Ustarasite Mineral Data

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General Ustarasite Information

Chemical Formula:

Pb(Bi,Sb)6S10

Composition:

Molecular Weight = 1,738.13 gm

Bismuth 66.13 % Bi

Antimony 3.50 % Sb

Lead 11.92 % Pb

Sulfur 18.45 % S

______

100.00 %

Empirical Formula:

PbBi_5.5Sb_0.5S₁₀

Environment:

In quartz-bismuthinite veins.

IMA Status:

Valid Species (Pre-IMA) 1955

Locality:

Ustarasaisk deposit, western Tian-Shan, Kazakhstan. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Ustarasite + Pronunciation

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Ustarasite Crystallography

Crystal System:

OrthorhombicSpace Group: Unk

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

By Intensity(I/I_o): 1.057(1), 1.483(1), 3.527(1),

Physical Properties of Ustarasite

Cleavage:

{???} Perfect

Color:

Gray, Silver gray.

Diaphaneity:

Opaque

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

2.5 - Finger Nail

Luster:

Metallic

Optical Properties of Ustarasite

RL Anisotrophism:

Strong.

RL Color:

Pure white.

Calculated Properties of Ustarasite

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Ustarasite=1,510.60 barns/electron
U=PE_Ustarasite x rElectron Density= . barns/cc.

Radioactivity:

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

Ustarasite Classification

Dana Class:

03.08.11.01 (03)Sulfides - Sulfosalts

(03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.08.11)Dana Group

03.08.11.01 Ustarasite Pb(Bi,Sb)6S10 Unk Ortho

Strunz Class:

02.JB.40e 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.J - Sulfosalts of PbS Archetype

02.JB -Galena derivatives, with Pb

02.JB.40e Ustarasite Pb(Bi,Sb)6S10 Unk Ortho

Other Ustarasite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

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

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Print or Cut-and-Paste your Ustarasite Specimen Label here :

Ustarasite

Pb(Bi,Sb)6S10
Dana No: 03.08.11.01 Strunz No: 02.JB.40e
Locality:

Notes: