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Malachite Mineral Data |
General Malachite Information |
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Cu2(CO3)(OH)2 | ||
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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 | |||
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100.00 % 100.00 % = TOTAL OXIDE | |||
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Cu2(CO3)(OH)2 | ||
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Secondary mineral in the oxidized zones of copper ore deposits. | ||
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Valid Species (Pre-IMA) Prehistoric | ||
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Nizhne-Taglisk, Ural Mountains, Russia. Link to MinDat.org Location Data. | ||
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From the Greek, malache, - "mallow" in reference to green leaf color. | ||
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Malachite + Pronunciation ![]() |
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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 | ||
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a = 9.502, b = 11.974, c = 3.24, Z = 4; beta = 98.75° V = 364.35 Den(Calc)= 4.03 | ||
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Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a | ||
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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 | ||
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Green, Dark green, Blackish green. | ||
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3.6 - 4, Average = 3.8 | ||
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Translucent to subtranslucent to opaque | ||
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Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | ||
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Botryoidal - "Grape-like" rounded forms (e.g.. malachite). | ||
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Massive - Fibrous - Distinctly fibrous fine-grained forms. | ||
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Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite). | ||
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3.5-4 - Copper Penny-Fluorite | ||
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Non-fluorescent. | ||
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Vitreous - Silky | ||
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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 Ncalc = 1.69 - 1.77 |
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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. | ||
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nearly colorless. | ||
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yellowish green. | ||
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deep green. | ||
Calculated Properties of Malachite |
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Bulk Density (Electron Density)=3.86 gm/cc note: Specific Gravity of Malachite =4.03 gm/cc. |
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Fermion Index = 0.0007725449 Boson Index = 0.9992274551 |
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PEMalachite = 25.34 barns/electron U=PEMalachite x rElectron Density= 97.90 barns/cc. |
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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.03.02.01 (16a)Carbonates - Hydroxyl or Halogen | ||
(16a.03)where (A B)2 (XO3) Zq | |||
(16a.03.02)Malachite Group | |||
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05.BA.10 05 - CARBONATES (NITRATES) | ||
05.B - Carbonates with additional anions, without H2O | |||
05.BA -With Cu, Co, Ni, Zn, Mg, Mn | |||
Other Malachite Information |
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NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Mason68) | ||
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Links to other databases for Malachite : 1 - Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Athena 4 - CalTech Mineral Spectroscopy 5 - EUROmin Project 6 - Earthprints Interactive Photo Gallary 7 - Ecole des Mines de Paris 8 - Franklin Minerals(Dunn) 9 - Franklin Minerals(Palache) 10 - GeoScienceWorld 11 - Glendale Community College 12 - Google Images 13 - Google Scholar 14 - Handbook of Mineralogy (MinSocAm) 15 - Handbook of Mineralogy (UofA) 16 - HyperPhysics 17 - MinDAT 18 - Mineral and Gemstone Kingdom 19 - Mineralienatlas (Deutsch) 20 - NSDL Reciprocal Net (JAVA) 21 - Online Mineral Museum 22 - Philatelic Mineralogy 23 - QUT Mineral Atlas 24 - Ruff.Info 25 - Scandinavian mineral gallery 26 - Tradeshop.com - The Rainbow of Gems 27 - WWW-MINCRYST 28 - YupRocks 29 - theimage Search for Malachite using: Visit our Advertisers for Malachite : Ask about Malachite here : Print or Cut-and-Paste your Malachite Specimen Label here :
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