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Clinoatacamite Mineral Data |
General Clinoatacamite Information |
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Cu2(OH)3Cl | ||
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Molecular Weight = 213.57 gm | ||
Copper 59.51 % Cu 74.49 % CuO | |||
Hydrogen 1.42 % H 12.65 % H2O | |||
Chlorine 16.60 % Cl 16.60 % Cl | |||
- % Cl -3.75 % -O=Cl2 | |||
Oxygen 22.47 % O | |||
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100.00 % 100.00 % = TOTAL OXIDE | |||
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Cu2(OH)3Cl | ||
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Secondary alteration product of copper ores. | ||
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Approved IMA 1996 (Dana # Added) | ||
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Chuquicamata, Chile. Link to MinDat.org Location Data. | ||
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For the relationship to atacamite and paratacamite. Atacamite is named after the Atacam desert province in northern Chile. | ||
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ICSD 82485 | ||
IMA1993-060 | |||
PDF 25-1427 | |||
Clinoatacamite Image | |||
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Clinoatacamite Crystallography |
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a:b:c =0.9035:1:1.336 | ||
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a = 6.157, b = 6.814, c = 9.104, Z = 4; beta = 99.65° V = 376.54 Den(Calc)= 3.77 | ||
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Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/n | ||
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By Intensity(I/Io): 5.47(1), 2.742(0.7), 2.767(0.6), | ||
Physical Properties of Clinoatacamite |
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{012} Perfect | ||
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Green, Dark greenish black, Greenish blue. | ||
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3.71 | ||
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Transparent to translucent | ||
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Brittle - Generally displayed by glasses and most non-metallic minerals. | ||
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Crystalline - Fine - Occurs as well-formed fine sized crystals. | ||
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3 - Calcite | ||
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Non-fluorescent. | ||
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Adamantine | ||
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greenish white | ||
Optical Properties of Clinoatacamite |
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CI meas= -0.036 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.019 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2263,KPDmeas= 0.23,KC= 0.2221 Ncalc = 1.82 - 1.84 |
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Biaxial (-), a=1.83, b=1.85, g=1.88, bire=0.0500, 2V(Calc)=80, 2V(Meas)=75. Dispersion strong, r < v. | ||
Calculated Properties of Clinoatacamite |
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Bulk Density (Electron Density)=3.60 gm/cc note: Specific Gravity of Clinoatacamite =3.77 gm/cc. |
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Fermion Index = 0.0001100017 Boson Index = 0.9998899983 |
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PEClinoatacamite = 27.37 barns/electron U=PEClinoatacamite x rElectron Density= 98.57 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Clinoatacamite is Not Radioactive |
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Clinoatacamite Classification |
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10.01.02.02 (10)Oxyhalides and Hydroxyhalides | ||
(10.01)where (A)2 (O,OH)3 Xq | |||
(10.01.02)Paratacamite Group | |||
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03.DA.10b 03 - HALIDES | ||
03.D - Oxyhalides, Hydroxyhalides and Related Double Halides | |||
03.DA -With Cu, etc., without Pb | |||
Other Clinoatacamite Information |
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NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.81,p1282,1996) OPTIC PROP.(MinRec) | ||
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Links to other databases for Clinoatacamite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - Handbook of Mineralogy (MinSocAm) 7 - Handbook of Mineralogy (UofA) 8 - MinDAT 9 - Mineralienatlas (Deutsch) 10 - Online Mineral Museum 11 - QUT Mineral Atlas 12 - Ruff.Info 13 - WWW-MINCRYST Search for Clinoatacamite using: Visit our Advertisers for Clinoatacamite : Ask about Clinoatacamite here : Print or Cut-and-Paste your Clinoatacamite Specimen Label here :
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