Antimonpearceite Mineral Data
General Antimonpearceite Information
Chemical Formula:
[Ag9CuS4] [(Ag,Cu)6(Sb,As)2S7]
Composition:
Molecular Weight = 2,121.41 gm
Copper 11.98 % Cu
Silver 61.02 % Ag
Antimony 8.61 % Sb
Arsenic 1.77 % As
Sulfur 16.63 % S
______
100.00 %
Empirical Formula:
Ag12 Cu4 Sb1.5 As0.5 S11
Environment:
In epithermal precious metal veins.
IMA Status:
Approved IMA 1963
Locality:
In Mexico, from an unspecified locality in Sonora, and from Guanajuato. At Taltal, Chile. From the Clara mine, near Wolfrath, Black Forest, Germany. Link to MinDat.org Location Data.
Name Origin:
For its compositional relationship to pearceite.
Name Pronunciation:
Antimonpearceite + Pronunciation
Synonym:
Polybasite-Tac - Suggested nomenclature from AmMin v92:918
Antimonpearceite Crystallography
Axial Ratios:
a:b:c =1.7297:1:1.6081
Cell Dimensions:
a = 12.8, b = 7.4, c = 11.9, Z = 2; beta = 90° V = 1,127.17 Den(Calc)= 6.25
Crystal System:
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
X Ray Diffraction:
By Intensity(I/Io ): 3(1), 2.84(0.9), 3.11(0.5),
Physical Properties of Antimonpearceite
Cleavage:
None
Color:
Black.
Density:
6.33 - 6.35, Average = 6.34
Diaphaneity:
Opaque
Hardness:
3 - Calcite
Luster:
Sub Metallic
Streak:
black
Calculated Properties of Antimonpearceite
Electron Density:
Bulk Density (Electron Density)=5.59 gm/cc note: Specific Gravity of Antimonpearceite =6.25 gm/cc.
Fermion Index:
Fermion Index = 0.0012470196 Boson Index = 0.9987529804
Photoelectric:
PEAntimonpearceite = 191.60 barns/electronU=PEAntimonpearceite x r Electron Density=1,071.40 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Antimonpearceite is Not Radioactive
Antimonpearceite Classification
Dana Class:
03.01.08.02 (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 3 m1 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 3 m1 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 3 m1 3 2/m
02.GB.15 Cupropearceite [Cu6As2S7][Ag9CuS4] P 3 m1 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 3 m1 3 2/m
Other Antimonpearceite Information
References:
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:
Links to other databases for Antimonpearceite :
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 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
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Antimonpearceite
[Ag9CuS4] [(Ag,Cu)6(Sb,As)2S7]
Dana No: 03.01.08.02 Strunz No: 02.GB.15
Locality:
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