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Paratacamite Mineral Data + |
General Paratacamite Information |
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| (Cu,Zn)2(OH)3Cl | |||
| Molecular Weight = 214.49 gm | |||
| Zinc 15.24 % Zn 18.97 % ZnO | |||
| Copper 44.44 % Cu 55.63 % CuO | |||
| Hydrogen 1.41 % H 12.60 % H2O | |||
| Chlorine 16.53 % Cl 16.53 % Cl | |||
| - % Cl -3.73 % -O=Cl2 | |||
| Oxygen 22.38 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Cu1.5Zn0.5(OH)3Cl | |||
| Alteration of copper minerals by chloride waters under cold conditions. | |||
| Valid Species (Pre-IMA) 1873 | |||
| Generosa and Herminia mines, Sierra Gorda, Chile. Link to MinDat.org Location Data. | |||
| Named for the dimorphous relationship with atacamite. | |||
| ICSD 64956 | |||
| PDF 25-325 | |||
Paratacamite Image | |||
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Paratacamite Crystallography |
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| a:c = 1:1.02834 | |||
| a = 13.654, c = 14.041, Z = 24; V = 2,266.98 Den(Calc)= 3.77 | |||
| Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3 | |||
| By Intensity(I/Io): 5.44(1), 2.27(0.8), 2.74(0.6),2.76(0.6), 2.78(0.5), 1.71(0.5), 2.9(0.3), | |||
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Physical Properties of Paratacamite |
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| [1011] Good | |||
| Greenish black, Dark green. | |||
| 3.74 | |||
| Translucent to Subopaque | |||
| Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments. | |||
| Encrustations - Forms crust-like aggregates on matrix. | |||
| Massive - Granular - Common texture observed in granite and other igneous rock. | |||
| Rhombohedral Crystals - Occurs as well-formed crystals showing rhobohedral crystals. | |||
| 3 - Calcite | |||
| Vitreous - Dull | |||
| light green | |||
Optical Properties of Paratacamite |
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| none. | |||
| none. | |||
| CI meas= -0.029 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.021 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2243,KPDmeas= 0.2261,KC= 0.2196 |
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| Uniaxial (+), w=1.843, e=1.848, bire=0.0050. | |||
Calculated Properties of Paratacamite |
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relectron=3.60 gm/cc |
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| Fermion Index = 0.00635 Boson Index = 0.99365 |
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PEParatacamite = 28.34 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Paratacamite is Not Radioactive |
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Paratacamite Classification |
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| 10.1.2.1 (10)Oxyhalides and Hydroxyhalides | |||
| (10.1)where (A)2 (O,OH)3 Xq | |||
| (10.1.2)Dana Group | |||
| III/D.01-55 III - Halogenides | |||
| III/D - Oxi-halogenides with Mg - Mn - Cu - Zn - Sn | |||
| III/D.01 - Atacamite series, Korshunovskite - Anthonyite | |||
Other Paratacamite Information |
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| NAME( Dana8) PHYS. PROP.(AntBidBlaNic3) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Paratacamite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (MinSocAm) 8 - Handbook of Mineralogy (UofA) 9 - MinDAT 10 - MinMax(Deutsch) 11 - MinMax(English) 12 - Mineralienatlas (Deutsch) 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - WWW-MINCRYST Search for Paratacamite using: Visit our Advertisers for Paratacamite : 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 Paratacamite Mineral Data : Ask about Paratacamite here : Print or Cut-and-Paste your Paratacamite Specimen Label here :
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