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Torbernite

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to zeunerite, and metatorbernite is isostructural to metazeunerite. All four compounds are of the layered autunite type with the structural motif (with X = P or As). The Cu ions are coordinated in a square-planar fashion by water molecules in all these compounds, and further coordinate to the uranyl
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and . The analysis by Locock and Burns confirms the finding by Stergiou et al., that the Cu ions only have an 88% crystallographic occupancy. The authors assume that by protonation of some of the water molecules there is a charge compensation for electronic neutrality, as it is discussed with the
685:. In these studies they were able to finally analyse the crystal structure of torbernite for the very first time, and to get a significantly more precise analysis for the structure of metatorbernite, compared with previous studies (Makarov and Tobelko 839:, who show that the different steps of hydration between torbernite and metatorbernite have clear boundaries, and the water content of each compound remains constant and does not vary, in contrast for instance, as seen in minerals of the 1619: 941:
Torbernite is relatively common, and world-wide there are more than 1100 documented localities known by 2022. In Germany it is known not only from its type locality Johanngeorgenstadt, but also from other areas in the
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The mineral is often encountered as small thin tabular crystals, but may also be flaky or powdery. More rare are thicker plates, resembling a stacked deck of cards. More frequent than these are dipyramidal forms.
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Intergrowth of dipyramidal crystals of metatorbernite in a geode from Les Montmins Mine (Ste Barbe Ader), ÉchassiĂšres, Kanton Ébreuil, DĂ©partement Allier, Auvergne, France (Field of view: 1 mm × 1 mm)
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uses Born's work and describes the mineral in more detail, calling it at first "grĂŒner Glimmer" (green mica), later naming it "torbernite" in honour of the Swedish mineralogist and chemist
760:. It forms as torbernite withers, and can also be obtained by artificially heating torbernite above 75 °C. The crystals are rather opaque and only weakly translucent with a glassy lustre. 489:(IMA), which last updated its list in 2009, the Nickel-Strunz system lists torbernite in the section of "uranyl phosphates and arsenates". There it is part of the sub-section "UO 815:
The crystal structure of metatorbernite is different from torbernite as every second uranyl phosphate layer is moved about one half of the length of the crystallographic
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The analysis by Locock and Burns shows eight molecules of water per formula unit in metatorbernite. This is in accord with the works by Arthur Francis Hallimons and
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Crystal structures and synthesis of the copper-dominant members of the autunite and meta-autunite groups: torbernite, zeunerite, metatorbernite and metazeunerite
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In a study in 2003, using fresh, synthetic crystals, Locock and Burns have compared the crystal structures of the copper uranyl phosphates torbernite, Cu
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Dana groups the mineral into the class "phosphates, arsenates and vanadates", into the section "hydrated phosphates etc." into an unnamed group with
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Contrary to its calcium analogue autunite the mineral does not fluoresce. The mineral is very brittle. Its hardness (Mohs) is between 2 and 2.5.
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Because of the inherent toxicity of uranium compounds, samples of this mineral should be kept in air tight glass jars.
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group. Therefore, sum formulae indicating varying degrees of water for torbernite and metatorbernite must not be used.
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Torbernite forms as a secondary mineral on the oxidation zone of uranium ores. It is often found in paragenesis with
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and other uranium-bearing deposits as a secondary mineral. The chemical formula of torbernite is similar to that of
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BeitrĂ€ge zur Kenntnis seltener Arsenatmineralien unter besonderer BerĂŒcksichtigung von Vorkommen des Schwarzwaldes
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O, a new uranyl-oxide hydroxy-hydrate mineral from Shinkolobwe with a novel uranyl-anion sheet-topology
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T. A. Olds, J. Pláơil, A. R. Kampf, R. Ơkoda, P. C. Burns, J. Čejka, V. Bourgoin and J.-C. Boulliard:
465:, calling it "mica viridis crystallina, ibid." (green crystalline mica from Johanngeorgenstadt, Sax.; 1685: 534: 474: 418: 530: 510: 1334: 1229: 737: 522: 255: 245: 836: 825: 538: 518: 1670: 454: 212: 80: 506: 1739: 1300: 1241: 955: 947: 884: 526: 1225: 1111: 293: 202: 87: 60: 1484: 1276: 1703:. Database of Raman spectroscopy, X-ray diffraction and chemistry of minerals (rruff.info) 1565: 1240:, E. Schweizerbart’sche Verlagsbuchhandlung (NĂ€gele u. Obermiller), Stuttgart, 524 pages. 951: 1342: 1590: 1583:
Tschermaks mineralogische und petrographische Mitteilungen (Mineralogy & Petrology)
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Crystal structure of copper bis(uranyl phosphate) octahydrate (metatorbernite), Cu(UO
943: 828:. The same is postulated by the same authors for autunite. Due to the limitations of 721: 712: 542: 323: 303: 192: 142: 1654: 1632: 1454: 1317: 1160: 732: 568: 445: 1388: 1063: 820: 514: 174: 1538: 1094: 1067: 935: 612: 502: 392: 351: 313: 157: 50: 31: 1377:
Studies of the torbernite minerals. II. The crystal structure of metatorbernite
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Strunz Mineralogical Tables. Chemical-structural Mineral Classification System
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Because of its uranium content of about 48 % the material is strongly
720:. The additional water molecules are held in the crystal structure only by 1413: 1098:
A torbernite specimen from the Margabal Mine in the Midi-Pyrénées, France
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in the Erzgebirge Mountains in Saxony. It was first mentioned in 1772 by
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Torbernite dehydrates readily to metatorbernite with the sum formula Cu
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Metatorbernite crystallises tetragonally-dipyramidally in space group
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Meta-torbernite I. Its physical properties and relation to torbernite
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Torbernite was found for the first time at Georg Wagsfort Mine near
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J. W. Anthony, R. A. Bideaux, K. W. Bladh, M. C. Nichols (Eds.):
887:. According to the sum formula a specific activity of 85.9 k 779: = 17.349(2) Ă… and 2 formula units per unit cell. 630: = 20.807(2) Ă… and 2 formula units per unit cell. 1671:"American-Mineralogist-Crystal-Structure-Database – Torbernite" 832:
this postulate is practically not verifiable with this method.
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in which a Cu cation replaces a Ca cation. Torbernite tends to
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Tabular crystals; Foliated to earthy masses and encrustations
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Refinement of the crystal structure of metatorbernite
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http://cnmnc.main.jp/IMA2009-01%20UPyear%20160309.pdf
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641 – 713 g/mol, depending the degree of water loss
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Colour code: 1127: 487:International Mineralogical Association 857:(Field of view: 7 mm × 5 mm) 40: 1649:List of localities for torbernite at 716:oxygen atoms, forming octahedra with 298:nω = 1.590 – 1.592 nΔ = 1.581 – 1.582 7: 946:, as well as from the Black Forest, 704:1 = 9.2 % vs. Locock und Burns 572:Packing of torbernite. Colour code: 280:measured: 3.22; calculated: 3.264(1) 1356:Crystal structure of metatorbernite 1293:Klockmanns Lehrbuch der Mineralogie 1117:List of minerals named after people 711:The study shows that torbernite is 1174:IMA–CNMNC approved mineral symbols 775: = 6.9756(5) Ă… and 700:1 = 5.6 %, Calos and Kennard 626: = 7.0267(4) Ă… und 25: 147:Ditetragonal dipyramidal (4/mmm) 1447:Zeitschrift fĂŒr Kristallographie 1406:Zeitschrift fĂŒr Kristallographie 1000:Democratic Republic of the Congo 879:Physical and chemical properties 696:1 = 9.7 %, Stergiou et al. 657:with those of the copper uranyl 469:= "as the item above"). In 1780 358: 346: 65:Democratic Republic of the Congo 49: 1701:"Metatorbernite search results" 1425:N. J. Calos, C. H. L. Kennard: 1339:IMA/CNMNC List of Minerals 2009 27:Copper uranyl phosphate mineral 1612:European Journal of Mineralogy 1354:E. S. Makarov, K. I. Tobelko: 1299:, Enke, Stuttgart, 655 pages. 1207:David Barthelmy (2022-10-10). 1: 270:Transparent to subtranslucent 958:. Further localities are in 771:with the lattice parameters 622:with the lattice parameters 379:with the chemical formula Cu 187:Emerald green to apple green 1760:Minerals in space group 139 1633:"Localities for Torbernite" 1514:A. J. Locock, P. C. Burns: 1147:A. J. Locock, P. C. Burns: 1776: 1360:Doklady Akademii Nauk SSSR 1318:"Entdeckung von Torbernit" 375:, is a relatively common 29: 1209:"Torbernite Mineral Data" 1153:The Canadian Mineralogist 902:Occurrence and localities 692:= 25 %, Ross et al. 48: 463:Lythophylacium Bornianum 30:Not to be confused with 1688:. rruff.geo.arizona.edu 1673:. rruff.geo.arizona.edu 934:and, very rarely, with 673:, and metazeunerite, Cu 425:with the sum formula Cu 1557:Mineralogical Magazine 1476:Mineralogical Magazine 1273:Handbook of Mineralogy 1179:Mineralogical Magazine 1099: 915: 895:: 0.0312 kBq/g). 866: 858: 812: 745: 742:Entraygues-sur-TruyĂšre 718:Jahn-Teller distortion 645:and metatorbernite, Cu 608: 471:Abraham Gottlob Werner 450: 1750:Radioactive gemstones 1531:American Mineralogist 1381:American Mineralogist 1097: 909: 864: 854: 785: 735: 571: 448: 441:Etymology and history 343:Other characteristics 123:Strunz classification 1745:Radioactive minerals 1730:Uranium(VI) minerals 736:Metatorbernite from 560:, number 40.02a.13. 475:Torbern Olof Bergman 449:Torbern Olof Bergman 1755:Tetragonal minerals 1725:Copper(II) minerals 1604:Gauthierite, KPb·8H 1322:www.strahlen.org/tw 549:with system number 1735:Phosphate minerals 1100: 916: 867: 859: 813: 746: 609: 455:Johanngeorgenstadt 451: 285:Optical properties 217:Perfect; Distinct 81:Phosphate minerals 1550:A. F. Hallimond: 1469:A. F. Hallimond: 1337:, M. C. Nichols: 956:Thuringian Forest 948:Fichtel Mountains 830:X-ray diffraction 708:1 = 2.3 %). 564:Crystal structure 485:According to the 366: 365: 338:Decomposes before 328:Decomposes before 308:ÎŽ = 0.009 – 0.010 16:(Redirected from 1767: 1711: 1709: 1708: 1696: 1694: 1693: 1681: 1679: 1678: 1658: 1653:(German) and at 1647: 1641: 1640: 1629: 1623: 1600: 1594: 1575: 1569: 1548: 1542: 1512: 1506: 1505: 1498:"Metatorbernite" 1494: 1488: 1467: 1458: 1423: 1417: 1398: 1392: 1373: 1367: 1352: 1346: 1332: 1326: 1325: 1313: 1307: 1289: 1280: 1265: 1248: 1223: 1217: 1216: 1204: 1191: 1170: 1164: 1145: 1112:List of minerals 811: 807: 803: 799: 795: 791: 722:hydrogen bridges 607: 601: 595: 589: 583: 577: 371:, also known as 362: 350: 294:Refractive index 250:Vitreous; pearly 237: 93: 92:(repeating unit) 61:Katanga Province 53: 41: 21: 1775: 1774: 1770: 1769: 1768: 1766: 1765: 1764: 1715: 1714: 1706: 1704: 1699: 1691: 1689: 1684: 1676: 1674: 1669: 1666: 1661: 1651:Mineralienatlas 1648: 1644: 1631: 1630: 1626: 1607: 1601: 1597: 1576: 1572: 1549: 1545: 1527: 1523: 1519: 1513: 1509: 1496: 1495: 1491: 1483:(82), 326–339 ( 1468: 1461: 1442: 1438: 1434: 1430: 1424: 1420: 1399: 1395: 1374: 1370: 1353: 1349: 1333: 1329: 1315: 1314: 1310: 1290: 1283: 1266: 1251: 1224: 1220: 1206: 1205: 1194: 1171: 1167: 1146: 1129: 1125: 1108: 1092: 952:Bavarian Forest 910:Paragenisis of 904: 881: 872: 856: 849: 809: 805: 801: 797: 793: 787: 759: 755: 751: 730: 684: 680: 676: 672: 668: 664: 656: 652: 648: 644: 640: 636: 603: 597: 591: 585: 579: 573: 566: 535:uranocircite II 496: 493: : RO 492: 483: 443: 436: 432: 428: 390: 386: 382: 235: 152:: (4/m 2/m 2/m) 148: 107: 103: 99: 91: 90: 67: 39: 28: 23: 22: 15: 12: 11: 5: 1773: 1771: 1763: 1762: 1757: 1752: 1747: 1742: 1737: 1732: 1727: 1717: 1716: 1713: 1712: 1697: 1682: 1665: 1664:External links 1662: 1660: 1659: 1642: 1624: 1605: 1595: 1589:(3), 252–282 ( 1570: 1543: 1525: 1521: 1517: 1507: 1489: 1459: 1440: 1436: 1432: 1428: 1418: 1393: 1368: 1347: 1327: 1308: 1291:F. Klockmann: 1281: 1249: 1218: 1213:webmineral.com 1192: 1165: 1126: 1124: 1121: 1120: 1119: 1114: 1107: 1104: 1091: 1088: 996:Czech Republic 924:metatorbernite 903: 900: 880: 877: 871: 868: 848: 845: 757: 753: 749: 729: 728:Metatorbernite 726: 682: 678: 674: 670: 666: 662: 654: 650: 646: 642: 638: 634: 565: 562: 558:metatorbernite 531:uranocircite I 511:kirchheimerite 494: 490: 482: 481:Classification 479: 459:Ignaz von Born 442: 439: 434: 430: 426: 423:metatorbernite 388: 384: 380: 364: 363: 344: 340: 339: 336: 330: 329: 326: 320: 319: 316: 310: 309: 306: 300: 299: 296: 290: 289: 286: 282: 281: 278: 272: 271: 268: 262: 261: 258: 252: 251: 248: 242: 241: 238: 229: 228: 225: 219: 218: 215: 209: 208: 205: 199: 198: 195: 189: 188: 185: 181: 180: 177: 171: 170: 169:Identification 166: 165: 160: 154: 153: 145: 139: 138: 135: 133:Crystal system 129: 128: 125: 119: 118: 115: 109: 108: 105: 101: 97: 94: 84: 83: 78: 74: 73: 69: 68: 54: 46: 45: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 1772: 1761: 1758: 1756: 1753: 1751: 1748: 1746: 1743: 1741: 1738: 1736: 1733: 1731: 1728: 1726: 1723: 1722: 1720: 1702: 1698: 1687: 1683: 1672: 1668: 1667: 1663: 1656: 1652: 1646: 1643: 1638: 1634: 1628: 1625: 1621: 1617: 1613: 1609: 1599: 1596: 1592: 1588: 1584: 1580: 1574: 1571: 1567: 1564:(89), 43–47 ( 1563: 1559: 1558: 1553: 1547: 1544: 1540: 1536: 1532: 1528: 1511: 1508: 1503: 1499: 1493: 1490: 1486: 1482: 1478: 1477: 1472: 1466: 1464: 1460: 1456: 1452: 1448: 1444: 1422: 1419: 1415: 1411: 1407: 1403: 1397: 1394: 1390: 1387:, 1603–1621 ( 1386: 1382: 1378: 1372: 1369: 1365: 1361: 1357: 1351: 1348: 1345:PDF 1.82 MB]) 1344: 1340: 1336: 1331: 1328: 1323: 1319: 1312: 1309: 1306: 1305:3-432-82986-8 1302: 1298: 1294: 1288: 1286: 1282: 1278: 1274: 1270: 1264: 1262: 1260: 1258: 1256: 1254: 1250: 1247: 1246:3-510-65188-X 1243: 1239: 1235: 1231: 1227: 1222: 1219: 1214: 1210: 1203: 1201: 1199: 1197: 1193: 1189: 1185: 1181: 1180: 1175: 1169: 1166: 1162: 1158: 1154: 1150: 1144: 1142: 1140: 1138: 1136: 1134: 1132: 1128: 1122: 1118: 1115: 1113: 1110: 1109: 1105: 1103: 1096: 1089: 1087: 1085: 1081: 1077: 1073: 1069: 1065: 1061: 1057: 1053: 1049: 1045: 1041: 1037: 1033: 1029: 1025: 1021: 1017: 1013: 1009: 1005: 1001: 997: 993: 989: 985: 981: 977: 973: 969: 965: 961: 957: 953: 949: 945: 944:Ore Mountains 939: 937: 933: 929: 925: 921: 913: 908: 901: 899: 896: 894: 890: 886: 878: 876: 869: 863: 853: 846: 844: 842: 838: 833: 831: 827: 822: 819:-axis in the 818: 790: 784: 780: 778: 774: 770: 766: 761: 743: 739: 738:Margabal Mine 734: 727: 725: 723: 719: 714: 713:isostructural 709: 707: 703: 699: 695: 691: 689: 661:zeunerite, Cu 660: 631: 629: 625: 621: 617: 614: 606: 600: 594: 588: 582: 576: 570: 563: 561: 559: 554: 552: 548: 544: 543:xiangjiangite 540: 536: 532: 528: 524: 523:nováčekite-II 520: 516: 512: 508: 504: 500: 488: 480: 478: 477:(1735–1784). 476: 472: 468: 464: 460: 456: 447: 440: 438: 424: 420: 416: 412: 408: 405: 402: 398: 394: 378: 374: 370: 361: 357: 353: 349: 345: 341: 337: 335: 331: 327: 325: 324:Melting point 321: 317: 315: 311: 307: 305: 304:Birefringence 301: 297: 295: 291: 287: 283: 279: 277: 273: 269: 267: 263: 259: 257: 253: 249: 247: 243: 239: 234: 230: 226: 224: 220: 216: 214: 210: 206: 204: 200: 196: 194: 193:Crystal habit 190: 186: 182: 178: 176: 172: 167: 164: 161: 159: 155: 151: 146: 144: 143:Crystal class 140: 136: 134: 130: 126: 124: 120: 116: 114: 110: 95: 89: 85: 82: 79: 75: 70: 66: 62: 58: 52: 47: 42: 37: 33: 19: 1705:. Retrieved 1690:. Retrieved 1675:. Retrieved 1645: 1636: 1627: 1615: 1611: 1603: 1598: 1586: 1582: 1578: 1577:K. Walenta: 1573: 1561: 1555: 1551: 1546: 1534: 1530: 1515: 1510: 1501: 1492: 1480: 1474: 1470: 1450: 1446: 1426: 1421: 1409: 1405: 1401: 1396: 1384: 1380: 1376: 1371: 1363: 1359: 1355: 1350: 1338: 1335:E. H. Nickel 1330: 1321: 1311: 1296: 1292: 1272: 1268: 1237: 1233: 1230:E. H. Nickel 1226:K. H. Strunz 1221: 1212: 1183: 1177: 1173: 1172:L. N. Warr: 1168: 1156: 1152: 1148: 1101: 1064:South Africa 940: 917: 897: 882: 873: 837:Kurt Walenta 834: 826:chernikovite 816: 814: 776: 772: 768: 764: 762: 747: 710: 705: 701: 697: 693: 687: 632: 627: 623: 619: 615: 610: 555: 550: 539:uranospinite 519:nováčekite-I 515:metarauchite 484: 466: 462: 461:in his work 452: 372: 368: 367: 288:Uniaxial (−) 175:Formula mass 162: 1618:, 129–141 ( 1537:, 240–244 ( 1455:PDF 85.1 kB 1453:, 701–702 ( 1389:PDF 1126 kB 1316:T. Witzke. 1161:PDF 2500 kB 1159:, 489–502 ( 1090:Precautions 1068:Switzerland 936:gauthierite 885:radioactive 613:space group 503:heinrichite 409:, found in 393:radioactive 352:Radioactive 314:Pleochroism 266:Diaphaneity 158:Space group 32:Tobermorite 1719:Categories 1707:2022-10-10 1692:2022-10-10 1677:2022-10-10 1657:(English). 1637:mindat.org 1566:PDF 228 kB 1539:PDF 408 kB 1502:mindat.org 1485:PDF 559 kB 1414:PDF 391 kB 1269:Torbernite 1188:PDF 320 kB 1123:References 1076:Uzbekistan 1072:Tajikistan 1024:Madagascar 870:Morphology 847:Properties 821:directions 798:phosphorus 587:phosphorus 391:. It is a 373:chalcolite 369:Torbernite 334:Fusibility 260:Pale green 233:Mohs scale 150:H-M symbol 137:Tetragonal 113:IMA symbol 44:Torbernite 1277:PDF 63 kB 1186:291–320 ( 964:Australia 960:Argentina 932:zeunerite 928:uraninite 893:potassium 659:arsenates 547:zeunerite 507:kahlerite 419:dehydrate 407:phosphate 356:Poisonous 36:Torbanite 18:Tobernite 1740:Hydrates 1106:See also 1082:and the 1056:Slovenia 1052:Slovakia 1044:Portugal 920:autunite 912:kasolite 824:mineral 810:hydrogen 605:hydrogen 527:salĂ©eite 499:autunite 415:autunite 411:granites 397:hydrated 236:hardness 223:Fracture 213:Cleavage 207:Rare on 203:Twinning 77:Category 1620:Weblink 1366:, 87–89 1048:Romania 1032:Namibia 1012:Ireland 976:Bolivia 972:Belgium 968:Austria 841:zeolite 789:uranium 575:uranium 551:8.EB.05 377:mineral 318:Visible 276:Density 227:Brittle 127:8.EB.05 88:Formula 72:General 57:Kolwezi 1655:Mindat 1614:2017, 1591:online 1585:1964, 1560:1920, 1533:2003, 1479:1916, 1449:1996, 1408:1993, 1383:1964, 1362:1960, 1303:  1295:1978, 1244:  1236:2001, 1182:2021, 1155:2003, 1040:Poland 1036:Norway 1028:Mexico 1004:France 984:Canada 980:Brasil 802:oxygen 794:copper 593:oxygen 581:copper 404:uranyl 401:copper 399:green 256:Streak 246:Luster 163:I4/mmm 1412:1–7 ( 1060:Spain 1020:Japan 1016:Italy 1008:Gabon 992:China 988:Chile 806:water 599:water 467:ibid. 240:2–2.5 184:Color 1610:In: 1581:In: 1554:In: 1529:In: 1473:In: 1445:In: 1439:·8(H 1404:In: 1379:In: 1358:In: 1301:ISBN 1271:In: 1242:ISBN 1176:In: 1151:In: 545:and 354:and 1451:211 1410:205 1364:131 1022:, 620:mmm 421:to 117:Tor 34:or 1721:: 1635:. 1616:20 1562:19 1535:88 1526:11 1524:O) 1520:(H 1500:. 1481:17 1462:^ 1457:) 1443:O) 1431:PO 1385:49 1341:( 1320:. 1297:16 1284:^ 1252:^ 1232:: 1228:, 1211:. 1195:^ 1190:) 1184:85 1157:41 1130:^ 1086:. 1084:US 1080:UK 1078:, 1074:, 1070:, 1066:, 1062:, 1058:, 1054:, 1050:, 1046:, 1042:, 1038:, 1034:, 1030:, 1026:, 1018:, 1014:, 1010:, 1006:, 1002:, 998:, 994:, 990:, 986:, 982:, 978:, 974:, 970:, 966:, 962:, 954:, 950:, 938:. 930:, 926:, 922:, 889:Bq 808:, 804:, 800:, 796:, 792:, 767:4/ 756:O) 752:(H 740:, 724:. 681:O) 677:(H 671:12 669:O) 665:(H 653:O) 649:(H 643:12 641:O) 637:(H 618:4/ 602:, 596:, 590:, 584:, 578:, 553:. 541:, 537:, 533:, 529:, 525:, 521:, 517:, 513:, 509:, 505:, 501:, 437:. 433:O) 429:(H 395:, 389:12 387:O) 383:(H 106:12 104:O) 100:(H 96:Cu 63:, 59:, 1710:. 1695:. 1680:. 1622:) 1606:2 1593:) 1587:9 1568:) 1541:) 1522:2 1518:2 1487:) 1441:2 1437:2 1435:) 1433:4 1429:2 1416:) 1391:) 1324:. 1279:) 1238:9 1215:. 1163:) 817:a 777:c 773:a 769:n 765:P 758:8 754:2 750:2 706:R 702:R 698:R 694:R 690:1 688:R 683:8 679:2 675:2 667:2 663:2 655:8 651:2 647:2 639:2 635:2 628:c 624:a 616:I 495:4 491:2 435:8 431:2 427:2 385:2 381:2 102:2 98:2 38:. 20:)

Index

Tobernite
Tobermorite
Torbanite

Kolwezi
Katanga Province
Democratic Republic of the Congo
Phosphate minerals
Formula
IMA symbol
Strunz classification
Crystal system
Crystal class
H-M symbol
Space group
Formula mass
Crystal habit
Twinning
Cleavage
Fracture
Mohs scale
Luster
Streak
Diaphaneity
Density
Refractive index
Birefringence
Pleochroism
Melting point
Fusibility

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