Permingeatite Mineral Data

Permingeatite Mineral Data +

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General Permingeatite Information

Chemical Formula:

Cu3SbSe4

Composition:

Molecular Weight = 628.23 gm

Copper 30.35 % Cu

Antimony 19.38 % Sb

Selenium 50.27 % Se

______

100.00 %

Empirical Formula:

Cu₃SbSe₄

Environment:

A product of hydrothermal mineralization.

IMA Status:

Approved IMA 1971

Locality:

Predborice, Stredocesky kraj, Czech Republic Link to MinDat.org Location Data.

Name Origin:

Named for Francois Permingeat (1917-1988), mineralogist, University of Toulouse, France.

Synonym:

ICSD 400652

PDF 25-263

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Permingeatite Crystallography

Axial Ratios:

a:c = 1:1.99467

Cell Dimensions:

a = 5.63, c = 11.23, Z = 2; V = 355.96 Den(Calc)= 5.86

Crystal System:

Tetragonal - ScalenohedralH-M Symbol (4 2m) Space Group: I 42m

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

By Intensity(I/I_o): 3.251(1), 1.986(0.9), 1.697(0.8),

Physical Properties of Permingeatite

Color:

Pink brown.

Diaphaniety:

Opaque

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

4-4.5 - Between Fluorite and Apatite

Luster:

Metallic

Optical Properties of Permingeatite

RL Anisotrophism:

Strong, with bright colors in rose and green.

RL Color:

Light brownish pink.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Permingeatite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	30.60	30.90
420 nm	29.80	31.00
440 nm	29.00	31.10
460 nm	28.20	30.50
480 nm	27.60	29.40
500 nm	27.00	28.20
520 nm	26.60	27.10
540 nm	26.20	26.30
560 nm	25.60	25.80
580 nm	25.00	25.50
600 nm	24.50	25.60
620 nm	24.50	25.90
640 nm	24.70	26.50
660 nm	25.30	27.40
680 nm	26.20	28.40
700 nm	27.60	29.30

**Calculated Relative Intensity Colors of Permingeatite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	320%	340%
R₁
R₂

Calculated Properties of Permingeatite

Electron Density:

r_electron=5.11 gm/cc
note: r_{Permingeatite}=5.86 gm/cc.

Fermion Index

Fermion Index = 0.0382
Boson Index = 0.9618

Photoelectric:

PE_{Permingeatite}= 120.38 barns/electron
U=PE_{Permingeatite} x r_electron= 615.32 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Permingeatite is Not Radioactive

Permingeatite Classification

Dana Class:

3.2.2.3 (3)Sulfides - Sulfosalts

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

(3.2.2)Dana Group

3.2.2.1 Luzonite Cu3AsS4 I 42m 4 2m

3.2.2.2 Famatinite Cu3SbS4 I 42m 4 2m

3.2.2.3 Permingeatite Cu3SbSe4 I 42m 4 2m

Strunz Class:

II/C.06-30 II - Sulfides and sulphosalts

II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1

II/C.06 - Stannite group

II/C.06-10 Luzonite Cu3AsS4 I 42m 4 2m

II/C.06-20 Famatinite Cu3SbS4 I 42m 4 2m

II/C.06-30 Permingeatite Cu3SbSe4 I 42m 4 2m

II/C.06-40 Briartite Cu2(Zn,Fe)GeS4 I 42m 4 2m

II/C.06-45 Barquillite! Cu2CdGeS4 I 42m 4 2m

II/C.06-50 Kuramite Cu3SnS4 I 42m 4 2m

II/C.06-60 Stannite Cu2FeSnS4 I 42m 4 2m

II/C.06-70 Ferrokesterite Cu2(Fe,Zn)SnS4 I 42m 4 2m

II/C.06-80 Kesterite Cu2(Zn,Fe)SnS4 I 4 4

II/C.06-90 Cernyite Cu2CdSnS4 I 42m 4 2m

II/C.06-100 Velikite Cu2HgSnS4 I 42m 4 2m

II/C.06-110 Hocartite Ag2FeSnS4 I 42m 4 2m

II/C.06-120 Pirquitasite Ag2ZnSnS4 I 42m 4 2m

II/C.06-130 Sakuraiite (Cu,Zn,Fe,In,Sn)4S4 P 4₃2, P 43m, or P m3m Cubic

II/C.06-140 Petrukite (Cu,Fe,Zn)2(Sn,In)S4 P mn2₁ mm2

II/C.06-150 Rhodostannite Cu2FeSn3S8 I 4₁/a 4/m

II/C.06-160 Toyohaite Ag2FeSn3S8 I 4₁/a 4/m

Other Permingeatite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Permingeatite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Permingeatite

Cu3SbSe4
Dana No: 3.2.2.3 Strunz No: II/C.06-30
Locality:

Notes: