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Cobaltkoritnigite Mineral Data
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General Cobaltkoritnigite Information
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 Chemical Formula: |
(Co,Zn)(AsO3OH)•(H2O) |
| Composition: |
Molecular Weight = 218.49 gm |
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Zinc 7.48 % Zn 9.31 % ZnO |
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Cobalt 20.23 % Co 25.72 % CoO |
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Arsenic 34.29 % As 52.60 % As2O5 |
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Hydrogen 1.38 % H 12.37 % H2O |
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Oxygen 36.61 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Co0.75Zn0.25(AsO3OH)•(H2O) |
| Environment: |
Weathering product of glaucodot. |
| IMA Status: |
Approved IMA 1981 |
| Locality: |
Old specimen from the Erzgebirge, Saxony, probably from the Schwarzenberg district, Germany. Link to MinDat.org Location Data. |
| Name Origin: |
Named for its relation to koritnigite and high cobalt content. |
| Synonym: |
Cobaltokoritnigite |
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ICSD 32025 |
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PDF 35-499 |
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Cobaltkoritnigite Image |
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Images:
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Cobaltkoritnigite Crystallography
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| Axial Ratios: |
a:b:c =0.5022:1:0.4213 |
| Cell Dimensions: |
a = 7.95, b = 15.83, c = 6.67, Z = 8; alpha = 90.9°, beta = 96.6°, gamma = 90° V = 833.74 Den(Calc)= 3.48 |
| Crystal System: |
Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 |
| X Ray Diffraction: |
By Intensity(I/Io): 7.94(1), 3.14(0.7), 3.82(0.5), |
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Physical Properties of Cobaltkoritnigite
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| Cleavage: |
{010} Perfect, {100} Good |
| Color: |
Dark pink, Purple red, Purple. |
| Diaphaneity: |
Transparent |
| Hardness: |
2-3 - Gypsum-Calcite |
| Luster: |
Vitreous (Glassy) |
| Streak: |
reddish white |
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Optical Properties of Cobaltkoritnigite
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| Gladstone-Dale: |
CI calc= -0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1934,KC= 0.188
Ncalc = 1.65 |
| Optical Data: |
Biaxial (+), a=1.646, b=1.668, g=1.705, bire=0.0590, 2V(Calc)=78, 2V(Meas)=78. |
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Calculated Properties of Cobaltkoritnigite
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| Electron Density: |
Bulk Density (Electron Density)=3.30 gm/cc
note: Specific Gravity of Cobaltkoritnigite =3.48 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0032454585
Boson Index = 0.9967545415 |
| Photoelectric: |
PECobaltkoritnigite = 34.15 barns/electron
U=PECobaltkoritnigite x rElectron Density= 112.87 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cobaltkoritnigite is Not Radioactive |
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Cobaltkoritnigite Classification
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| Dana Class: |
39.01.04.02 (39)Hydrated Acid Phosphates, etc |
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(39.01)A+ [HXO4] � x(H2O) |
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(39.01.04)Dana Group |
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39.01.04.01 Koritnigite ZnHAsO4•(H2O) P1 1 |
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39.01.04.02 Cobaltkoritnigite (Co,Zn)(AsO3OH)•(H2O) P1 1 |
| Strunz Class: |
08.CB.20 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.C - Phosphates without Additional Anions, with H2O |
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08.CB -With only medium-sized cations, RO4:H2O = 1:1 |
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08.CB.20 Cobaltkoritnigite (Co,Zn)(AsO3OH)•(H2O) P1 1 |
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08.CB.20 Koritnigite ZnHAsO4•(H2O) P1 1 |
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Other Cobaltkoritnigite Information
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| References: |
NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other databases for Cobaltkoritnigite :
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
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Cobaltkoritnigite
(Co,Zn)(AsO3OH)•(H2O)
Dana No: 39.01.04.02 Strunz No: 08.CB.20
Locality:
Notes:
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