Cupropearceite Mineral Data

General Cupropearceite Information

Chemical Formula:

[Cu6As2S7][Ag9CuS4]

Composition:

Molecular Weight = 1,918.21 gm

Copper 23.19 % Cu

Silver 50.61 % Ag

Arsenic 7.81 % As

Sulfur 18.39 % S

______

100.00 %

Empirical Formula:

Cu₆As₂S₇Ag₉CuS₄

Environment:

Pearceite-polybasite group

IMA Status:

Proposed IMA 2007

Locality:

Sarbai Mine, Turgai region, Kazakhstan Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals, Nomenclature and Classification (CNMNC)

Synonym:

IMA2007-046

Cupropearceite Image

Images:

Cupropearceite

Comments: Crystal of cupropearceite.
Location: Sarbay Mine, near city of Rudnyi, Kostanai Oblast', Kazakhstan. Scale: Crystal size 1 mm.
© Tom Loomis / Dakota Matrix

Cupropearceite Crystallography

Axial Ratios:

a:c = 1:1.6236

Cell Dimensions:

a = 7.3218, c = 11.8877, Z = 1; V = 551.91 Den(Calc)= 5.77

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): 2.972(1), 11.89(0.54), 1.831(0.5),2.349(0.45), 2.476(0.45), 2.797(0.44), 2.168(0.42), 3.063(0.38),

Physical Properties of Cupropearceite

Diaphaneity:

Opaque

Luster:

Metallic

Calculated Properties of Cupropearceite

Electron Density:

Bulk Density (Electron Density)=5.22 gm/cc
note: Specific Gravity of Cupropearceite =5.77 gm/cc.

Fermion Index:

Fermion Index = 0.0013791253
Boson Index = 0.9986208747

Photoelectric:

PE_{Cupropearceite}= 144.86 barns/electron
U=PE_{Cupropearceite} x rElectron Density= 756.44 barns/cc.

Radioactivity:

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

Cupropearceite Classification

Dana Class:

03.01.08.03 (03)Sulfides - Sulfosalts

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

(03.01.08)Pearceite group

03.01.08.01 Pearceite [Ag9CuS4][(Ag,Cu)6(As,Sb)2S7] P 3m1 3 2/m

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

03.01.08.03 Cupropearceite [Cu6As2S7][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 Cupropearceite Information

See Also:

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

Cupropearceite

[Cu6As2S7][Ag9CuS4]
Dana No: 03.01.08.03 Strunz No: 02.GB.15
Locality:

Notes: