Cupropolybasite Mineral Data

General Cupropolybasite Information

Chemical Formula:

[Cu6Sb2S7][Ag9CuS4]

Composition:

Molecular Weight = 2,011.86 gm

Copper 22.11 % Cu

Silver 48.25 % Ag

Antimony 12.10 % Sb

Sulfur 17.53 % S

______

100.00 %

Empirical Formula:

Cu₆Sb₂S₇Ag₉CuS₄

Environment:

Pearceite-polybasite group

IMA Status:

Proposed IMA 2008 (Dana # Added)

Locality:

Premier Mine, Stewart, British Columbia, Canada Link to MinDat.org Location Data.

Name Origin:

Named as the Cu-rich analog of polybasite

Synonym:

IMA2008-004

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Cupropolybasite Crystallography

Axial Ratios:

a:c = 1:1.60809

Cell Dimensions:

a = 7.341, c = 11.805, V = 550.94

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: P 3m1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.951(1), 2.799(0.52), 1.835(0.46),3.069(0.44), 11.81(0.44), 2.163(0.43), 2.473(0.43), 2.355(0.4),

Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Bindi L , Evain M , Spry P G , Tait K T , Menchetti S , Mineralogical Magazine , 71 (2007) p.641-650, Structural role of copper in the minerals of the pearceite-polybasite group:, the case of the new minerals cupropearceite and cupropolybasite, Locality: Premier mine, Stewart, British Columbia, Canada

Physical Properties of Cupropolybasite

Diaphaneity:

Opaque

Luster:

Metallic

Calculated Properties of Cupropolybasite

Fermion Index:

Fermion Index = 0.0013149238
Boson Index = 0.9986850762

Photoelectric:

PE_{Cupropolybasite}= 173.34 barns/electron
U=PE_{Cupropolybasite} x rElectron Density= . barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cupropolybasite is Not Radioactive

Cupropolybasite Classification

Dana Class:

03.01.07.04 (03)Sulfides - Sulfosalts

(03.01)where z/y > 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.01.07)Polybasite group

03.01.07.01 Arsenpolybasite [Ag9CuS4][(Ag,Cu)6(As,Sb)2S7] C 2/m 2/m

03.01.07.02 Polybasite [Ag9CuS4][(Ag,Cu)6(Sb,As)2S7] C 2/m 2/m

03.01.07.03 Selenopolybasite! [(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2] P 3m1 3m

03.01.07.04 Cupropolybasite! [Cu6Sb2S7][Ag9CuS4] P 3m1 3 2/m

Strunz Class:

02.GB.15 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.G - Sulfarsenites, sulfantimonites, sulfbismuthites

02.GB -Neso-sulfarsenites, etc

02.GB.15 Antimonpearceite [Ag9CuS4][(Ag,Cu)6(Sb,As)2S7] C 2/m 2/m

02.GB.15 Arsenpolybasite [Ag9CuS4][(Ag,Cu)6(As,Sb)2S7] C 2/m 2/m

02.GB.15 Polybasite [Ag9CuS4][(Ag,Cu)6(Sb,As)2S7] C 2/m 2/m

02.GB.15 Pearceite [Ag9CuS4][(Ag,Cu)6(As,Sb)2S7] P 3m1 3 2/m

02.GB.15 Cupropearceite [Cu6As2S7][Ag9CuS4] P 3m1 3 2/m

02.GB.15 Selenopolybasite! [(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2] P 3m1 3m

02.GB.15 Cupropolybasite! [Cu6Sb2S7][Ag9CuS4] P 3m1 3 2/m

Other Cupropolybasite Information

See Also:

Links to other databases for Cupropolybasite :
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 Cupropolybasite Specimen Label here :

Cupropolybasite

[Cu6Sb2S7][Ag9CuS4]
Dana No: 03.01.07.04 Strunz No: 02.GB.15
Locality:

Notes: