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Shubnikovite Mineral Data

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General Shubnikovite Information

Help on Chemical  Formula: Chemical Formula: Ca2Cu8(AsO4)6Cl(OH)•7(H2O) (?)
Help on Composition: Composition: Molecular Weight = 1,600.61 gm
   Calcium    5.01 %  Ca    7.01 % CaO
   Copper    31.76 %  Cu   39.76 % CuO
   Arsenic   28.08 %  As   43.08 % As2O5
   Hydrogen   0.94 %  H     8.44 % H2O
   Chlorine   2.21 %  Cl    2.21 % Cl
               -   %   Cl   -0.50 % -O=Cl2   
   Oxygen    31.99 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Cu8(AsO4)6Cl(OH)•7(H2O)
Help on Environment: Environment: Inadequately described mineral. Found in a Russian oxidation zone.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1953
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Aleksei V. Shunikov (1887-1971), crystallographer, Institute of Crystallography, Moscow, Russia.
Help on Name Pronunciation: Name Pronunciation: Shubnikovite + Pronunciation Say SHUBNIKOVITE

Shubnikovite Crystallography

Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk

Physical Properties of Shubnikovite

Help on Color: Color: Light blue.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 2 - Gypsum

Optical Properties of Shubnikovite

Help on Optical Data: Optical Data: Biaxial (-), a=1.64, b=1.69, g=1.69, bire=0.0500, 2V(Calc)=0, 2V(Meas)=small.
Help on Pleochroism (x): Pleochroism (x): light blue.
Help on Pleochroism (y): Pleochroism (y): greenish blue.
Help on Pleochroism (z): Pleochroism (z): greenish blue.

Calculated Properties of Shubnikovite

Help on Fermion Index: Fermion Index: Fermion Index = 0.000222559
Boson Index = 0.999777441
Help on Photoelectric: Photoelectric: PEShubnikovite = 34.14 barns/electron
U=PEShubnikovite x rElectron Density= . barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Shubnikovite is Not Radioactive

Shubnikovite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.08)where (AB)7 (XO4)4 Zq � x(H2O)
  (42.08.08)Dana Group Shubnikovite Ca2Cu8(AsO4)6Cl(OH)•7(H2O)(?) Unk Ortho
Help on  Strunz Class: Strunz Class: 08.DG.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DG -With large and medium-sized cations, (OH, etc.):RO4 < 0.5:1
08.DG.05 Lavendulan NaCaCu5(AsO4)4Cl•5(H2O) Unk Ortho
08.DG.05 Shubnikovite Ca2Cu8(AsO4)6Cl(OH)•7(H2O)(?) Unk Ortho
08.DG.05 Sampleite NaCaCu5(PO4)4Cl•5(H2O) pseudo TET 2/m 2/m 2/m
08.DG.05 Zinclavendulan? NaCa(Zn,Cu)5(AsO4)4Cl•4-5(H2O) Unk Ortho
08.DG.05 Lemanskiite! NaCaCu5(AsO4)4Cl•5H2O P 4122 or P 4322 4 2 2
08.DG.05 Zdenekite NaPbCu5(AsO4)4Cl•5(H2O) P 4122,P 4322 4 2 2

Other Shubnikovite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Shubnikovite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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


Ca2Cu8(AsO4)6Cl(OH)•7(H2O) (?)
Dana No: Strunz No: 08.DG.05