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Xanthiosite Mineral Data
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General Xanthiosite Information
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 Chemical Formula: |
Ni3(AsO4)2 |
| Composition: |
Molecular Weight = 453.91 gm |
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Nickel 38.79 % Ni 49.36 % NiO |
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Arsenic 33.01 % As 50.64 % As2O5 |
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Oxygen 28.20 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ni3(AsO4)2 |
| Environment: |
Secondary mineral in hydrothermal Ni�As�U ore deposits. |
| IMA Status: |
Valid Species (Pre-IMA) 1869 |
| Locality: |
Johanngeorgenstadt, Saxony, Germany. Link to MinDat.org Location Data. |
| Name Origin: |
Named from the Greek for yellow and sulfur, in allusion to its distinctive sulfur-yellow color. |
| Name Pronunciation: |
Xanthiosite + Pronunciation  |
| Synonym: |
ICSD 63709 |
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PDF 18-874 |
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Xanthiosite Crystallography
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| Axial Ratios: |
a:b:c =1.0655:1:0.6038 |
| Cell Dimensions: |
a = 10.174, b = 9.548, c = 5.766, Z = 4; beta = 92.98° V = 559.36 Den(Calc)= 5.39 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a |
| X Ray Diffraction: |
By Intensity(I/Io): 2.53(1), 2.75(0.8), 3.46(0.8), |
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Physical Properties of Xanthiosite
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| Color: |
Golden yellow. |
| Density: |
5.37 - 5.47, Average = 5.42 |
| Hardness: |
4 - Fluorite |
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Optical Properties of Xanthiosite
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| Optical Data: |
NCalc= 1.91 - from Gladstone-Dale relationship (KC = 0.1689) where Ncalc=Dcalc*KC+1
NCalc= 1.92 - from Gladstone-Dale relationship (KC = 0.1689) where Ncalc=Dmeas*KC+1
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Calculated Properties of Xanthiosite
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| Electron Density: |
Bulk Density (Electron Density)=5.08 gm/cc
note: Specific Gravity of Xanthiosite =5.39 gm/cc.
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| Fermion Index: |
Fermion Index = 0.004518596
Boson Index = 0.995481404 |
| Photoelectric: |
PEXanthiosite = 38.62 barns/electron
U=PEXanthiosite x rElectron Density= 196.28 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Xanthiosite is Not Radioactive |
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Xanthiosite Classification
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| Dana Class: |
38.03.02.01 (38)Anhydrous Phosphates, etc |
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(38.03)(A+ B++)3 (XO4)2 |
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(38.03.02)Dana Group |
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38.03.02.01 Xanthiosite Ni3(AsO4)2 P 21/a 2/m |
| Strunz Class: |
08.AB.25 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.A - Phosphates, etc. without additional anions, without H2O |
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08.AB -With medium-sized cations |
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08.AB.25 Xanthiosite Ni3(AsO4)2 P 21/a 2/m |
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Other Xanthiosite Information
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| References: |
NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other databases for Xanthiosite :
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 Xanthiosite Specimen Label here :
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Xanthiosite
Ni3(AsO4)2
Dana No: 38.03.02.01 Strunz No: 08.AB.25
Locality:
Notes:
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