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Cobaltaustinite Mineral Data
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General Cobaltaustinite Information
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 Chemical Formula: |
CaCo(AsO4)(OH) |
| Composition: |
Molecular Weight = 254.94 gm |
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Calcium 15.72 % Ca 22.00 % CaO |
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Cobalt 23.12 % Co 29.39 % CoO |
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Arsenic 29.39 % As 45.08 % As2O5 |
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Hydrogen 0.40 % H 3.53 % H2O |
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Oxygen 31.38 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
CaCo(AsO4)(OH) |
| Environment: |
Rare secondary mineral in the oxidized zone of a copper deposit, an alteration product of arsenides. |
| IMA Status: |
Approved IMA 1988 |
| Locality: |
Dome Rock copper mine, about 40 km northwest of Mingary, South Australia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for its content of cobalt and similarity to austinite. |
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Cobaltaustinite Image |
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Images:
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Cobaltaustinite Crystallography
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| Axial Ratios: |
a:b:c =0.8324:1:0.768 |
| Cell Dimensions: |
a = 7.5, b = 9.01, c = 6.92, Z = 4; V = 467.62 Den(Calc)= 3.62 |
| Crystal System: |
Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: P 212121 |
| X Ray Diffraction: |
By Intensity(I/Io): 1.609(1), 3.159(1), 2.633(0.8), |
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Physical Properties of Cobaltaustinite
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| Cleavage: |
None |
| Color: |
Green. |
| Diaphaneity: |
Translucent |
| Hardness: |
4.5 - Between Fluorite and Apatite |
| Luster: |
Earthy (Dull) |
| Streak: |
light green |
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Optical Properties of Cobaltaustinite
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| Gladstone-Dale: |
CI calc= -0.186 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2181,KC= 0.1838
Ncalc = 1.67 |
| Optical Data: |
Biaxial (+), a=1.777, g=1.802, bire=0.0250 |
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Calculated Properties of Cobaltaustinite
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| Electron Density: |
Bulk Density (Electron Density)=3.44 gm/cc
note: Specific Gravity of Cobaltaustinite =3.62 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0003634419
Boson Index = 0.9996365581 |
| Photoelectric: |
PECobaltaustinite = 30.04 barns/electron
U=PECobaltaustinite x rElectron Density= 103.23 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cobaltaustinite is Not Radioactive |
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Cobaltaustinite Classification
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| Dana Class: |
41.05.01.08 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
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(41.05)where (A B)2 (XO4) Zq |
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(41.05.01)Adelite Group |
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41.05.01.01 Adelite CaMg(AsO4)(OH) P 212121 2 2 2 |
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41.05.01.02 Conichalcite CaCu(AsO4)(OH) P 212121 2 2 2 |
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41.05.01.03 Austinite CaZn(AsO4)(OH) P 212121 2 2 2 |
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41.05.01.04 Duftite-beta? PbCu(AsO4)(OH) P 212121 2 2 2 |
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41.05.01.05 Gabrielsonite PbFe(AsO4)(OH) P 21m mm2 |
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41.05.01.06 Tangeite CaCu(VO4)(OH) P 212121 2 2 2 |
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41.05.01.07 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 212121 2 2 2 |
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41.05.01.08 Cobaltaustinite CaCo(AsO4)(OH) P 212121 2 2 2 |
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41.05.01.09 Arsendescloizite PbZn(AsO4)(OH) P 212121 2 2 2 |
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41.05.01.10 Gottlobite! CaMg(VO4,AsO4)(OH) P 212121 2 2 2 |
| Strunz Class: |
08.BH.35 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.B - Phosphates, etc. with Additional Anions, without H2O |
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08.BH -With medium-sized and large cations, (OH,etc.):RO4 = 1:1 |
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08.BH.35 Austinite CaZn(AsO4)(OH) P 212121 2 2 2 |
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08.BH.35 Adelite CaMg(AsO4)(OH) P 212121 2 2 2 |
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08.BH.35 Arsendescloizite PbZn(AsO4)(OH) P 212121 2 2 2 |
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08.BH.35 Duftite-alpha PbCu(AsO4)(OH) P 212121 2 2 2 |
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08.BH.35 Duftite-beta? PbCu(AsO4)(OH) P 212121 2 2 2 |
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08.BH.35 Cobaltaustinite CaCo(AsO4)(OH) P 212121 2 2 2 |
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08.BH.35 Conichalcite CaCu(AsO4)(OH) P 212121 2 2 2 |
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08.BH.35 Gabrielsonite PbFe(AsO4)(OH) P 21m mm2 |
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08.BH.35 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 212121 2 2 2 |
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08.BH.35 Tangeite CaCu(VO4)(OH) P 212121 2 2 2 |
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08.BH.35 Gottlobite! CaMg(VO4,AsO4)(OH) P 212121 2 2 2 |
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Other Cobaltaustinite Information
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| References: |
NAME( AntBidBlaNic4) PHYS. PROP.(Am.Min.,Vol.74,p501,1989) OPTIC PROP.(Am.Min.,Vol.74,p501,1989) |
| See Also: |
Links to other databases for Cobaltaustinite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
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Print or Cut-and-Paste your Cobaltaustinite Specimen Label here :
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Cobaltaustinite
CaCo(AsO4)(OH)
Dana No: 41.05.01.08 Strunz No: 08.BH.35
Locality:
Notes:
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