Mineralogy Database

Xanthiosite Mineral Data

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General Xanthiosite Information

Help on Chemical  Formula: Chemical Formula: Ni3(AsO4)2
Help on Composition: Composition: Molecular Weight = 453.91 gm
   Nickel   38.79 %  Ni   49.36 % NiO
   Arsenic  33.01 %  As   50.64 % As2O5
   Oxygen   28.20 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ni3(AsO4)2
Help on Environment: Environment: Secondary mineral in hydrothermal Ni�As�U ore deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1869
Help on Locality: Locality: Johanngeorgenstadt, Saxony, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek for yellow and sulfur, in allusion to its distinctive sulfur-yellow color.
Help on Name Pronunciation: Name Pronunciation: Xanthiosite + Pronunciation Say XANTHIOSITE
Help on Synonym: Synonym: ICSD 63709
  PDF 18-874

Xanthiosite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0655:1:0.6038
Help on Cell Dimensions: Cell Dimensions: a = 10.174, b = 9.548, c = 5.766, Z = 4; beta = 92.98° V = 559.36 Den(Calc)= 5.39
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.53(1), 2.75(0.8), 3.46(0.8),

Physical Properties of Xanthiosite

Help on Color: Color: Golden yellow.
Help on Density: Density: 5.37 - 5.47, Average = 5.42
Help on Hardness: Hardness: 4 - Fluorite

Optical Properties of Xanthiosite

Help on Optical Data: 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

Calculated Properties of Xanthiosite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.08 gm/cc
note: Specific Gravity of Xanthiosite =5.39 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.004518596
Boson Index = 0.995481404
Help on Photoelectric: Photoelectric: PEXanthiosite = 38.62 barns/electron
U=PEXanthiosite x rElectron Density= 196.28 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Xanthiosite is Not Radioactive

Xanthiosite Classification

Help on  Dana Class: Dana Class: (38)Anhydrous Phosphates, etc
  (38.03)(A+ B++)3 (XO4)2
  (38.03.02)Dana Group Xanthiosite Ni3(AsO4)2 P 21/a 2/m
Help on  Strunz Class: Strunz Class: 08.AB.25 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AB -With medium-sized cations
08.AB.25 Xanthiosite Ni3(AsO4)2 P 21/a 2/m

Other Xanthiosite Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: 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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Dana No: Strunz No: 08.AB.25