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Porphyry ( / ˈ p ɔːr f ə r i / POR -fə-ree ) is any of various granites or igneous rocks with coarse-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate -rich, generally aphanitic matrix or groundmass . In its non-geologic, traditional use, the term porphyry usually refers to the purple-red form of this stone, valued for its appearance, but other colours of decorative porphyry are also used such as "green", "black" and "grey".

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105-479: The Beyeler Foundation or Fondation Beyeler , with its museum in Riehen , near Basel ( Switzerland ), owns and oversees the art collection of Hildy and Ernst Beyeler , which features modern and traditional art. The Beyeler Foundation museum includes a space for special exhibitions staged to complement the permanent collection. In 2006, approximately 340,000 persons visited the museum. The number of visitors in 2016

210-453: A contractor when necessary. The cultural property stored in museums is threatened in many countries by natural disaster , war , terrorist attacks or other emergencies. To this end, an internationally important aspect is a strong bundling of existing resources and the networking of existing specialist competencies in order to prevent any loss or damage to cultural property or to keep damage as low as possible. International partner for museums

315-471: A culture. As historian Steven Conn writes, "To see the thing itself, with one's own eyes and in a public place, surrounded by other people having some version of the same experience, can be enchanting." Museum purposes vary from institution to institution. Some favor education over conservation, or vice versa. For example, in the 1970s, the Canada Science and Technology Museum favored education over

420-718: A full-time director to whom authority is delegated for day-to-day operations; Have the financial resources sufficient to operate effectively; Demonstrate that it meets the Core Standards for Museums; Successfully complete the Core Documents Verification Program". Additionally, there is a legal definition of museum in United States legislation authorizing the establishment of the Institute of Museum and Library Services : "Museum means

525-427: A much wider range of objects than a library , and usually focus on a specific theme, such as the arts , science , natural history or local history . Public museums that host exhibitions and interactive demonstrations are often tourist attractions , and many attract large numbers of visitors from outside their host country, with the most visited museums in the world attracting millions of visitors annually. Since

630-459: A museum and on display, they not only got to show their fantastic finds but also used the museum as a way to sort and "manage the empirical explosion of materials that wider dissemination of ancient texts, increased travel, voyages of discovery, and more systematic forms of communication and exchange had produced". One of these naturalists and collectors was Ulisse Aldrovandi , whose collection policy of gathering as many objects and facts about them

735-598: A museum but also a small power plant in which its visitors were to regain strength. The building features a glazed façade largely looking out onto the corn fields and vines covering the Tüllinger Hills. The two perimeter walls of the original garden site inspired the idea of the museum’s layout. A red wall built with porphyry from Patagonia , South America replaced to the original in place before. The four 115-metre (377 ft) long porphyry walls running from north to south and standing 7 metres (23 ft) apart define

840-554: A museum is successful, as happened in Bilbao, others continue especially if a museum struggles to attract visitors. The Taubman Museum of Art is an example of an expensive museum (eventually $ 66 million) that attained little success and continues to have a low endowment for its size. Some museum activists see this method of museum use as a deeply flawed model for such institutions. Steven Conn, one such museum proponent, believes that "to ask museums to solve our political and economic problems

945-402: A museum's collection typically determines the museum's size, whereas its collection reflects the type of museum it is. Many museums normally display a "permanent collection" of important selected objects in its area of specialization, and may periodically display "special collections" on a temporary basis. The following is a list to give an idea of the major museum types. While comprehensive, it

1050-509: A notable person, or a given period of time. Museums also can be based on the main source of funding: central or federal government, provinces, regions, universities; towns and communities; other subsidised; nonsubsidised and private. It may sometimes be useful to distinguish between diachronic museums which interpret the way its subject matter has developed and evolved through time (e.g., Lower East Side Tenement Museum and Diachronic Museum of Larissa ), and synchronic museums which interpret

1155-508: A palace of Henry VIII , in England opened the council room to the general public to create an interactive environment for visitors. Rather than allowing visitors to handle 500-year-old objects, however, the museum created replicas, as well as replica costumes. The daily activities, historic clothing, and even temperature changes immerse the visitor in an impression of what Tudor life may have been. Major professional organizations from around

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1260-407: A public, tribal, or private nonprofit institution which is organized on a permanent basis for essentially educational, cultural heritage, or aesthetic purposes and which, using a professional staff: Owns or uses tangible objects, either animate or inanimate; Cares for these objects; and Exhibits them to the general public on a regular basis" (Museum Services Act 1976). One of the oldest museums known

1365-903: A series of standards and best practices that help guide the management of museums. Various positions within the museum carry out the policies established by the Board and the Director. All museum employees should work together toward the museum's institutional goal. Here is a list of positions commonly found at museums: Other positions commonly found at museums include: building operator, public programming staff, photographer , librarian , archivist , groundskeeper , volunteer coordinator, preparator, security staff, development officer, membership officer, business officer, gift shop manager, public relations staff, and graphic designer . At smaller museums, staff members often fulfill multiple roles. Some of these positions are excluded entirely or may be carried out by

1470-565: Is Ennigaldi-Nanna's museum , built by Princess Ennigaldi in modern Iraq at the end of the Neo-Babylonian Empire . The site dates from c.  530 BC , and contained artifacts from earlier Mesopotamian civilizations . Notably, a clay drum label—written in three languages—was found at the site, referencing the history and discovery of a museum item. Ancient Greeks and Romans collected and displayed art and objects but perceived museums differently from modern-day views. In

1575-773: Is UNESCO and Blue Shield International in accordance with the Hague Convention for the Protection of Cultural Property from 1954 and its 2nd Protocol from 1999. For legal reasons, there are many international collaborations between museums, and the local Blue Shield organizations. Blue Shield has conducted extensive missions to protect museums and cultural assets in armed conflict, such as 2011 in Egypt and Libya, 2013 in Syria and 2014 in Mali and Iraq. During these operations,

1680-554: Is believed to be one of the earliest museums in the world. While it connected to the Library of Alexandria it is not clear if the museum was in a different building from the library or was part of the library complex. While little was known about the museum it was an inspiration for museums during the early Renaissance period. The royal palaces also functioned as a kind of museum outfitted with art and objects from conquered territories and gifts from ambassadors from other kingdoms allowing

1785-448: Is no longer a main purpose of most museums. While there is an ongoing debate about the purposes of interpretation of a museum's collection, there has been a consistent mission to protect and preserve cultural artifacts for future generations. Much care, expertise, and expense is invested in preservation efforts to retard decomposition in ageing documents, artifacts, artworks, and buildings. All museums display objects that are important to

1890-404: Is not a definitive list. Private museums are organized by individuals and managed by a board and museum officers, but public museums are created and managed by federal, state, or local governments. A government can charter a museum through legislative action but the museum can still be private as it is not part of the government. The distinction regulates the ownership and legal accountability for

1995-438: Is not necessarily a negative development; Dorothy Canfield Fisher observed that the reduction in objects has pushed museums to grow from institutions that artlessly showcased their many artifacts (in the style of early cabinets of curiosity) to instead "thinning out" the objects presented "for a general view of any given subject or period, and to put the rest away in archive-storage-rooms, where they could be consulted by students,

2100-634: Is particularly true in the case of postindustrial cities. Examples of museums fulfilling these economic roles exist around the world. For example, the Guggenheim Museum Bilbao was built in Bilbao, Spain in a move by the Basque regional government to revitalize the dilapidated old port area of that city. The Basque government agreed to pay $ 100 million for the construction of the museum, a price tag that caused many Bilbaoans to protest against

2205-417: Is to set them up for inevitable failure and to set us (the visitor) up for inevitable disappointment." Museums are facing funding shortages. Funding for museums comes from four major categories, and as of 2009 the breakdown for the United States is as follows: Government support (at all levels) 24.4%, private (charitable) giving 36.5%, earned income 27.6%, and investment income 11.5%. Government funding from

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2310-520: The De Ceremoniis (mid-10th century), who specified them to be respectively of Constantine the Great , Constantius II , Julian , Jovian , Theodosius I , Arcadius , Aelia Eudoxia , Theodosius II , and Marcian . Of these, most still exist in complete or fragmentary form, despite depredations by later Byzantine Emperors, Crusaders , and Ottoman conquerors . Four presently adorn the facade of

2415-518: The Age of Enlightenment saw their ideas of the museum as superior and based their natural history museums on "organization and taxonomy" rather than displaying everything in any order after the style of Aldrovandi. The first "public" museums were often accessible only for the middle and upper classes. It could be difficult to gain entrance. When the British Museum opened to the public in 1759, it

2520-466: The American Alliance of Museums does not have such a definition, their list of accreditation criteria to participate in their Accreditation Program states a museum must: "Be a legally organized nonprofit institution or part of a nonprofit organization or government entity; Be essentially educational in nature; Have a formally stated and approved mission; Use and interpret objects or a site for

2625-657: The Ancient Greek Μουσεῖον ( mouseion ), which denotes a place or temple dedicated to the muses (the patron divinities in Greek mythology of the arts), and hence was a building set apart for study and the arts, especially the Musaeum (institute) for philosophy and research at Alexandria , built under Ptolemy I Soter about 280 BC. The purpose of modern museums is to collect, preserve, interpret, and display objects of artistic, cultural, or scientific significance for

2730-633: The Basilica of San Lorenzo , in Florence, Italy, for the de' Medici family . Purple porphyry was used lavishly throughout the opulent chapel as well, with a revetment of marbles, inlaid with other colored marbles and semi-precious stone, that covers the walls completely. Envisioned by Cosimo I, Grand Duke of Tuscany (1537–1574), it was initiated by Ferdinand I de' Medici , following a design by Matteo Nigetti that won an informal competition held in 1602 by Don Giovanni de' Medici (a son of Cosimo I), which

2835-651: The Monastery of Santes Creus near Tarragona , reuses a porphyry tub or alveus , which has been conjectured to be originally the sarcophagus of Late Roman Emperor Constans in his mausoleum at Centcelles , a nearby site with a well-preserved 4th-century rotunda . In twelfth- and thirteenth-century Sicily , another group of porphyry sarcophagi were produced from the reign of Roger II onward and used for Royal and then Imperial burials, namely those of King Roger II , King William I , Emperor Henry VI , Empress Constance , and Emperor Frederick II . They are all now in

2940-538: The National Endowment for the Arts , the largest museum funder in the United States, decreased by 19.586 million between 2011 and 2015, adjusted for inflation. The average spent per visitor in an art museum in 2016 was $ 8 between admissions, store and restaurant, where the average expense per visitor was $ 55. Corporations , which fall into the private giving category, can be a good source of funding to make up

3045-617: The Newark Museum in a series of books in the early 20th century so that other museum founders could plan their museums. Dana suggested that potential founders of museums should form a committee first, and reach out to the community for input as to what the museum should supply or do for the community. According to Dana, museums should be planned according to community's needs: "The new museum ... does not build on an educational superstition. It examines its community's life first, and then straightway bends its energies to supplying some

3150-596: The Palermo Cathedral , except William's in Monreale Cathedral . Scholar Rosa Bacile argues that they were carved by a local workshop from porphyry imported from Rome , the latter four plausibly (based on observation of their fluting ) all from a single column shaft that may have been taken from the Baths of Caracalla or the Baths of Diocletian . She notes that these Sicilian porphyry sarcophagi "are

3255-880: The QAPF diagram . Rhomb porphyry is found in continental rift areas, including the East African Rift (including Mount Kilimanjaro ), Mount Erebus near the Ross Sea in Antarctica , the Oslo graben in Norway , and south-central British Columbia . To the Romans it was known as Lapis porphyrites . Pliny the Elder 's Natural History (36, 11) affirmed that the "Imperial Porphyry" had been discovered in Egypt during

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3360-482: The Smithsonian Institution stated that he wanted to establish an institution "for the increase and diffusion of knowledge". In the late 19th century, museums of natural history exemplified the scientific drive for classifying life and interpreting the world. Their purpose was to gather examples from each field of knowledge for research and display. Concurrently, as American colleges expanded during

3465-629: The Titanic Belfast , built on disused shipyards in Belfast , Northern Ireland , incidentally for the same price as the Guggenheim Museum Bilbao and by the same architect, Frank Gehry , in time for the 100th anniversary of Titanic 's maiden voyage in 2012. Initially expecting modest visitor numbers of 425,000 annually, first year visitor numbers reached over 800,000, with almost 60% coming from outside Northern Ireland. In

3570-675: The United States Holocaust Memorial Museum in Washington, D.C. uses many artifacts in their memorable exhibitions. Museums are laid out in a specific way for a specific reason and each person who enters the doors of a museum will see its collection completely differently to the person behind them- this is what makes museums fascinating because they are represented differently to each individual. In recent years, some cities have turned to museums as an avenue for economic development or rejuvenation. This

3675-834: The interpretive plan for an exhibit, determining the most effective, engaging and appropriate methods of communicating a message or telling a story. The process will often mirror the architectural process or schedule, moving from conceptual plan, through schematic design, design development, contract document, fabrication, and installation. Museums of all sizes may also contract the outside services of exhibit fabrication businesses. Some museum scholars have even begun to question whether museums truly need artifacts at all. Historian Steven Conn provocatively asks this question, suggesting that there are fewer objects in all museums now, as they have been progressively replaced by interactive technology. As educational programming has grown in museums, mass collections of objects have receded in importance. This

3780-628: The "Porphyra", the official delivery room for use of pregnant Empresses in the Great Palace of Constantinople , giving rise to the phrase "born in the purple". Choosing porphyry as a material was a bold and specific statement for late Imperial Rome. As if it were not enough that porphyry was explicitly for imperial use, the stone's rarity set the emperors apart from their subjects as their superiors. The comparative vividness of porphyry to other stones underscored that these figures were not regular citizens, but many levels above, even gods, and worthy of

3885-499: The 1860s. The British Museum was described by one of their delegates as a 'hakubutsukan', a 'house of extensive things' – this would eventually become accepted as the equivalent word for 'museum' in Japan and China. American museums eventually joined European museums as the world's leading centers for the production of new knowledge in their fields of interest. A period of intense museum building, in both an intellectual and physical sense

3990-520: The 19th century, they also developed their own natural history collections to support the education of their students. By the last quarter of the 19th century, scientific research in universities was shifting toward biological research on a cellular level, and cutting-edge research moved from museums to university laboratories. While many large museums, such as the Smithsonian Institution, are still respected as research centers, research

4095-742: The Beyeler Foundation in 1982 and commissioned Renzo Piano to design a museum to house their private collection. The collection was first publicly exhibited in its entirety at the Centro de Arte Reina Sofía in Madrid in 1989, and was subsequently shown at Neue Nationalgalerie in Berlin in 1993 and the Art Gallery of New South Wales in Sydney in 1997. In September 1994 the groundbreaking of

4200-665: The British Museum for its possession of rare antiquities from Egypt, Greece, and the Middle East. The roles associated with the management of a museum largely depend on the size of the institution. Together, the Board and the Director establish a system of governance that is guided by policies that set standards for the institution. Documents that set these standards include an institutional or strategic plan, institutional code of ethics, bylaws, and collections policy. The American Alliance of Museums (AAM) has also formulated

4305-697: The United States, several Native American tribes and advocacy groups have lobbied extensively for the repatriation of sacred objects and the reburial of human remains. In 1990, Congress passed the Native American Graves Protection and Repatriation Act (NAGPRA), which required federal agencies and federally funded institutions to repatriate Native American "cultural items" to culturally affiliate tribes and groups. Similarly, many European museum collections often contain objects and cultural artifacts acquired through imperialism and colonization . Some historians and scholars have criticized

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4410-543: The United States, similar projects include the 81,000 square foot Taubman Museum of Art in Roanoke, Virginia and The Broad in Los Angeles . Museums being used as a cultural economic driver by city and local governments has proven to be controversial among museum activists and local populations alike. Public protests have occurred in numerous cities which have tried to employ museums in this way. While most subside if

4515-459: The altars and vases and fountain basins reused in the Renaissance and dispersed as far as Kyiv . The Romans also used "Green Porphyry" ( lapis Lacedaemonius , from Greece, also known today as Serpentine ), and "Black Porphyry" from the same Egyptian quarry. After the fifth century the quarry was lost to sight for many centuries. Byzantium scholar Alexander Vasiliev suggested this was

4620-586: The care of the collections. Porphyry (geology) The term porphyry is from the Ancient Greek πορφύρα ( porphyra ), meaning " purple ". Purple was the colour of royalty, and the Roman "imperial porphyry" was a deep purple igneous rock with large crystals of plagioclase . Some authors claimed the rock was the hardest known in antiquity. Thus porphyry was prized for monuments and building projects in Imperial Rome and thereafter. Subsequently,

4725-431: The chosen artifacts. These elements of planning have their roots with John Cotton Dana, who was perturbed at the historical placement of museums outside of cities, and in areas that were not easily accessed by the public, in gloomy European style buildings. Questions of accessibility continue to the present day. Many museums strive to make their buildings, programming, ideas, and collections more publicly accessible than in

4830-404: The classical period, the museums were the temples and their precincts which housed collections of votive offerings. Paintings and sculptures were displayed in gardens, forums, theaters, and bathhouses. In the ancient past there was little differentiation between libraries and museums with both occupying the building and were frequently connected to a temple or royal palace. The Museum of Alexandria

4935-923: The consequence of the Council of Chalcedon in 451 and the subsequent troubles in Egypt . The scientific members of the French Expedition under Napoleon sought it in vain, and it was only when the Eastern Desert was reopened for study under Muhammad Ali that the site was rediscovered by the English Egyptologists James Burton and John Gardner Wilkinson in 1823. Porphyry was extensively used in Byzantine imperial monuments, for example in Hagia Sophia and in

5040-539: The development of more modern 19th-century museums was part of new strategies by Western governments to produce a citizenry that, rather than be directed by coercive or external forces, monitored and regulated its own conduct. To incorporate the masses in this strategy, the private space of museums that previously had been restricted and socially exclusive were made public. As such, objects and artifacts, particularly those related to high culture, became instruments for these "new tasks of social management". Universities became

5145-413: The establishment of the earliest known museum in ancient times , museums have been associated with academia and the preservation of rare items. Museums originated as private collections of interesting items, and not until much later did the emphasis on educating the public take root. The English word museum comes from Latin , and is pluralized as museums (or rarely, musea ). It is originally from

5250-640: The eye, as in granite . Most igneous rocks have some degree of porphyritic texture. This is because most magma from which igneous rock solidifies is produced by partial melting of a mixture of different minerals. At first the mixed melt slowly cools deep in the crust. The magma begins crystallizing, the highest melting point minerals closest to the overall composition first, in a process called fractional crystallization . This forms phenocrysts , which usually have plenty of room for growth, and form large, well-shaped crystals with characteristic crystal faces ( euhedral crystals). If they are different in density to

5355-409: The former use and status of an object. Religious or holy objects, for instance, are handled according to cultural rules. Jewish objects that contain the name of God may not be discarded, but need to be buried. Although most museums do not allow physical contact with the associated artifacts, there are some that are interactive and encourage a more hands-on approach. In 2009, Hampton Court Palace ,

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5460-697: The funding gap. The amount corporations currently give to museums accounts for just 5% of total funding. Corporate giving to the arts, however, was set to increase by 3.3% in 2017. Most mid-size and large museums employ exhibit design staff for graphic and environmental design projects, including exhibitions. In addition to traditional 2-D and 3-D designers and architects, these staff departments may include audio-visual specialists, software designers, audience research, evaluation specialists, writers, editors, and preparators or art handlers. These staff specialists may also be charged with supervising contract design or production services. The exhibit design process builds on

5565-422: The looting of the collection is to be prevented in particular. The design of museums has evolved throughout history. However, museum planning involves planning the actual mission of the museum along with planning the space that the collection of the museum will be housed in. Intentional museum planning has its beginnings with the museum founder and librarian John Cotton Dana . Dana detailed the process of founding

5670-441: The main building of the İstanbul Archaeology Museums , including one whose rounded shape led Alexander Vasiliev to suggest attribution to Emperor Julian on the basis of Constantine Porphyrogenitus's description. Vasiliev conjectures that the nine imperial sarcophagi, including one which carries a crux ansata or Egyptian cross , were carved in Egypt before shipment to Constantinople. The imperial porphyry sarcophagi tradition

5775-407: The material which that community needs, and to making that material's presence widely known, and to presenting it in such a way as to secure it for the maximum of use and the maximum efficiency of that use." The way that museums are planned and designed vary according to what collections they house, but overall, they adhere to planning a space that is easily accessed by the public and easily displays

5880-409: The museum landscape has become so varied, that it may not be sufficient to use traditional categories to comprehend fully the vast variety existing throughout the world. However, it may be useful to categorize museums in different ways under multiple perspectives. Museums can vary based on size, from large institutions, to very small institutions focusing on specific subjects, such as a specific location,

5985-617: The museum planning process. Some museum experiences have very few or no artifacts and do not necessarily call themselves museums, and their mission reflects this; the Griffith Observatory in Los Angeles and the National Constitution Center in Philadelphia , being notable examples where there are few artifacts, but strong, memorable stories are told or information is interpreted. In contrast,

6090-402: The museum took place. The inauguration was scheduled for 1996, but postponed until 1997 due to delays in the construction. In October 1997, the Beyeler Foundation made its collection accessible to the public. The Beyeler Foundation opened its doors on 18 October 1997, presenting 140 works of modern classics, including 23 Picassos. The overall collection of 200 works of classic modernism reflect

6195-458: The museum, including by Jean Dubuffet , Jean-Michel Basquiat , Sam Francis , and Sigmar Polke ; the trove was first exhibited at the museum in 2014. The garden surrounding the museum also periodically serves as a venue for special exhibitions. In a work called "Wrapped Trees", Christo and Jeanne-Claude veiled 178 trees in the park around the Beyeler Foundation and in the adjacent Berower Park between 13 November and 14 December 1998. Recently,

6300-491: The name was given to any igneous rocks with large crystals. The adjective porphyritic now refers to a certain texture of igneous rock regardless of its chemical and mineralogical composition or its color. Its chief characteristic is a large difference in size between the tiny matrix crystals and the much larger phenocrysts. Porphyries may be aphanites or phanerites , that is, the groundmass may have microscopic crystals as in basalt , or crystals easily distinguishable with

6405-525: The only people who really needed to see them". This phenomenon of disappearing objects is especially present in science museums like the Museum of Science and Industry in Chicago , which have a high visitorship of school-aged children who may benefit more from hands-on interactive technology than reading a label beside an artifact. There is no definitive standard as to the set types of museums. Additionally,

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6510-415: The past. Not every museum is participating in this trend, but that seems to be the trajectory of museums in the twenty-first century with its emphasis on inclusiveness. One pioneering way museums are attempting to make their collections more accessible is with open storage. Most of a museum's collection is typically locked away in a secure location to be preserved, but the result is most people never get to see

6615-565: The permanent collection. The culmination of Beyeler's career came in 2007 when all the works that passed through his hands were reunited at the museum for a grand exhibition that included van Gogh's 1889 Portrait of Postman Roulin , Lichtenstein's Plus and Minus III and a huge expressive drip painting by Jackson Pollock . The collection is expanding, particularly in terms of works made after 1950 (recent acquisitions include pieces by Louise Bourgeois and Wolfgang Tillmans ). In 2013, French art collector Micheline Renard donated several artworks to

6720-686: The permanent collections are rarely open to the public and the visitors can only visit temporary exhibitions featuring a specific artist. According to a design of the Italian architect Renzo Piano the construction of the museum began in September 1994 in the Berower Park in Riehen. The museum was meant to be embedded in the English landscape garden in the park and according to Beyeler, not only be

6825-570: The personal collection of Elias Ashmole , was set up in the University of Oxford to be open to the public and is considered by some to be the first modern public museum. The collection included that of Elias Ashmole which he had collected himself, including objects he had acquired from the gardeners, travellers and collectors John Tradescant the elder and his son of the same name . The collection included antique coins, books, engravings, geological specimens, and zoological specimens—one of which

6930-461: The phenocrysts, as they crowd each other out. The significance of porphyritic texture as an indication that magma forms through different stages of cooling was first recognized by the Canadian geologist, Norman L. Bowen , in 1928. Porphyritic texture is particularly common in andesite , with the most prominent phenocrysts typically composed of plagioclase feldspar . Plagioclase has almost

7035-431: The phenocrysts. The crystallization of the phenocrysts during fractional crystallization changes the composition of the remaining liquid magma, moving it closer to the eutectic point , with a mixed composition of minerals. As the temperature continues to decrease, this point is reached, and the rock is entirely solidified. The simultaneous crystallization of the remaining minerals produces the finer-grained matrix surrounding

7140-408: The plan of the building. Resting on top of the solid foundation walls, the lightweight glass roof, white enamelled on the reverse, admits northern light but screens off light from the east and the west. Along the northern and the southern sides the roof projects far beyond the walls, shading the glass façades from the sun. In 1999, less than two years after the opening of the museum edifice, the building

7245-685: The preservation of their objects. They displayed objects as well as their functions. One exhibit featured a historical printing press that a staff member used for visitors to create museum memorabilia. Some museums seek to reach a wide audience, such as a national or state museum, while others have specific audiences, like the LDS Church History Museum or local history organizations. Generally speaking, museums collect objects of significance that comply with their mission statement for conservation and display. Apart from questions of provenance and conservation, museums take into consideration

7350-422: The primary centers for innovative research in the United States well before the start of World War II . Nevertheless, museums to this day contribute new knowledge to their fields and continue to build collections that are useful for both research and display. The late twentieth century witnessed intense debate concerning the repatriation of religious, ethnic, and cultural artifacts housed in museum collections. In

7455-442: The private collections of wealthy individuals, families or institutions of art and rare or curious natural objects and artifacts . These were often displayed in so-called "wonder rooms" or cabinets of curiosities . These contemporary museums first emerged in western Europe, then spread into other parts of the world. Public access to these museums was often possible for the "respectable", especially to private art collections, but at

7560-400: The project. Nonetheless, over 1.1 million people visited the museum in 2015, indicating it appeared to have paid off for the local government despite local backlash; key to this is the large demographic of foreign visitors to the museum, with 63% of the visitors residing outside of Spain and thus feeding foreign investment straight into Bilbao. A similar project to that undertaken in Bilbao was

7665-484: The public presentation of regularly scheduled programs and exhibits; Have a formal and appropriate program of documentation, care, and use of collections or objects; Carry out the above functions primarily at a physical facility or site; Have been open to the public for at least two years; Be open to the public at least 1,000 hours a year; Have accessioned 80 percent of its permanent collection; Have at least one paid professional staff with museum knowledge and experience; Have

7770-407: The public, accessible and inclusive, museums foster diversity and sustainability. They operate and communicate ethically, professionally and with the participation of communities, offering varied experiences for education, enjoyment, reflection and knowledge sharing." The Canadian Museums Association 's definition: "A museum is a non-profit, permanent establishment, that does not exist primarily for

7875-708: The purpose of conducting temporary exhibitions and that is open to the public during regular hours and administered in the public interest for the purpose of conserving, preserving, studying, interpreting, assembling and exhibiting to the public for the instruction and enjoyment of the public, objects and specimens or educational and cultural value including artistic, scientific, historical and technological material." The United Kingdom's Museums Association 's definition: "Museums enable people to explore collections for inspiration, learning and enjoyment. They are institutions that collect, safeguard and make accessible artifacts and specimens, which they hold in trust for society." While

7980-734: The reign of Tiberius; an inscription recently discovered and dated from AD 18 mentions the Roman Caius Cominius Leugas as the finder of this new quarry. Ancient Egyptians used other decorative porphyritic stones of a very close composition and appearance, but apparently remained unaware of the presence of the Roman grade although it was located in their own country. It was also sometimes used in Minoan art , and as early as 1850 BC on Crete in Minoan Knossos there were large column bases made of porphyry. It

8085-499: The remaining melt, these phenocrysts usually settle out of solution, eventually creating cumulates ; however if the partially crystallized magma is then erupted to the surface as a lava, the remainder of the melt is quickly cooled around the phenocrysts and crystallizes much more rapidly to form a very fine-grained or glassy matrix. Porphyry can also form even from magma that completely solidifies while still underground. The groundmass will be visibly crystalline, though not as large as

8190-429: The respect they expected. Porphyry made the emperors unapproachable in terms of power and nature, belonging to another world, the world of the mighty gods, present for a short time on earth. Porphyry also stood in for the physical purple robes Roman emperors wore to show status, because of its purple colouring. Similar to porphyry, purple fabric was extremely difficult to make, as what we now call Tyrian purple required

8295-578: The ruler to display the amassed collections to guests and to visiting dignitaries. Also in Alexandria from the time of Ptolemy II Philadelphus (r. 285–246 BCE), was the first zoological park. At first used by Philadelphus in an attempt to domesticate African elephants for use in war, the elephants were also used for show along with a menagerie of other animals specimens including hartebeests , ostriches , zebras , leopards , giraffes , rhinoceros , and pythons . Early museums began as

8400-419: The same density as basaltic magma, so plagioclase phenocrysts are likely to remain suspended in the magma rather than settling out. Rhomb porphyry is a volcanic rock with gray-white large porphyritic rhombus -shaped phenocrysts of feldspar (commonly anorthoclase ) embedded in a very fine-grained red-brown matrix . The composition of rhomb porphyry places it in the trachyte – latite classification of

8505-461: The study and education of the public. To city leaders, an active museum community can be seen as a gauge of the cultural or economic health of a city, and a way to increase the sophistication of its inhabitants. To museum professionals, a museum might be seen as a way to educate the public about the museum's mission, such as civil rights or environmentalism . Museums are, above all, storehouses of knowledge. In 1829, James Smithson's bequest funding

8610-451: The subject matter which now include content in the form of images, audio and visual effects, and interactive exhibits. Museum creation begins with a museum plan, created through a museum planning process. The process involves identifying the museum's vision and the resources, organization and experiences needed to realize this vision. A feasibility study, analysis of comparable facilities, and an interpretive plan are all developed as part of

8715-494: The type of collections they display, to include: fine arts , applied arts , craft , archaeology , anthropology and ethnology , biography , history , cultural history , science , technology , children's museums , natural history , botanical and zoological gardens . Within these categories, many museums specialize further, e.g., museums of modern art , folk art , local history , military history , aviation history , philately , agriculture , or geology . The size of

8820-442: The use of rare sea snails to make the dye. The colour itself reminded the public how to behave in the presence of the emperors, with respect bordering on worship for the self-proclaimed god-kings. A uniquely prestigious use of porphyry was its choice as material for imperial sarcophagi in the 4th and early 5th centuries. That tradition appears to have been started with Diocletian 's porphyry sarcophagus in his mausoleum , which

8925-471: The vast majority of collections. The Brooklyn Museum's Luce Center for American Art practices this open storage where the public can view items not on display, albeit with minimal interpretation. The practice of open storage is all part of an ongoing debate in the museum field of the role objects play and how accessible they should be. In terms of modern museums, interpretive museums, as opposed to art museums, have missions reflecting curatorial guidance through

9030-528: The very first examples of medieval free-standing secular tombs in the West, and therefore play a unique role within the history of Italian sepulchral art (earlier and later tombs are adjacent to, and dependent on walls)." Six grand porphyry sarcophagi are featured along the walls of the octagonal Cappella dei Principi (Chapel of the Princes) that was built as one of two chapels in the architectural complex of

9135-426: The views of Hildy and Ernst Beyeler on 20th-century art and highlight features typical of the period from Claude Monet , Paul Cézanne and Vincent van Gogh to Pablo Picasso , Andy Warhol , Roy Lichtenstein and Francis Bacon . The paintings appear alongside some 25 objects of tribal art from Africa , Oceania and Alaska . A third of the exhibition space is reserved for special exhibitions staged to complement

9240-766: The way its subject matter existed at a certain point in time (e.g., the Anne Frank House and Colonial Williamsburg ). According to University of Florida Professor Eric Kilgerman, "While a museum in which a particular narrative unfolds within its halls is diachronic, those museums that limit their space to a single experience are called synchronic." In her book Civilizing the Museum , author Elaine Heumann Gurian proposes that there are five categories of museums based on intention and not content: object centered, narrative, client centered, community centered, and national. Museums can also be categorized into major groups by

9345-428: The whim of the owner and his staff. One way that elite men during this time period gained a higher social status in the world of elites was by becoming a collector of these curious objects and displaying them. Many of the items in these collections were new discoveries and these collectors or naturalists, since many of these people held interest in natural sciences, were eager to obtain them. By putting their collections in

9450-475: The world offer some definitions as to what constitutes a museum, and their purpose. Common themes in all the definitions are public good and the care, preservation, and interpretation of collections. The International Council of Museums ' current definition of a museum (adopted in 2022): "A museum is a not-for-profit, permanent institution in the service of society that researches, collects, conserves, interprets and exhibits tangible and intangible heritage. Open to

9555-488: Was "encyclopedic" in nature, reminiscent of that of Pliny, the Roman philosopher and naturalist. The idea was to consume and collect as much knowledge as possible, to put everything they collected and everything they knew in these displays. In time, however, museum philosophy would change and the encyclopedic nature of information that was so enjoyed by Aldrovandi and his cohorts would be dismissed as well as "the museums that contained this knowledge". The 18th-century scholars of

9660-493: Was 332,000. The Beyeler Foundation is the most visited museum of art in all of Switzerland. The museum is properly funded, and it receives annual grants from the cantons of Basel City and Basel County and the commune of Riehen. Major partners of the Foundation are Bayer AG, Novartis and Swiss bank UBS . Art dealers Ernst Beyeler (16 July 1921 – 25 February 2010) and Hilda Kunz (1922 – 18 July 2008), known as Hildy, created

9765-435: Was a concern that large crowds could damage the artifacts. Prospective visitors to the British Museum had to apply in writing for admission, and small groups were allowed into the galleries each day. The British Museum became increasingly popular during the 19th century, amongst all age groups and social classes who visited the British Museum, especially on public holidays. The Ashmolean Museum , however, founded in 1677 from

9870-544: Was altered somewhat during execution by Buontalenti . The tomb of Napoleon at Les Invalides in Paris , designed by architect Louis Visconti , is centered on the deceased emperor's sarcophagus that often has been described as made of red porphyry although this is incorrect. Napoleon's sarcophagus is made of quartzite , however, its pedestal is made of green andesite porphyry from Vosges . The sarcophagus of Arthur Wellesley, 1st Duke of Wellington at St Paul's Cathedral

9975-663: Was called "Imperial" as the mines, as elsewhere in the empire, were owned by the emperor. The red porphyry all came from the Gabal Abu Dukhan quarry (or Mons Porphyrites ) in the Eastern Desert of Egypt , from 600 million-year-old andesite of the Arabian-Nubian Shield . The road from the quarry westward to Qena (Roman Maximianopolis) on the Nile, which Ptolemy put on his second-century map,

10080-496: Was charged with organizing the Louvre as a national public museum and the centerpiece of a planned national museum system. As Napoléon I conquered the great cities of Europe, confiscating art objects as he went, the collections grew and the organizational task became more and more complicated. After Napoleon was defeated in 1815, many of the treasures he had amassed were gradually returned to their owners (and many were not). His plan

10185-401: Was completed in 1858. and was made from a single piece of Cornish porphyry, of a type called luxullianite , which was found in a field near Lostwithiel . In countries where many automobiles have studded winter tires such as Sweden, Finland, and Norway, it is common that highways are paved with asphalt made of porphyry aggregate to make the wearing course withstand the extreme wear from

10290-879: Was destroyed when the building was repurposed as a church but of which probable fragments are at the Archaeological Museum in Split, Croatia . The oldest and best-preserved ones are now conserved at the Vatican Museums and known as the Sarcophagi of Helena and Constantina . Nine other imperial porphyry sarcophagi were long held in the Church of the Holy Apostles in Constantinople . They were described by Constantine VII Porphyrogenitus in

10395-580: Was emulated by Ostrogothic King Theodoric the Great (454-526), whose mausoleum in Ravenna still contains a porphyry tub that was used as his sarcophagus. Similarly Charles the Bald , King of West Francia and Roman Emperor , was buried at Saint-Denis in a porphyry tub which may be the same one known as " Dagobert 's tub" ( cuve de Dagobert ), now in the Louvre . The tomb of Peter III of Aragon , in

10500-743: Was first described by Strabo , and it is to this day known as the Via Porphyrites , the Porphyry Road, its track marked by the hydreumata , or watering wells that made it viable in this utterly dry landscape. It was used for all the red porphyry columns in Rome, the togas on busts of emperors , the panels in the revetment of the Pantheon , the Column of Constantine in Istanbul as well as

10605-650: Was lengthened by 12 metres (39 ft), which increased total exhibition space by 458 square metres (4,930 sq ft) to its present (as of April 2020) 3,764 square metres (40,520 sq ft). Situated vis-à-vis the museum building, the late-Baroque Villa Berower houses the museum's administration department and a restaurant. Museum A museum is an institution dedicated to displaying and/or preserving culturally or scientifically significant objects. Many museums have exhibitions of these objects on public display, and some have private collections that are used by researchers and specialists. Museums host

10710-764: Was never fully realized, but his concept of a museum as an agent of nationalistic fervor had a profound influence throughout Europe. Chinese and Japanese visitors to Europe were fascinated by the museums they saw there, but had cultural difficulties in grasping their purpose and finding an equivalent Chinese or Japanese term for them. Chinese visitors in the early 19th century named these museums based on what they contained, so defined them as "bone amassing buildings" or "courtyards of treasures" or "painting pavilions" or "curio stores" or "halls of military feats" or "gardens of everything". Japan first encountered Western museum institutions when it participated in Europe's World's Fairs in

10815-649: Was realized in the late 19th and early 20th centuries (this is often called "The Museum Period" or "The Museum Age"). While many American museums, both natural history museums and art museums alike, were founded with the intention of focusing on the scientific discoveries and artistic developments in North America, many moved to emulate their European counterparts in certain ways (including the development of Classical collections from ancient Egypt , Greece , Mesopotamia , and Rome ). Drawing on Michel Foucault 's concept of liberal government, Tony Bennett has suggested

10920-704: Was the Louvre in Paris , opened in 1793 during the French Revolution , which enabled for the first time free access to the former French royal collections for people of all stations and status. The fabulous art treasures collected by the French monarchy over centuries were accessible to the public three days each " décade " (the 10-day unit which had replaced the week in the French Republican Calendar ). The Conservatoire du muséum national des Arts (National Museum of Arts's Conservatory)

11025-480: Was the stuffed body of the last dodo ever seen in Europe; but by 1755 the stuffed dodo was so moth-eaten that it was destroyed, except for its head and one claw. The museum opened on 24 May 1683, with naturalist Robert Plot as the first keeper. The first building, which became known as the Old Ashmolean , is sometimes attributed to Sir Christopher Wren or Thomas Wood. In France, the first public museum

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