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Aurichalcite Mineral Data + |
General Aurichalcite Information |
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| (Zn,Cu)5(CO3)2(OH)6 | |||
| Molecular Weight = 546.71 gm | |||
| Zinc 44.85 % Zn 55.83 % ZnO | |||
| Copper 14.53 % Cu 18.19 % CuO | |||
| Hydrogen 1.11 % H 9.89 % H2O | |||
| Carbon 4.39 % C 16.10 % CO2 | |||
| Oxygen 35.12 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Zn3.75Cu1.25(CO3)2(OH)6 | |||
| Secondary mineral in copper and zinc deposits. | |||
| Valid Species (Pre-IMA) 1839 | |||
| Salida, Chaffee Co., Colorado, USA. Link to MinDat.org Location Data. | |||
| Probably from the Greek oreichalchos, "mountain copper." | |||
| ICSD 75323 | |||
| PDF 17-743 | |||
Aurichalcite Image | |||
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Aurichalcite Crystallography |
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| a:b:c =2.1529:1:0.8241 | |||
| a = 13.82, b = 6.419, c = 5.29, Z = 2; beta = 101.04° V = 460.59 Den(Calc)= 3.94 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m | |||
| By Intensity(I/Io): 6.78(1), 2.61(0.8), 3.68(0.7), | |||
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Mouse |
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Physical Properties of Aurichalcite |
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| [010] Perfect | |||
| Pale green, Sky blue, Greenish blue. | |||
| 3.64 - 3.9, Average = 3.77 | |||
| Transparent | |||
| Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | |||
| Acicular - Occurs as needle-like crystals. | |||
| Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces. | |||
| Encrustations - Forms crust-like aggregates on matrix. | |||
| 2 - Gypsum | |||
| None. | |||
| Pearly | |||
| light blue | |||
Optical Properties of Aurichalcite |
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| CI meas= -0.013 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.031 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.181,KPDmeas= 0.1891,KC= 0.1867 |
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| Biaxial (-), a=1.655, b=1.74, g=1.744, bire=0.0890, 2V(Calc)=22, 2V(Meas)=1-4. Dispersion relatively strong. | |||
| colorless. | |||
| pale green. | |||
| pale green. | |||
Calculated Properties of Aurichalcite |
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relectron=3.62 gm/cc |
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| Fermion Index = 0.01904 Boson Index = 0.98096 |
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PEAurichalcite = 28.76 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Aurichalcite is Not Radioactive |
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Aurichalcite Classification |
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| 16a.4.2.1 (16a)Carbonates - Hydroxyl or Halogen | |||
| (16a.4)where (A B)5 (XO3)2 Zq | |||
| (16a.4.2)Dana Group | |||
| V/C.01-110 V - Nitrates, Carbonates and Borates | |||
| V/C - Waterfree carbonates with unfamiliar anions | |||
| V/C.01 - Azurite - Rosasite group and related compounds | |||
Other Aurichalcite Information |
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| NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32) | |||
| Links to other databases for Aurichalcite : 1 - Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Athena 4 - EUROmin Project 5 - Ecole des Mines de Paris 6 - Franklin Minerals(Dunn) 7 - Franklin Minerals(Palache) 8 - Glendale Community College 9 - Google Images 10 - Google Scholar 11 - Handbook of Mineralogy (MinSocAm) 12 - Handbook of Mineralogy (UofA) 13 - MinDAT 14 - MinMax(Deutsch) 15 - MinMax(English) 16 - Mineral and Gemstone Kingdom 17 - Mineralienatlas (Deutsch) 18 - Philatelic Mineralogy 19 - QUT Mineral Atlas 20 - Ruff.Info 21 - WWW-MINCRYST 22 - YupRocks Search for Aurichalcite using: Visit our Advertisers for Aurichalcite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich 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 The GeoZone Wrights Rock Shop Translate Aurichalcite Mineral Data : Ask about Aurichalcite here : Print or Cut-and-Paste your Aurichalcite Specimen Label here :
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