Malachite Mineral Data + 
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- 16a.3.2.1 Malachite Cu2(CO3)(OH)2 P 21/a 2/m
- 16a.3.2.2 Nullaginite Ni2(CO3)(OH)2 P 21/m,P 21 Mono
- 16a.3.2.3 Pokrovskite Mg2(CO3)(OH)2·0.5(H2O) P 21/a 2/m
- V/C.01-10 Azurite Cu3(CO3)2(OH)2 P 21/a 2/m
- V/C.01-20 Malachite Cu2(CO3)(OH)2 P 21/a 2/m
- V/C.01-25 Georgeite Cu5(CO3)3(OH)4·6(H2O) None
- V/C.01-30 Pokrovskite Mg2(CO3)(OH)2·0.5(H2O) P 21/a 2/m
- V/C.01-40 Mcguinnessite (Mg,Cu)2(CO3)(OH)2 P 2/a or P 21/a 2/m
- V/C.01-50 Kolwezite (Cu,Co)2(CO3)(OH)2 P1 or P1 Tri
- V/C.01-60 Glaukosphaerite (Cu,Ni)2(CO3)(OH)2 P 21/a 2/m
- V/C.01-70 Nullaginite Ni2(CO3)(OH)2 P 21/m,P 21 Mono
- V/C.01-80 Rosasite (Cu,Zn)2(CO3)(OH)2 P 21/a 2/m
- V/C.01-90 Zincrosasite (Zn,Cu)2(CO3)(OH)2 P 21/a 2/m
- V/C.01-100 Hydrozincite Zn5(CO3)2(OH)6 C 2/m 2/m
- V/C.01-105 Brianyoungite Zn3(CO3,SO4)(OH)4 C 2/m 2/m
- V/C.01-110 Aurichalcite (Zn,Cu)5(CO3)2(OH)6 P 21/m 2/m
- V/C.01-120 Loseyite (Mn,Zn)7(CO3)2(OH)10 A2/a 2/m
- V/C.01-130 Sclarite (Zn,Mg,Mn)4Zn3(CO3)2(OH)10 A2/a 2/m
General Malachite Information |
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 Chemical Formula: |
Cu2(CO3)(OH)2 | ||
| Composition: |
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 | |||
| Empirical Formula: |
Cu2(CO3)(OH)2 | ||
| Environment: |
Secondary mineral in the oxidized zones of copper ore deposits. | ||
| IMA Status: |
Valid Species (Pre-IMA) Prehistoric | ||
| Locality: |
Nizhne-Taglisk, Ural Mountains, Russia. Link to MinDat.org Location Data. | ||
| Name Origin: |
From the Greek, malache, - "mallow" in reference to green leaf color. | ||
| Synonym: |
ICSD 100150 | ||
| PDF 41-1390 | |||
Malachite Image | |||
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Malachite Crystallography |
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| Axial Ratios: |
a:b:c =0.7935:1:0.2705 | ||
| Cell Dimensions: |
a = 9.502, b = 11.974, c = 3.24, Z = 4; beta = 98.75° V = 364.35 Den(Calc)= 4.03 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.857(1), 3.693(0.85), 5.055(0.75), | ||
| Forms:
Mouse |
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Crystal Structure:
Mouse |
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Physical Properties of Malachite |
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| Cleavage: |
[201] Perfect, [010] Fair | ||
| Color: |
Green, Dark green, Blackish green. | ||
| Density: |
3.6 - 4, Average = 3.8 | ||
| Diaphaniety: |
Translucent to subtranslucent to opaque | ||
| Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | ||
| Habit: |
Botryoidal - "Grape-like" rounded forms (e.g.. malachite). | ||
| Habit: |
Massive - Fibrous - Distinctly fibrous fine-grained forms. | ||
| Habit: |
Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite). | ||
| Hardness: |
3.5-4 - Copper Penny-Fluorite | ||
| Luminescence: |
None. | ||
| Luster: |
Vitreous - Silky | ||
| Streak: |
light green | ||
Optical Properties of Malachite |
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| Gladstone-Dale: |
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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| Optical Data: |
Biaxial (-), a=1.655, b=1.875, g=1.909, bire=0.2540, 2V(Calc)=38, 2V(Meas)=43. Dispersion relatively weak. | ||
| Pleochroism (x): |
nearly colorless. | ||
| Pleochroism (y): |
yellowish green. | ||
| Pleochroism (z): |
deep green. | ||
Calculated Properties of Malachite |
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| Electron Density: |
relectron=3.86 gm/cc |
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| Fermion Index |
Fermion Index = 0.00077 Boson Index = 0.99923 |
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| Photoelectric: |
PEMalachite = 25.34 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Malachite is Not Radioactive |
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Malachite Classification |
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| Dana Class: |
16a.3.2.1 (16a)Carbonates - Hydroxyl or Halogen | ||
| (16a.3)where (A B)2 (XO3) Zq | |||
| (16a.3.2)Malachite Group | |||
| Strunz Class: |
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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| References: |
NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Mason68) | ||
| See Also: |
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 : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals T G Fine Minerals Wrights Rock Shop Translate Malachite Mineral Data : Ask about Malachite here : Print or Cut-and-Paste your Malachite Specimen Label here :
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