Nickeltalmessite Mineral Data

Nickeltalmessite Mineral Data
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General Nickeltalmessite Information

Help on Chemical Formula: Chemical Formula: Ca2Ni(AsO4)2•2H2O
Help on Composition: Composition: Molecular Weight = 452.71 gm
   Calcium   17.71 %  Ca   24.77 % CaO
   Nickel    12.96 %  Ni   16.50 % NiO
   Arsenic   33.10 %  As   50.77 % As2O5
   Hydrogen   0.89 %  H     7.96 % H2O
   Oxygen    35.34 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Ni(AsO4)2•2(H2O)
Help on Environment: Environment: Fairfieldite group
Help on IMA Status: IMA Status: Proposed IMA 2008 (Dana # Added)
Help on Locality: Locality: Aīt Ahmane mine, Bou Azzer district, Anti-Atlas, Morocco Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Commission on New Minerals, Nomenclature and Classification (CNMNC)
Help on Synonym: Synonym: IMA2008-051
 

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Nickeltalmessite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.8271:1:0.786
Help on Cell Dimensions: Cell Dimensions: a = 5.858, b = 7.082, c = 5.567, Z = 1; alpha = 97.2°, beta = 109.11°, gamma = 109.78° V = 203.73 Den(Calc)= 3.69
Help on Crystal System: Crystal System: Triclinic - PedialH-M Symbol (1) Space Group: P
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.202(1), 2.772(0.68), 3.099(0.64),2.813(0.6), 3.358(0.58), 3.57(0.43), 1.714(0.39), 5.05(0.27),
 

Optical Properties of Nickeltalmessite

Help on Optical Data: Optical Data: NCalc= 1.72 - from Gladstone-Dale relationship (KC = 0.1904) where Ncalc=Dcalc*KC+1
 

Calculated Properties of Nickeltalmessite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.66 gm/cc
note: Specific Gravity of Nickeltalmessite =3.80 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0018749314
Boson Index = 0.9981250686
Help on Photoelectric: Photoelectric: PENickeltalmessite = 29.75 barns/electron
U=PENickeltalmessite x rElectron Density= 108.87 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Nickeltalmessite is Not Radioactive
 

Nickeltalmessite Classification
Help on Dana Class: Dana Class: 40.02.02.10 (40)Hydrated Phosphates, etc
  (40.02)where A++ (B++)2 (XO4) ˇ x(H2O)
  (40.02.02)Fairfieldite Subgroup (Triclinic: P-1¯)
 
40.02.02.01 Fairfieldite Ca2(Mn,Fe)(PO4)2•2(H2O) P1 1
 
40.02.02.02 Messelite Ca2(Fe,Mn)(PO4)2•2(H2O) P1 1
 
40.02.02.03 Collinsite Ca2(Mg,Fe)(PO4)2•2(H2O) P1 1
 
40.02.02.04 Cassidyite Ca2(Ni,Mg)(PO4)2•2(H2O) P1 1
 
40.02.02.05 Talmessite Ca2Mg(AsO4)2•2(H2O) P1 1
 
40.02.02.06 Gaitite Ca2Zn(AsO4)2•2(H2O) P1 1
 
40.02.02.07 Roselite-beta Ca2(Co,Mg)(AsO4)2•2(H2O) P 1 or P1 Tri
 
40.02.02.08 Parabrandtite Ca2Mn(AsO4)•2(H2O) P1,P 1 Tri
 
40.02.02.09 Hillite! Ca2(Zn,Mg)[PO4]2•2(H2O) P1 1
 
40.02.02.10 Nickeltalmessite! Ca2Ni(AsO4)2•2H2O P 1
Help on Strunz Class: Strunz Class: 08.CG.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CG -With large and medium-sized cations, RO4:H2O = 1:1
 
08.CG.35 Nickeltalmessite! Ca2Ni(AsO4)2•2H2O P 1
 

Other Nickeltalmessite Information
Help on See Also: See Also: Links to other databases for Nickeltalmessite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Print or Cut-and-Paste your Nickeltalmessite Specimen Label here :

Nickeltalmessite

Ca2Ni(AsO4)2•2H2O
Dana No: 40.02.02.10 Strunz No: 08.CG.35
Locality:

 

Notes: