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Malachite Mineral Data + |
General Malachite Information |
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| Cu2(CO3)(OH)2 | |||
| Molecular Weight = 221.12 gm | |||
| Copper 57.48 % Cu 71.95 % CuO | |||
| Hydrogen 0.91 % H 8.15 % H2O | |||
| Carbon 5.43 % C 19.90 % CO2 | |||
| Oxygen 36.18 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Cu2(CO3)(OH)2 | |||
| Secondary mineral in the oxidized zones of copper ore deposits. | |||
| Valid Species (Pre-IMA) Prehistoric | |||
| Nizhne-Taglisk, Ural Mountains, Russia. Link to MinDat.org Location Data. | |||
| From the Greek, malache, - "mallow" in reference to green leaf color. | |||
| ICSD 100150 | |||
| PDF 41-1390 | |||
Malachite Image | |||
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Malachite Crystallography |
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| a:b:c =0.7935:1:0.2705 | |||
| a = 9.502, b = 11.974, c = 3.24, Z = 4; beta = 98.75° V = 364.35 Den(Calc)= 4.03 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a | |||
| By Intensity(I/Io): 2.857(1), 3.693(0.85), 5.055(0.75), | |||
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Physical Properties of Malachite |
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| [201] Perfect, [010] Fair | |||
| Green, Dark green, Blackish green. | |||
| 3.6 - 4, Average = 3.8 | |||
| Translucent to subtranslucent to opaque | |||
| Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | |||
| Botryoidal - "Grape-like" rounded forms (e.g.. malachite). | |||
| Massive - Fibrous - Distinctly fibrous fine-grained forms. | |||
| Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite). | |||
| 3.5-4 - Copper Penny-Fluorite | |||
| None. | |||
| Vitreous - Silky | |||
| light green | |||
Optical Properties of Malachite |
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| CI meas= -0.114 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.051 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2017,KPDmeas= 0.2139,KC= 0.192 |
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| Biaxial (-), a=1.655, b=1.875, g=1.909, bire=0.2540, 2V(Calc)=38, 2V(Meas)=43. Dispersion relatively weak. | |||
| nearly colorless. | |||
| yellowish green. | |||
| deep green. | |||
Calculated Properties of Malachite |
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relectron=3.86 gm/cc |
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| Fermion Index = 0.00077 Boson Index = 0.99923 |
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PEMalachite = 25.34 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Malachite is Not Radioactive |
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Malachite Classification |
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| 16a.3.2.1 (16a)Carbonates - Hydroxyl or Halogen | |||
| (16a.3)where (A B)2 (XO3) Zq | |||
| (16a.3.2)Malachite Group | |||
| V/C.01-20 V - Nitrates, Carbonates and Borates | |||
| V/C - Waterfree carbonates with unfamiliar anions | |||
| V/C.01 - Azurite - Rosasite group and related compounds | |||
Other Malachite Information |
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| NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Mason68) | |||
| Links to other databases for Malachite : 1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Applied Mineralogy 4 -Athena 5 - CalTech Mineral Spectroscopy 6 - Crocoite.com Mineral Locations 7 - EUROmin Project 8 -Earthprints Interactive Photo Gallary 9 - Franklin Minerals(Dunn) 10 - Franklin Minerals(Palache) 11 - Glendale Community College 12 -Google Images 13 -Google Scholar 14 -Handbook of Mineralogy (UofA) 15 - HyperPhysics 16 -MinDAT 17 -MinMax(Deutsch) 18 -MinMax(English) 19 - Mineral and Gemstone Kingdom 20 -Mineralienatlas (Deutsch) 21 - Minerals of Wisconsin 22 -NSDL Reciprocal Net (JAVA) 23 - Philatelic Mineralogy 24 -QUT Mineral Atlas 25 - Scandinavian mineral gallery 26 - Tradeshop.com - The Rainbow of Gems 27 - University of Manchester - Mineral Structure 28 -University of Minnesota 29 - WWW-MINCRYST 30 - YupRocks 31 -theimage 32 -École des Mines de Paris Search for Malachite using: Visit our Advertisers for Malachite : Translate Malachite Mineral Data : Ask about Malachite here : Print or Cut-and-Paste your Malachite Specimen Label here :
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