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Shubnikovite Mineral Data
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General Shubnikovite Information
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 Chemical Formula: |
Ca2Cu8(AsO4)6Cl(OH)•7(H2O) (?) |
| Composition: |
Molecular Weight = 1,600.61 gm |
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Calcium 5.01 % Ca 7.01 % CaO |
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Copper 31.76 % Cu 39.76 % CuO |
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Arsenic 28.08 % As 43.08 % As2O5 |
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Hydrogen 0.94 % H 8.44 % H2O |
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Chlorine 2.21 % Cl 2.21 % Cl |
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- %
Cl -0.50 % -O=Cl2 |
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Oxygen 31.99 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca2Cu8(AsO4)6Cl(OH)•7(H2O) |
| Environment: |
Inadequately described mineral. Found in a Russian oxidation zone. |
| IMA Status: |
Valid Species (Pre-IMA) 1953 |
| Locality: |
Link to MinDat.org Location Data. |
| Name Origin: |
Named for Aleksei V. Shunikov (1887-1971), crystallographer, Institute of Crystallography, Moscow, Russia. |
| Name Pronunciation: |
Shubnikovite + Pronunciation  |
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Shubnikovite Crystallography
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| Crystal System: |
Orthorhombic Space Group: Unk |
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Physical Properties of Shubnikovite
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| Color: |
Light blue. |
| Habit: |
Platy - Sheet forms (e.g. micas). |
| Hardness: |
2 - Gypsum |
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Optical Properties of Shubnikovite
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| Optical Data: |
Biaxial (-), a=1.64, b=1.69, g=1.69, bire=0.0500, 2V(Calc)=0, 2V(Meas)=small. |
| Pleochroism (x): |
light blue. |
| Pleochroism (y): |
greenish blue. |
| Pleochroism (z): |
greenish blue. |
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Calculated Properties of Shubnikovite
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| Fermion Index: |
Fermion Index = 0.000222559
Boson Index = 0.999777441 |
| Photoelectric: |
PEShubnikovite = 34.14 barns/electron
U=PEShubnikovite x rElectron Density= . barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Shubnikovite is Not Radioactive |
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Shubnikovite Classification
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| Dana Class: |
42.08.08.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
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(42.08)where (AB)7 (XO4)4 Zq � x(H2O) |
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(42.08.08)Dana Group |
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42.08.08.01 Shubnikovite Ca2Cu8(AsO4)6Cl(OH)•7(H2O)(?) Unk Ortho |
| Strunz Class: |
08.DG.05 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.D - Phosphates, etc |
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08.DG -With large and medium-sized cations, (OH, etc.):RO4 < 0.5:1 |
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08.DG.05 Lavendulan NaCaCu5(AsO4)4Cl•5(H2O) Unk Ortho |
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08.DG.05 Shubnikovite Ca2Cu8(AsO4)6Cl(OH)•7(H2O)(?) Unk Ortho |
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08.DG.05 Sampleite NaCaCu5(PO4)4Cl•5(H2O) pseudo TET 2/m 2/m 2/m |
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08.DG.05 Zinclavendulan? NaCa(Zn,Cu)5(AsO4)4Cl•4-5(H2O) Unk Ortho |
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08.DG.05 Lemanskiite! NaCaCu5(AsO4)4Cl•5H2O P 4122 or P 4322 4 2 2 |
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08.DG.05 Zdenekite NaPbCu5(AsO4)4Cl•5(H2O) P 4122,P 4322 4 2 2 |
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Other Shubnikovite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) |
| 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 :
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Shubnikovite
Ca2Cu8(AsO4)6Cl(OH)•7(H2O) (?)
Dana No: 42.08.08.01 Strunz No: 08.DG.05
Locality:
Notes:
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