94-962: Vučedol culture , Nagyrév culture , Ottomány culture , Wietenberg culture , Vatya culture Bell Beaker culture , Únětice culture , Nordic Bronze Age , Tumulus culture , Urnfield culture Bronze Age Britain , Bronze Age France , Armorican Tumulus culture , Bronze Age Iberia , Argaric culture , Hilversum culture , Atlantic Bronze Age Nuragic civilization , Polada culture , Terramare culture , Proto-Villanovan culture , Apennine culture , Canegrate culture , Golasecca culture Pontic Steppe Caucasus East Asia Eastern Europe Northern Europe Pontic Steppe Northern/Eastern Steppe Europe South Asia Steppe Europe Caucasus India Indo-Aryans Iranians East Asia Europe East Asia Europe Indo-Aryan Iranian Indo-Aryan Iranian Others European The Bell Beaker culture , also known as
188-579: A Gilman reagent . These can undergo substitution with alkyl halides to form coupling products ; as such, they are important in the field of organic synthesis . Copper(I) acetylide is highly shock-sensitive but is an intermediate in reactions such as the Cadiot–Chodkiewicz coupling and the Sonogashira coupling . Conjugate addition to enones and carbocupration of alkynes can also be achieved with organocopper compounds. Copper(I) forms
282-696: A covalent character and are relatively weak. This observation explains the low hardness and high ductility of single crystals of copper. At the macroscopic scale, introduction of extended defects to the crystal lattice , such as grain boundaries, hinders flow of the material under applied stress, thereby increasing its hardness. For this reason, copper is usually supplied in a fine-grained polycrystalline form, which has greater strength than monocrystalline forms. The softness of copper partly explains its high electrical conductivity ( 59.6 × 10 S /m ) and high thermal conductivity, second highest (second only to silver) among pure metals at room temperature. This
376-643: A nickel ) consists of 75% copper and 25% nickel in homogeneous composition. Prior to the introduction of cupronickel, which was widely adopted by countries in the latter half of the 20th century, alloys of copper and silver were also used, with the United States using an alloy of 90% silver and 10% copper until 1965, when circulating silver was removed from all coins with the exception of the half dollar—these were debased to an alloy of 40% silver and 60% copper between 1965 and 1970. The alloy of 90% copper and 10% nickel, remarkable for its resistance to corrosion,
470-407: A pinkish-orange color . Copper is used as a conductor of heat and electricity, as a building material , and as a constituent of various metal alloys , such as sterling silver used in jewelry , cupronickel used to make marine hardware and coins , and constantan used in strain gauges and thermocouples for temperature measurement. Copper is one of the few metals that can occur in nature in
564-425: A spin of 3 ⁄ 2 . The other isotopes are radioactive , with the most stable being Cu with a half-life of 61.83 hours. Seven metastable isomers have been characterized; Cu is the longest-lived with a half-life of 3.8 minutes. Isotopes with a mass number above 64 decay by β , whereas those with a mass number below 64 decay by β . Cu , which has
658-418: A 'package' of knowledge (including religious beliefs, as well as methods of copper , bronze , and gold working) and artefacts (including copper daggers, v-perforated buttons, and stone wrist-guards ) adopted and adapted by the indigenous peoples of Europe to varying degrees. This new knowledge may have come about by any combination of population movements and cultural contact. An example might be as part of
752-530: A base for the stratigraphic structure of the whole culture. No final conclusions about the linguistic character of Vučedol can be made, such as the inference that its people were linguistically Indo-European, or to what extent they mixed with native European populations, in regions of the eastern Adriatic coast, Dalmatia and Herzegovina with some parts of Bosnia as well. A February 2018 study published in Nature included an analysis of three individuals ascribed to
846-399: A blast furnace. A potential source of copper is polymetallic nodules, which have an estimated concentration 1.3%. Like aluminium , copper is recyclable without any loss of quality, both from raw state and from manufactured products. In volume, copper is the third most recycled metal after iron and aluminium. An estimated 80% of all copper ever mined is still in use today. According to
940-464: A blue crystalline penta hydrate , the most familiar copper compound in the laboratory. It is used in a fungicide called the Bordeaux mixture . Polyols , compounds containing more than one alcohol functional group , generally interact with cupric salts. For example, copper salts are used to test for reducing sugars . Specifically, using Benedict's reagent and Fehling's solution the presence of
1034-656: A coherent archaeological culture in its later phase. The origin of the "Bell Beaker" artefacts has been traced to the early 3rd millennium, with early examples of the "maritime" Bell Beaker design having been found at the Tagus estuary in Portugal, radiocarbon dated to c. 28th century BC. The inspiration for the Maritime Bell Beaker is argued to have been the small and earlier Copoz beakers that have impressed decoration and which are found widely around
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#17327657760071128-709: A directly usable metallic form ( native metals ). This led to very early human use in several regions, from c. 8000 BC . Thousands of years later, it was the first metal to be smelted from sulfide ores, c. 5000 BC ; the first metal to be cast into a shape in a mold, c. 4000 BC ; and the first metal to be purposely alloyed with another metal, tin , to create bronze , c. 3500 BC . Commonly encountered compounds are copper(II) salts, which often impart blue or green colors to such minerals as azurite , malachite , and turquoise , and have been used widely and historically as pigments. Copper used in buildings, usually for roofing, oxidizes to form
1222-450: A dominant hunter-warrior class is a preview of the changes that will be characteristic for the east and middle European early Bronze Age. Compared to earlier and contemporary cultures the Vučedol culture exploited a diversity in food sources: the Vučedol people were hunters, fishermen and agrarians, with some strong indications that they cultivated certain domesticated animals. Thus the culture
1316-586: A drop of molten copper . Some researchers of the Vučedol culture have claimed that there was regular trade between the territory of the Vučedol culture and the Helladic culture to the south. Cultural elements found of the B2 phase of the Vučedol culture appear to have originated in the first phase of the middle Bronze Age of the Helladic culture of mainland Greece. The excavated settlement of Vučedol provides
1410-457: A green patina of compounds called verdigris . Copper is sometimes used in decorative art , both in its elemental metal form and in compounds as pigments. Copper compounds are used as bacteriostatic agents , fungicides , and wood preservatives . Copper is essential to all living organisms as a trace dietary mineral because it is a key constituent of the respiratory enzyme complex cytochrome c oxidase . In molluscs and crustaceans , copper
1504-505: A half-life of 12.7 hours, decays both ways. Cu and Cu have significant applications. Cu is used in Cu Cu-PTSM as a radioactive tracer for positron emission tomography . Copper is produced in massive stars and is present in the Earth's crust in a proportion of about 50 parts per million (ppm). In nature, copper occurs in
1598-491: A kind of Bell Beaker civilization of continental scale". The Bell Beaker artefacts (at least in their early phase) are not distributed across a contiguous area, as is usual for archaeological cultures, but are found in insular concentrations scattered across Europe. Their presence is not associated with a characteristic type of architecture or of burial customs. However, the Bell Beaker culture does appear to coalesce into
1692-687: A layer of brown-black copper oxide which, unlike the rust that forms on iron in moist air, protects the underlying metal from further corrosion ( passivation ). A green layer of verdigris (copper carbonate) can often be seen on old copper structures, such as the roofing of many older buildings and the Statue of Liberty . Copper tarnishes when exposed to some sulfur compounds, with which it reacts to form various copper sulfides . There are 29 isotopes of copper. Cu and Cu are stable, with Cu comprising approximately 69% of naturally occurring copper; both have
1786-532: A natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air. This is due to the low plasma frequency of the metal, which lies in the red part of the visible spectrum, causing it to absorb the higher-frequency green and blue colors. As with other metals, if copper is put in contact with another metal in the presence of an electrolyte , galvanic corrosion will occur. Copper does not react with water, but it does slowly react with atmospheric oxygen to form
1880-645: A period of cultural contact in Atlantic and Western Europe following a prolonged period of relative isolation during the Neolithic . In its mature phase, the Bell Beaker culture is understood as not only a collection of characteristic artefact types, but a complex cultural phenomenon involving metalwork in copper , arsenical bronze and gold , long-distance exchange networks, archery , specific types of ornamentation, and (presumably) shared ideological, cultural and religious ideas, as well as social stratification and
1974-670: A prestige cult related to the production and consumption of beer, or trading links such as those demonstrated by finds made along the seaways of Atlantic Europe. Palynological studies including analysis of pollen, associated with the spread of beakers, certainly suggests increased growing of barley, which may be associated with beer brewing. Noting the distribution of Beakers was highest in areas of transport routes, including fording sites, river valleys and mountain passes, Beaker 'folk' were suggested to be originally bronze traders, who subsequently settled within local Neolithic or early Chalcolithic cultures, creating local styles. Close analysis of
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#17327657760072068-407: A red-brown precipitate with copper(II) salts. Compounds that contain a carbon-copper bond are known as organocopper compounds. They are very reactive towards oxygen to form copper(I) oxide and have many uses in chemistry . They are synthesized by treating copper(I) compounds with Grignard reagents , terminal alkynes or organolithium reagents ; in particular, the last reaction described produces
2162-451: A rich variety of compounds, usually with oxidation states +1 and +2, which are often called cuprous and cupric , respectively. Copper compounds promote or catalyse numerous chemical and biological processes. As with other elements, the simplest compounds of copper are binary compounds, i.e. those containing only two elements, the principal examples being oxides, sulfides, and halides . Both cuprous and cupric oxides are known. Among
2256-520: A study from 2018 found that it was associated with genetically diverse populations. The Bell Beaker culture was partly preceded by and contemporaneous with the Corded Ware culture , and in north-central Europe preceded by the Funnelbeaker culture . The name Glockenbecher was coined for its distinctive style of beakers by Paul Reinecke in 1900. The term's English translation Bell Beaker
2350-424: A variety of minerals, including native copper , copper sulfides such as chalcopyrite , bornite , digenite , covellite , and chalcocite , copper sulfosalts such as tetrahedite-tennantite , and enargite , copper carbonates such as azurite and malachite , and as copper(I) or copper(II) oxides such as cuprite and tenorite , respectively. The largest mass of elemental copper discovered weighed 420 tonnes and
2444-436: A variety of weak complexes with alkenes and carbon monoxide , especially in the presence of amine ligands. Copper(III) is most often found in oxides. A simple example is potassium cuprate , KCuO 2 , a blue-black solid. The most extensively studied copper(III) compounds are the cuprate superconductors . Yttrium barium copper oxide (YBa 2 Cu 3 O 7 ) consists of both Cu(II) and Cu(III) centres. Like oxide, fluoride
2538-583: Is a constituent of the blood pigment hemocyanin , replaced by the iron-complexed hemoglobin in fish and other vertebrates . In humans, copper is found mainly in the liver, muscle, and bone. The adult body contains between 1.4 and 2.1 mg of copper per kilogram of body weight. In the Roman era , copper was mined principally on Cyprus , the origin of the name of the metal, from aes cyprium (metal of Cyprus), later corrupted to cuprum (Latin). Coper ( Old English ) and copper were derived from this,
2632-405: Is a highly basic anion and is known to stabilize metal ions in high oxidation states. Both copper(III) and even copper(IV) fluorides are known, K 3 CuF 6 and Cs 2 CuF 6 , respectively. Some copper proteins form oxo complexes , which, in extensively studied synthetic analog systems, feature copper(III). With tetrapeptides , purple-colored copper(III) complexes are stabilized by
2726-401: Is because the resistivity to electron transport in metals at room temperature originates primarily from scattering of electrons on thermal vibrations of the lattice, which are relatively weak in a soft metal. The maximum possible current density of copper in open air is approximately 3.1 × 10 A/m , above which it begins to heat excessively. Copper is one of a few metallic elements with
2820-483: Is linked to the Yamnaya migration from the steppes. 45°21′N 19°00′E / 45.350°N 19.000°E / 45.350; 19.000 Copper Copper is a chemical element ; it has symbol Cu (from Latin cuprum ) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity . A freshly exposed surface of pure copper has
2914-533: Is melted in a furnace and then reduced and cast into billets and ingots ; lower-purity scrap is refined by electroplating in a bath of sulfuric acid . The environmental cost of copper mining was estimated at 3.7 kg CO2eq per kg of copper in 2019. Codelco, a major producer in Chile, reported that in 2020 the company emitted 2.8t CO2eq per ton (2.8 kg CO2eq per kg) of fine copper. Greenhouse gas emissions primarily arise from electricity consumed by
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3008-444: Is one of the most important constituents of silver and karat gold solders used in the jewelry industry, modifying the color, hardness and melting point of the resulting alloys. Some lead-free solders consist of tin alloyed with a small proportion of copper and other metals. The alloy of copper and nickel , called cupronickel , is used in low-denomination coins, often for the outer cladding. The US five-cent coin (currently called
3102-518: Is rather derivative of Corded Ware traditions. British and American archaeology since the 1960s have been sceptical about prehistoric migration in general, so the idea of "Bell Beaker Folk" lost ground. A theory of cultural contact de-emphasizing population movement was presented by Colin Burgess and Stephen Shennan in the mid-1970s. Under the "pots, not people" theory, the Beaker culture was seen as
3196-437: Is recovered from mine tailings and heaps. A variety of methods are used including leaching with sulfuric acid, ammonia, ferric chloride. Biological methods are also used. A significant source of copper is from recycling. Recycling is facilitated because copper is usually deployed in its metallic state. In 2001, a typical automobile contained 20–30 kg of copper. Recycling usually begins with some melting process using
3290-411: Is used for various objects exposed to seawater, though it is vulnerable to the sulfides sometimes found in polluted harbors and estuaries. Alloys of copper with aluminium (about 7%) have a golden color and are used in decorations. Shakudō is a Japanese decorative alloy of copper containing a low percentage of gold, typically 4–10%, that can be patinated to a dark blue or black color. Copper forms
3384-605: The Bell Beaker complex or Bell Beaker phenomenon , is an archaeological culture named after the inverted-bell beaker drinking vessel used at the very beginning of the European Bronze Age , arising from around 2800 BC. Bell Beaker culture lasted in Britain from c. 2450 BC, with the appearance of single burial graves, until as late as 1800 BC, but in continental Europe only until 2300 BC, when it
3478-686: The British Geological Survey , in 2005, Chile was the top producer of copper with at least one-third of the world share followed by the United States, Indonesia and Peru. Copper can also be recovered through the in-situ leach process. Several sites in the state of Arizona are considered prime candidates for this method. The amount of copper in use is increasing and the quantity available is barely sufficient to allow all countries to reach developed world levels of usage. An alternative source of copper for collection currently being researched are polymetallic nodules , which are located at
3572-607: The Great Lakes may have also been mining copper during this time, making it one of the oldest known examples of copper extraction in the world. There is evidence from prehistoric lead pollution from lakes in Michigan that people in the region began mining copper c. 6000 BC . Evidence suggests that utilitarian copper objects fell increasingly out of use in the Old Copper Complex of North America during
3666-553: The International Resource Panel 's Metal Stocks in Society report , the global per capita stock of copper in use in society is 35–55 kg. Much of this is in more-developed countries (140–300 kg per capita) rather than less-developed countries (30–40 kg per capita). The process of recycling copper is roughly the same as is used to extract copper but requires fewer steps. High-purity scrap copper
3760-670: The Neolithic period and the Bronze Age was formerly termed the Chalcolithic period (copper-stone), when copper tools were used with stone tools. The term has gradually fallen out of favor because in some parts of the world, the Chalcolithic and Neolithic are coterminous at both ends. Brass, an alloy of copper and zinc, is of much more recent origin. It was known to the Greeks, but became a significant supplement to bronze during
3854-723: The Orion's Belt disappeared from view at the end of winter, which meant the beginning of a new year. The pictographs in the boxes represent: Orion , the Sun, Cassiopeia , Cygnus , Gemini , Pegasus , and the Pleiades . If the box is empty, it means there was nothing visible at the reference point during the corresponding time. People of the Vučedol culture lived in thatched wattle-and-daub houses. Vučedol people lived on hilltop sites surrounded with palisades. Houses were half buried, mostly square or circular in plan with floors of burned clay;
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3948-787: The Pannonian plain and western Balkans and southward. It was thus contemporary with the Sumer period in Mesopotamia , the Early Dynastic period in Egypt and the earliest settlements of Troy (Troy I and II). Archaeogenetics link the culture from Yamnaya migrations directly from the steppes that mixed with Neolithic people. The need for copper resulted in the expansion of the Vucedol Culture from its homeland of Slavonia into
4042-634: The Tagus estuary were maritime. A southern move led to the Mediterranean where 'enclaves' were established in south-western Spain and southern France around the Golfe du Lion and into the Po Valley in Italy , probably via ancient western Alpine trade routes used to distribute jadeite axes. A northern move incorporated the southern coast of Armorica . The enclave established in southern Brittany
4136-525: The Vinča culture date to 4500 BC. Sumerian and Egyptian artifacts of copper and bronze alloys date to 3000 BC. Egyptian Blue , or cuprorivaite (calcium copper silicate) is a synthetic pigment that contains copper and started being used in ancient Egypt around 3250 BC. The manufacturing process of Egyptian blue was known to the Romans, but by the fourth century AD the pigment fell out of use and
4230-404: The migrationism vs. diffusionism debate in 20th-century archaeology , variously described as due to migration, possibly of small groups of warriors, craftsmen or traders, or due to the diffusion of ideas and object exchange. Given the unusual form and fabric of Beaker pottery, and its abrupt appearance in the archaeological record , along with a characteristic group of other artefacts, known as
4324-548: The 9th or 10th century AD. Carbon dating has established mining at Alderley Edge in Cheshire , UK, at 2280 to 1890 BC. Ötzi the Iceman , a male dated from 3300 to 3200 BC, was found with an axe with a copper head 99.7% pure; high levels of arsenic in his hair suggest an involvement in copper smelting. Experience with copper has assisted the development of other metals; in particular, copper smelting likely led to
4418-412: The Bell Beaker "package", the explanation for the Beaker culture until the last decades of the 20th century was to interpret it as the migration of one group of people across Europe. Gordon Childe interpreted the presence of its characteristic artefact as the intrusion of "missionaries" expanding from Iberia along the Atlantic coast, spreading knowledge of copper metallurgy. Stephen Shennan interpreted
4512-533: The Bell Beaker culture was intrusive to southern Germany, and existed contemporarily with the local Corded Ware culture . The burial ritual which typified Bell Beaker sites appears to be intrusive to Western Europe, from Central Europe. Individual inhumations, often under tumuli with the inclusion of weapons contrast markedly to the preceding Neolithic traditions of often collective, weaponless burials in Atlantic/Western Europe. Such an arrangement
4606-719: The Bell Beaker zone. This overturns a previous conviction that single burial was unknown in the early or southern Bell Beaker zone, and so must have been adopted from Corded Ware in the contact zone of the Lower Rhine, and transmitted westwards along the exchange networks from the Rhine to the Loire, and northwards across the English Channel to Britain. The earliest copper production in Ireland, identified at Ross Island in
4700-517: The Bronze Age and a shift towards an increased production of ornamental copper objects occurred. Natural bronze, a type of copper made from ores rich in silicon, arsenic, and (rarely) tin, came into general use in the Balkans around 5500 BC. Alloying copper with tin to make bronze was first practiced about 4000 years after the discovery of copper smelting, and about 2000 years after "natural bronze" had come into general use. Bronze artifacts from
4794-632: The Carpathian Basin, the Bell Beaker culture came in contact with communities such as the Vučedol culture ( c. 3000 –2200 BC), which had evolved partly from the Yamnaya culture (c. 3300–2600 BC). In contrast to the early Bell Beaker preference for the dagger and bow, the favourite weapon in the Carpathian Basin during the first half of the third millennium was the shaft-hole axe. Here, Bell Beaker people assimilated local pottery forms such as
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#17327657760074888-635: The Czech Republic, Slovakia, Austria, Hungary, Romania, Slovenia, Italy, Croatia, Bosnia and Herzegovina, Serbia, Montenegro, Kosovo, Albania and one settlement has even been registered in Eastern Greece. The Vučedol culture developed from two older eneolithic cultures: the Baden culture , mainly in the Pannonian plain , and the Kostolac culture in northern Serbia and western Romania , so
4982-520: The Deer, womb-shaped solar motives, figures of women in clothes without sexual or fertility decoration, symbols of double axe. In pottery, new forms and a new rich decoration, are characterized by the spectacular find, the Vučedol dove. The Vučedol culture exploited native copper ores on a massive scale. The settlement sites destroyed earlier eneolithic settlements, and new Vučedol settlements also developed in regions where none previously existed. The rise of
5076-409: The Mediterranean, using sea routes that had long been in operation, was directly associated with the quest for copper and other rare raw materials. While Bell Beaker ( Glockenbecher ) was introduced as a term for the artefact type at the beginning of the 20th century, recognition of an archaeological Bell Beaker culture has long been controversial. Its spread has been one of the central questions of
5170-541: The Middle East; a copper pendant was found in northern Iraq that dates to 8700 BC. Evidence suggests that gold and meteoric iron (but not smelted iron) were the only metals used by humans before copper. The history of copper metallurgy is thought to follow this sequence: first, cold working of native copper, then annealing , smelting , and, finally, lost-wax casting . In southeastern Anatolia , all four of these techniques appear more or less simultaneously at
5264-664: The Tagus estuary in Portugal. Turek sees late Neolithic precursors in northern Africa, arguing the Maritime style emerged as a result of seaborne contacts between Iberia and Morocco in the first half of the third millennium BC. More recent analyses of the "Beaker phenomenon", published since the 2000s, have persisted in describing the origin of the "Beaker phenomenon" as arising from a synthesis of elements, representing "an idea and style uniting different regions with different cultural traditions and background." The initial moves from
5358-479: The Vučedol Calendar is that each of the four lateral bands on the vessel represent the four seasons, starting with spring on the top. Each band is divided into twelve boxes, making up 12 "weeks" for each season. Each of the little boxes contains an ideogram of celestial objects that lie at a certain point on the horizon right after twilight. The place of reference on the horizon is the point at which (in those days)
5452-434: The Vučedol culture. One male carried haplogroup R1b-z2103 and T2e , while the other carried G2a2a1a2a and T2c2 . The female carried U4a . In a three-way admixture model, first male approximately had 58% Early European Farmers , 42% Western Steppe Herders and 0% Western Hunter-Gatherer -related ancestry, second male 93% EEF, 4% WSH and 3% WHG while female 37% EEF, 54% WSH and 10% WHG. According to Lazaridis, R1b-Z2103
5546-521: The affected areas is highly acidic, with a pH range of 2.1–4.9, and shows elevated electrical conductivity levels between 280 and 1561 mS/cm. These changes in water chemistry make the environment inhospitable for fish, essentially rendering the water uninhabitable for aquatic life. Numerous copper alloys have been formulated, many with important uses. Brass is an alloy of copper and zinc . Bronze usually refers to copper- tin alloys, but can refer to any alloy of copper such as aluminium bronze . Copper
5640-423: The artefacts as belonging to a mobile cultural elite imposing itself over the indigenous substrate populations. Similarly, Sangmeister (1972) interpreted the "Beaker folk" ( Glockenbecherleute ) as small groups of highly mobile traders and artisans. Christian Strahm (1995) used the term "Bell Beaker phenomenon" ( Glockenbecher-Phänomen ) as a compromise in order to avoid the term "culture". Heyd (1998) concluded that
5734-541: The atmosphere; 150 mg/kg in soil; 30 mg/kg in vegetation; 2 μg/L in freshwater and 0.5 μg/L in seawater. Most copper is mined or extracted as copper sulfides from large open pit mines in porphyry copper deposits that contain 0.4 to 1.0% copper. Sites include Chuquicamata , in Chile, Bingham Canyon Mine , in Utah, United States, and El Chino Mine , in New Mexico, United States. According to
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#17327657760075828-525: The back of the head. If the shape of the crest and carefully delineated wings and chest, prove the figure to be the domesticated dove , then it was being raised in Europe 4,500 years ago, much earlier than we commonly think. The "Vučedol Dove" is the oldest dove figure found in Europe so far. The ritual vessel was depicted on the reverse of the Croatian 20 kuna banknote, issued in 1993 and 2001. Among
5922-766: The beginning of the Neolithic c. 7500 BC . Copper smelting was independently invented in different places. The earliest evidence of lost-wax casting copper comes from an amulet found in Mehrgarh , Pakistan, and is dated to 4000 BC. Investment casting was invented in 4500–4000 BC in Southeast Asia Smelting was probably discovered in China before 2800 BC, in Central America around 600 AD, and in West Africa about
6016-457: The broader region of central and southeastern Europe. Following the Baden culture , another wave of possible Indo-European speakers came to the banks of the Danube . One of the major places they occupied is present-day Vučedol , located six kilometers downstream from the town of Vukovar , Croatia . It is estimated that the site had once been home to about 3,000 inhabitants, making it one of
6110-562: The bronze tools associated with beaker use suggests an early Iberian source for the copper, followed subsequently by Central European and Bohemian ores. Vu%C4%8Dedol culture The Vučedol culture (Croatian: Vučedolska kultura ) flourished between 3000 and 2200 BC (the Eneolithic period of earliest copper-smithing), centered in Syrmia and eastern Slavonia on the right bank of the Danube river, but possibly spreading throughout
6204-531: The company, especially when sourced from fossil fuels, and from engines required for copper extraction and refinement. Companies that mine land often mismanage waste, rendering the area sterile for life. Additionally, nearby rivers and forests are also negatively impacted. The Philippines is an example of a region where land is overexploited by mining companies. Copper mining waste in Valea Şesei, Romania, has significantly altered nearby water properties. The water in
6298-522: The deprotonated amide ligands. Complexes of copper(III) are also found as intermediates in reactions of organocopper compounds, for example in the Kharasch–Sosnovsky reaction . A timeline of copper illustrates how this metal has advanced human civilization for the past 11,000 years. Copper occurs naturally as native metallic copper and was known to some of the oldest civilizations on record. The history of copper use dates to 9000 BC in
6392-461: The depths of the Pacific Ocean approximately 3000–6500 meters below sea level. These nodules contain other valuable metals such as cobalt and nickel . Copper has been in use for at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900. As with many natural resources, the total amount of copper on Earth is vast, with around 10 tons in
6486-563: The discovery of iron smelting . Production in the Old Copper Complex in Michigan and Wisconsin is dated between 6500 and 3000 BC. A copper spearpoint found in Wisconsin has been dated to 6500 BC. Copper usage by the indigenous peoples of the Old Copper Complex from the Great Lakes region of North America has been radiometrically dated to as far back as 7500 BC. Indigenous peoples of North America around
6580-407: The emergence of regional elites. A wide range of regional diversity persists within the widespread late Beaker culture, particularly in local burial styles (including incidences of cremation rather than burial), housing styles, economic profile, and local ceramic wares ( Begleitkeramik ). Nonetheless, according to Lemercier (2018) the mature phase of the Beaker culture represents "the appearance of
6674-545: The fastest water exchange rate (speed of water ligands attaching and detaching) for any transition metal aquo complex . Adding aqueous sodium hydroxide causes the precipitation of light blue solid copper(II) hydroxide . A simplified equation is: Aqueous ammonia results in the same precipitate. Upon adding excess ammonia, the precipitate dissolves, forming tetraamminecopper(II) : Many other oxyanions form complexes; these include copper(II) acetate , copper(II) nitrate , and copper(II) carbonate . Copper(II) sulfate forms
6768-526: The ground linked it to the limping shaman-smith, according to the recent interpretation by Aleksandar Durman of Zagreb . The figure is a remarkable example of artistic creation and religious symbolism associated with a cult of the Great Mother . The "Vučedol Dove" is a 19,5 cm high ritual vessel made from baked clay. Three symbols of double axes and a necklace were incised on its neck with lines covering its wings and chest, and an unusual crest on
6862-496: The largest and most important European centers of its time. According to Bogdan Brukner, proto- Illyrians descended from this wave of Indo-European settlers. The early stages of the culture occupied locations not far from mountain ranges, where copper deposits were located, because of their main invention: making tools from arsenical copper in series reusing double, two-part moulds. The Vučedol culture at its peak completely or partially covered 14 of today’s European countries –
6956-511: The later spelling first used around 1530. Copper, silver , and gold are in group 11 of the periodic table; these three metals have one s-orbital electron on top of a filled d- electron shell and are characterized by high ductility , and electrical and thermal conductivity. The filled d-shells in these elements contribute little to interatomic interactions, which are dominated by the s-electrons through metallic bonds . Unlike metals with incomplete d-shells, metallic bonds in copper are lacking
7050-419: The level of <1% Cu. Concentration of the ore is required, which begins with comminution followed by froth flotation . The remaining concentrate is the smelted, which can be described with two simplified equations: Cuprous oxide reacts with cuprous sulfide to convert to blister copper upon heating This roasting gives matte copper, roughly 50% Cu by weight, which is purified by electrolysis. Depending on
7144-472: The modern world. The price of copper is volatile . After a peak in 2022 the price unexpectedly fell. The global market for copper is one of the most commodified and financialized of the commodity markets , and has been so for decades. The great majority of copper ores are sulfides. Common ores are the sulfides chalcopyrite (CuFeS 2 ), bornite (Cu 5 FeS 4 ) and, to a lesser extent, covellite (CuS) and chalcocite (Cu 2 S). These ores occur at
7238-465: The most famous pieces is a piece of ceramics dated to 2600 BC with an astral calendar, the first one found in Europe that shows the year starting at the dusk of the first day of spring. It is based on an Orion cycle, shown by precise sequence of constellations on a vessel found in an Eneolithic mound in the very center of the modern town of Vinkovci . The climatic conditions in that latitude bring about four yearly seasons. The simple explanation of
7332-406: The most famous pieces of Vučedol is the ritual vessel made between 2800 and 2500 BCE, called by the speculative attribution of M. Seper, who found it in 1938, the "Vučedol Dove" ( vučedolska golubica ). The latest interpretation, however, is that the vessel is in the shape of the male partridge , a symbol of fertility, whose limping defensive behavior against attack by predators on a partridge nest on
7426-516: The numerous copper sulfides , important examples include copper(I) sulfide ( Cu 2 S ) and copper monosulfide ( CuS ). Cuprous halides with fluorine , chlorine , bromine , and iodine are known, as are cupric halides with fluorine , chlorine , and bromine . Attempts to prepare copper(II) iodide yield only copper(I) iodide and iodine. Copper forms coordination complexes with ligands . In aqueous solution, copper(II) exists as [Cu(H 2 O) 6 ] . This complex exhibits
7520-428: The ore, sometimes other metals are obtained during the electrolysis including platinum and gold. Aside from sulfides, another family of ores are oxides. Approximately 15% of the world's copper supply derives from these oxides. The beneficiation process for oxides involves extraction with sulfuric acid solutions followed by electrolysis. In parallel with the above method for "concentrated" sulfide and oxide ores, copper
7614-455: The period 2400–2200 BC, was associated with early Beaker pottery. Here, the local sulpharsenide ores were smelted to produce the first copper axes used in Britain and Ireland. The same technologies were used in the Tagus region and in the west and south of France. The evidence is sufficient to support the suggestion that the initial spread of Maritime Bell Beakers along the Atlantic and into
7708-651: The polypod cup. These "common ware" types of pottery then spread in association with the classic bell beaker. The Rhine was on the western edge of the vast Corded Ware zone ( c. 3100 – c. 2350 BC ), forming a contact zone with the Bell Beaker culture. From there, the Bell Beaker culture spread further into Eastern Europe, replacing the Corded Ware culture up to the Vistula (Poland). A review in 2014 revealed that single burial, communal burial, and reuse of Neolithic burial sites are found throughout
7802-564: The primary region of Vučedol development is eastern Croatia and the Syrmia region. The archaeological stratigraphy of the Vučedol culture can be divided into four phases: The Vučedol culture is the final eneolithic culture of the region, displaying characteristically common use of the war axe in its "Banniabik" form. Cult objects suggest the practice of new cults very different from the Neolithic Magna Mater conception: cult of
7896-414: The same time, stronger sexual potency. "That is why", according to Aleksandar Durman, "all eneolithic, or later gods of metallurgy are identified with fertility, and also why all gods in almost all early cultures – limp". It was a society of deep social changes and stratification that led to the birth of tribal and military aristocracy. Also, Vučedol people had enough time to express their spiritual view of
7990-750: The secret to its manufacturing process became lost. The Romans said the blue pigment was made from copper, silica, lime and natron and was known to them as caeruleum . The Bronze Age began in Southeastern Europe around 3700–3300 BC, in Northwestern Europe about 2500 BC. It ended with the beginning of the Iron Age, 2000–1000 BC in the Near East, and 600 BC in Northern Europe. The transition between
8084-468: The shapes were also combined in mushroom shapes; there were circular fireplaces. The houses at the Vučedol site were also places of birth and burial. A number of human skeletons were found in the pits that once served as food storage pits . Their bodies were placed in a ritual way, with some possible indications of human sacrifice . Also, marks on the foreheads of skulls were found that could be attributed to some kind of initiation in early childhood by
8178-438: The sugar is signaled by a color change from blue Cu(II) to reddish copper(I) oxide. Schweizer's reagent and related complexes with ethylenediamine and other amines dissolve cellulose . Amino acids such as cystine form very stable chelate complexes with copper(II) including in the form of metal-organic biohybrids (MOBs). Many wet-chemical tests for copper ions exist, one involving potassium ferricyanide , which gives
8272-399: The top kilometer of Earth's crust, which is about 5 million years' worth at the current rate of extraction. However, only a tiny fraction of these reserves is economically viable with present-day prices and technologies. Estimates of copper reserves available for mining vary from 25 to 60 years, depending on core assumptions such as the growth rate. Recycling is a major source of copper in
8366-424: The world. In modern times, Vučedol ceramics have become famous worldwide. A very characteristic bi-conical shape and typical ornaments evolved, in many cases with typical "handles" which were almost non-functional, but were key to understanding ornaments that had symbolic meanings, representing ideas such as "horizon", "mountains", "sky", "underworld", "sun", "constellation of Orion ", " Venus ", et cetera. One of
8460-527: Was found in 1857 on the Keweenaw Peninsula in Michigan, US. Native copper is a polycrystal , with the largest single crystal ever described measuring 4.4 × 3.2 × 3.2 cm . Copper is the 26th most abundant element in Earth's crust , representing 50 ppm compared with 75 ppm for zinc , and 14 ppm for lead . Typical background concentrations of copper do not exceed 1 ng/m in
8554-403: Was introduced by John Abercromby in 1904. In its early phase, the Bell Beaker culture can be seen as the western contemporary of the Corded Ware culture of Central Europe. From about 2400 BC the Beaker folk culture expanded eastwards, into the Corded Ware horizon. In parts of Central and Eastern Europe, as far east as Poland , a sequence occurs from Corded Ware to Bell Beaker. This period marks
8648-729: Was linked closely to the riverine and landward route, via the Loire , and across the Gâtinais Valley to the Seine Valley, and thence to the lower Rhine . This was a long-established route reflected in early stone axe distributions, and via this network, Maritime Bell Beakers first reached the Lower Rhine in c. 2600 BC. Another expansion brought Bell Beaker to Csepel Island in Hungary by about 2500 BC. In
8742-406: Was more resilient to times of want. The community chief was the shaman -smith, possessing the arcane knowledge of avoiding poisonous arsenic gas which is connected to the technology of coppersmithing as well as understanding the year cycle. Still, the whole life of shaman-smith could not pass without biological consequences of chronic arsenic exposure: slow loss of body movement coordination, and at
8836-491: Was succeeded by the Únětice culture . The culture was widely dispersed throughout Western Europe, being present in many regions of Iberia and stretching eastward to the Danubian plains , and northward to the islands of Great Britain and Ireland , and was also present in the islands of Sardinia and Sicily and some coastal areas in north-western Africa . The Bell Beaker phenomenon shows substantial regional variation, and
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