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Electrum

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Electrum consists primarily of gold and silver but is sometimes found with traces of platinum, copper and other metals. The name is mostly applied informally to compositions between 20–80% gold and 80–20% silver, but these are strictly called gold or silver depending on the dominant element. Analysis
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Because of variation in the composition of electrum, it was difficult to determine the exact worth of each coin. Widespread trading was hampered by this problem, as the intrinsic value of each electrum coin could not be easily determined. This suggests that one reason for the invention of coinage in
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Electrum was much better for coinage than gold, mostly because it was harder and more durable, but also because techniques for refining gold were not widespread at the time. The gold content of naturally occurring electrum in modern western Anatolia ranges from 70% to 90%, in contrast to the 45–55%
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of gold in electrum used in ancient Lydian coinage of the same geographical area. This suggests that the Lydians had already solved the refining technology for silver and were adding refined silver to the local native electrum some decades before introducing pure silver coins.
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are derived. Electrum was often referred to as "white gold" in ancient times but could be more accurately described as pale gold because it is usually pale yellow or yellowish-white in color. The modern use of the term
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and other metals. Its color ranges from pale to bright yellow, depending on the proportions of gold and silver. It has been produced artificially and is also known as "
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of the composition of electrum in ancient Greek coinage dating from about 600 BC shows that the gold content was about 55.5% in the coinage issued by
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stater was about 0.14 grams (0.0049 oz) to 0.15 grams (0.0053 oz). Larger denominations, such as a one stater coin, were minted as well.
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with mythological scenes, a sphinx frieze and the repre­sentation of a king vanquishing his enemies, Cypro-Archaic I, from
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made were of electrum, dating back to the end of the 7th century or the beginning of the 6th century BC.
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In Lydia, electrum was minted into coins weighing 4.7 grams (0.17 oz), each valued at
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Natural electrum "wires" on quartz, historic specimen from the old Smuggler-Union Mine,
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electrum coins with a regularly decreasing proportion of gold were issued by the
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Coins, Bodies, Games, and Gold: The Politics of Meaning in Archaic Greece
685: 498: 353: 245: 42: 707: 1600: 1545: 1420: 1333: 1291: 1193: 1142: 1079: 1054: 929: 696:. Vol. 9 (11th ed.). Cambridge University Press. p. 252. 620: 614: 603: 502: 169: 1301: 625: 1746: 1739: 1610: 1605: 1585: 1510: 1435: 1429: 1410: 1306: 1247: 1162: 1059: 994: 969: 959: 889: 868: 635: 609: 600:– a highly prized alloy in antiquity that may have contained electrum 369:
Electrum is mentioned in an account of an expedition sent by Pharaoh
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usually concerns gold alloyed with any one or a combination of
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This article is about the metal alloy. For the sculpture, see
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Electrum was used as early as the third millennium BC in the
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An image of the obverse of a Lydian coin made of electrum
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Electrum lion coins of the ancient Lydians (about 600 BC)
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These difficulties were eliminated circa 570 BC when the
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Nature's building blocks: an A–Z guide to the elements
328:), one of the oldest known coins, early 6th century BC 221:, referring to a metallic substance consisting of 632:of gold and copper with a dark blue-purple patina 1842: 810:New archaic coin finds at Sardis, AJA 109 (2005) 357:A mummified male head covered in electrum, from 285:the gold content of electrum ranged from 46% in 229:. The same word was also used for the substance 784:The Oxford Handbook of Greek and Roman Coinage 853: 638:– another Japanese alloy known for its patina 309:the purity of the gold coinage was reduced 752:. Princeton University Press. pp. 6–7. 183:. It was also used in the making of ancient 786:. Oxford University Press. pp. 49–50. 497:that area was to increase the profits from 860: 846: 503:issuing currency with a lower gold content 168:, sometimes as an exterior coating to the 237:properties that the modern English words 680: 676: 674: 352: 331: 316: 110: 90: 74: 62: 806: 718: 648:or "thunderbolt iron" commonly used in 87:obtained electrum for its early coinage 14: 1843: 773: 771: 769: 841: 777: 745: 671: 657:– a similar material, originating in 505:than the commonly circulating metal. 800: 766: 399:The earliest known electrum coins, 24: 268:to produce a silver-colored gold. 25: 1882: 821: 780:"Asia Minor to the Ionian Revolt" 453:(sixth), and so forth, including 782:. In Metcalf, William E. (ed.). 569: 549: 533: 517: 394: 361:, Roman period, 2nd century AD ( 739: 700: 463:of a stater, and even down to 271: 56:. For the Israeli figure, see 13: 1: 867: 807:Cahill, Nick; Kroll, John H. 664: 581: 344: 124: 363:Musée des beaux-arts de Lyon 194: 7: 728:. Oxford University Press. 591: 10: 1887: 687:"Electrum, Electron"  564:, early–mid 4th century BC 377:. It is also discussed by 312: 51: 36: 29: 1856:Coinage metals and alloys 1797: 1759: 1702: 1624: 1395: 1332: 1271: 1233: 1226: 1186: 1088: 1042: 1035: 875: 324:electrum coin (one-third 141:is a naturally occurring 119:, from the necropolis of 187:. The first known metal 153:, with trace amounts of 103:, 8th–7th centuries BC ( 45:. For the gemstone, see 30:Not to be confused with 27:Alloy of gold and silver 1362:Nickel silver (alpacca) 693:Encyclopædia Britannica 746:Kurke, Leslie (1999). 407:coins found under the 375:Fifth Dynasty of Egypt 366: 350: 329: 135: 115:Brooch with a griffin 108: 88: 72: 1861:Precious metal alloys 1703:Other natural objects 778:Konuk, Koray (2012). 659:Pre-Columbian America 356: 336:Electrum coin of the 335: 320: 114: 94: 78: 66: 1178:Wire wrapped jewelry 1158:Repoussé and chasing 724:Emsley, John (2003) 419:during the reign of 303:Eastern Roman Empire 215:), mentioned in the 166:Old Kingdom of Egypt 39:Electrum (sculpture) 1720:Ebonite (vulcanite) 813:. pp. 609–614. 556:Electrum coin from 524:Electrum coin from 69:Telluride, Colorado 1065:Jewellery designer 540:Electrum trite of 384:Naturalis Historia 367: 351: 341:Alexius I Comnenus 330: 295:Hellenistic period 136: 109: 89: 83:river, from which 73: 1838: 1837: 1755: 1754: 1625:Organic gemstones 1222: 1221: 598:Corinthian bronze 576:Electrum stater, 542:Alyattes of Lydia 483:of a stater. The 409:Temple of Artemis 338:Byzantine Emperor 128: 625–600 BC 16:(Redirected from 1878: 1282:Britannia silver 1231: 1230: 1040: 1039: 862: 855: 848: 839: 838: 815: 814: 804: 798: 797: 775: 764: 763: 743: 737: 722: 716: 715: 712:worldhistory.org 704: 698: 697: 689: 678: 586: 583: 573: 553: 537: 521: 492: 491: 487: 482: 481: 477: 472: 471: 467: 462: 461: 457: 439: 438: 434: 349: 346: 305:controlled from 283:classical period 185:drinking vessels 174:ancient Egyptian 129: 126: 21: 1886: 1885: 1881: 1880: 1879: 1877: 1876: 1875: 1841: 1840: 1839: 1834: 1793: 1751: 1740:Spondylus shell 1698: 1620: 1391: 1377:Stainless steel 1328: 1312:Sterling silver 1272:Precious metal 1267: 1235:Precious metals 1218: 1182: 1084: 1031: 871: 866: 824: 819: 818: 805: 801: 794: 776: 767: 760: 744: 740: 723: 719: 706: 705: 701: 679: 672: 667: 594: 587: 584: 574: 565: 554: 545: 538: 529: 522: 489: 485: 484: 479: 475: 474: 469: 465: 464: 459: 455: 454: 436: 432: 431: 397: 379:Pliny the Elder 347: 315: 301:. In the later 281:. In the early 274: 211:word ἤλεκτρον ( 197: 127: 97:Phoenician bowl 61: 58:Zvika Greengold 50: 35: 28: 23: 22: 15: 12: 11: 5: 1884: 1874: 1873: 1868: 1863: 1858: 1853: 1836: 1835: 1833: 1832: 1827: 1822: 1817: 1812: 1807: 1802: 1801:Related topics 1798: 1795: 1794: 1792: 1791: 1786: 1781: 1775: 1769: 1763: 1761: 1757: 1756: 1753: 1752: 1750: 1749: 1744: 1743: 1742: 1732: 1727: 1722: 1717: 1712: 1706: 1704: 1700: 1699: 1697: 1696: 1691: 1686: 1681: 1676: 1671: 1666: 1665: 1664: 1659: 1649: 1644: 1639: 1634: 1628: 1626: 1622: 1621: 1619: 1618: 1613: 1608: 1603: 1598: 1593: 1588: 1583: 1578: 1573: 1568: 1563: 1558: 1548: 1543: 1538: 1533: 1528: 1523: 1518: 1513: 1508: 1503: 1498: 1493: 1488: 1483: 1478: 1473: 1468: 1463: 1458: 1453: 1448: 1443: 1438: 1433: 1423: 1418: 1413: 1408: 1402: 1400: 1393: 1392: 1390: 1389: 1384: 1379: 1374: 1369: 1364: 1359: 1354: 1349: 1344: 1338: 1336: 1330: 1329: 1327: 1326: 1321: 1320: 1319: 1309: 1304: 1299: 1294: 1289: 1284: 1278: 1276: 1269: 1268: 1266: 1265: 1260: 1255: 1250: 1245: 1239: 1237: 1228: 1224: 1223: 1220: 1219: 1217: 1216: 1211: 1206: 1201: 1196: 1190: 1188: 1184: 1183: 1181: 1180: 1175: 1173:Wire sculpture 1170: 1165: 1160: 1155: 1150: 1145: 1140: 1135: 1130: 1125: 1120: 1119: 1118: 1113: 1108: 1098: 1092: 1090: 1086: 1085: 1083: 1082: 1077: 1072: 1067: 1062: 1057: 1052: 1046: 1044: 1037: 1033: 1032: 1030: 1029: 1028: 1027: 1022: 1012: 1007: 1002: 997: 992: 987: 982: 977: 972: 967: 962: 957: 952: 947: 942: 937: 932: 927: 922: 917: 912: 907: 902: 897: 892: 887: 881: 879: 873: 872: 865: 864: 857: 850: 842: 836: 835: 830: 823: 822:External links 820: 817: 816: 799: 792: 765: 758: 738: 717: 699: 684:, ed. (1911). 682:Chisholm, Hugh 669: 668: 666: 663: 662: 661: 652: 644:– an alloy of 639: 633: 623: 618: 612: 607: 601: 593: 590: 589: 588: 575: 568: 566: 555: 548: 546: 539: 532: 530: 523: 516: 396: 393: 314: 311: 307:Constantinople 273: 270: 196: 193: 26: 9: 6: 4: 3: 2: 1883: 1872: 1871:Copper alloys 1869: 1867: 1864: 1862: 1859: 1857: 1854: 1852: 1849: 1848: 1846: 1831: 1828: 1826: 1823: 1821: 1818: 1816: 1813: 1811: 1808: 1806: 1805:Body piercing 1803: 1800: 1799: 1796: 1790: 1787: 1785: 1782: 1779: 1776: 1773: 1770: 1768: 1765: 1764: 1762: 1758: 1748: 1745: 1741: 1738: 1737: 1736: 1733: 1731: 1728: 1726: 1723: 1721: 1718: 1716: 1713: 1711: 1708: 1707: 1705: 1701: 1695: 1694:Tortoiseshell 1692: 1690: 1687: 1685: 1682: 1680: 1677: 1675: 1672: 1670: 1667: 1663: 1660: 1658: 1655: 1654: 1653: 1650: 1648: 1645: 1643: 1640: 1638: 1635: 1633: 1630: 1629: 1627: 1623: 1617: 1614: 1612: 1609: 1607: 1604: 1602: 1599: 1597: 1594: 1592: 1589: 1587: 1584: 1582: 1579: 1577: 1574: 1572: 1569: 1567: 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520: 515: 514: 513: 511: 506: 504: 500: 494: 452: 449:(third), the 448: 444: 443: 428: 424: 422: 418: 414: 410: 406: 402: 395:Early coinage 392: 390: 386: 385: 380: 376: 372: 364: 360: 359:Ancient Egypt 355: 342: 339: 334: 327: 323: 319: 310: 308: 304: 300: 299:Carthaginians 296: 292: 288: 284: 280: 269: 267: 263: 259: 255: 254: 248: 247: 242: 241: 236: 235:electrostatic 232: 228: 225:alloyed with 224: 220: 219: 214: 210: 206: 202: 192: 190: 186: 182: 178: 175: 171: 167: 162: 160: 156: 152: 148: 144: 140: 133: 122: 118: 113: 106: 102: 98: 93: 86: 82: 77: 70: 65: 59: 55: 48: 44: 40: 33: 19: 1830:Wearable art 1825:Phaleristics 1820:Metalworking 1725:Gutta-percha 1501:Lapis lazuli 1296: 1287:Colored gold 1168:Stonesetting 809: 802: 783: 748: 741: 720: 711: 702: 691: 544:, 610–560 BC 528:, 620–600 BC 507: 495: 450: 446: 440: 429: 425: 401:Lydian coins 398: 382: 368: 275: 251: 244: 238: 216: 212: 207:form of the 200: 198: 163: 138: 137: 54:Green-yellow 1767:Art jewelry 1591:Tiger's eye 1496:Labradorite 1446:Chrysocolla 1441:Chrysoberyl 1357:Mokume-gane 1334:Base metals 1106:centrifugal 1075:Silversmith 950:Ferronnière 900:Belt buckle 895:Belly chain 499:seigniorage 348: 1080 272:Composition 246:electricity 170:pyramidions 43:Positronium 1845:Categories 1601:Tourmaline 1546:Prasiolite 1421:Aventurine 1292:Crown gold 1194:Draw plate 1143:Metal clay 1080:Watchmaker 1070:Lapidarist 1055:Clockmaker 930:Collar pin 925:Chatelaine 759:0691007365 734:0198503407 665:References 621:Panchaloha 615:Orichalcum 604:Crown gold 405:East Greek 289:to 43% in 260:, silver, 253:white gold 159:green gold 123:, Rhodes, 18:Green gold 1747:Toadstone 1684:Operculum 1611:Variscite 1606:Turquoise 1586:Tanzanite 1521:Moonstone 1516:Marcasite 1511:Malachite 1436:Carnelian 1411:Amazonite 1398:gemstones 1372:Pinchbeck 1317:Argentium 1307:Shibuichi 1248:Palladium 1227:Materials 1163:Soldering 1153:Polishing 1128:Engraving 1123:Enameling 1089:Processes 1060:Goldsmith 995:Tie chain 970:Neck ring 960:Lapel pin 869:Jewellery 708:"Coinage" 636:Shibuichi 610:Hepatizon 510:Croeseids 266:palladium 205:Latinized 199:The name 195:Etymology 95:Electrum 1815:Gemology 1789:Fineness 1780:(purity) 1715:Bog-wood 1662:Precious 1642:Ammolite 1581:Sunstone 1571:Sodalite 1566:Sapphire 1526:Obsidian 1466:Fluorite 1456:Diopside 1416:Amethyst 1396:Mineral 1387:Tungsten 1382:Titanium 1297:Electrum 1253:Platinum 1138:Kazaziye 1133:Filigree 1111:lost-wax 1010:Toe ring 1000:Tie clip 975:Pectoral 965:Necklace 940:Cufflink 915:Bracelet 910:Bolo tie 890:Barrette 736:. p. 168 592:See also 578:Carthage 421:Alyattes 291:Mytilene 262:platinum 240:electron 213:ḗlektron 201:electrum 181:obelisks 177:pyramids 139:Electrum 121:Kameiros 107:, Paris) 81:Pactolus 32:Electron 1810:Fashion 1784:Finding 1632:Abalone 1541:Peridot 1506:Larimar 1491:Kyanite 1476:Howlite 1461:Emerald 1451:Diamond 1324:Tumbaga 1302:Shakudō 1258:Rhodium 1209:Mandrel 1148:Plating 1101:Casting 1096:Carving 1005:Tie pin 980:Pendant 955:Genital 945:Earring 655:Tumbaga 642:Thokcha 626:Shakudō 558:Cyzicus 526:Ephesus 488:⁄ 478:⁄ 468:⁄ 458:⁄ 435:⁄ 413:Ephesus 389:Ezekiel 381:in his 373:of the 313:History 287:Phokaia 279:Phocaea 218:Odyssey 203:is the 117:protome 101:Idalion 1866:Silver 1774:(mass) 1710:Bezoar 1616:Zircon 1576:Spinel 1551:Quartz 1486:Jasper 1471:Garnet 1367:Pewter 1352:Copper 1347:Bronze 1274:alloys 1263:Silver 1214:Pliers 1204:Hammer 1116:vacuum 1043:People 1036:Making 1020:pocket 920:Brooch 885:Anklet 790:  756:  732:  630:billon 442:stater 371:Sahure 326:stater 322:Lydian 258:nickel 227:silver 155:copper 151:silver 132:Louvre 105:Louvre 1778:Carat 1772:Carat 1760:Terms 1735:Shell 1689:Pearl 1679:Nacre 1669:Ivory 1657:Black 1652:Coral 1647:Copal 1637:Amber 1596:Topaz 1555:smoky 1426:Beryl 1406:Agate 1342:Brass 1187:Tools 1025:strap 1015:Watch 990:Tiara 935:Crown 905:Bindi 877:Forms 650:Tibet 562:Mysia 451:hekte 447:trite 417:Lydia 231:amber 209:Greek 189:coins 172:atop 143:alloy 85:Lydia 71:, USA 47:Amber 1851:Gold 1730:Hair 1561:Ruby 1536:Opal 1531:Onyx 1481:Jade 1243:Gold 1199:File 985:Ring 788:ISBN 754:ISBN 730:ISBN 473:and 403:and 264:and 243:and 223:gold 179:and 149:and 147:gold 79:The 1674:Jet 1430:red 501:by 411:at 391:. 161:". 145:of 1847:: 768:^ 710:. 690:. 673:^ 582:c. 580:, 560:, 490:96 480:96 470:48 460:24 423:. 345:c. 343:, 125:c. 1557:) 1553:( 1432:) 1428:( 861:e 854:t 847:v 796:. 762:. 714:. 486:1 476:1 466:1 456:1 437:3 433:1 365:) 134:) 130:( 60:. 49:. 34:. 20:)

Index

Green gold
Electron
Electrum (sculpture)
Positronium
Amber
Green-yellow
Zvika Greengold

Telluride, Colorado

Pactolus
Lydia

Phoenician bowl
Idalion
Louvre

protome
Kameiros
Louvre
alloy
gold
silver
copper
green gold
Old Kingdom of Egypt
pyramidions
ancient Egyptian
pyramids
obelisks

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