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Ustarasite

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Ustarasit
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Ustarasit

metallischer Ustarasit, Ustarasai Bi-Lagerstätte, Brichmulla, Pskem Range, Tashkent, Usbekistan; BB 5 mm

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2021-11-24
Locality: Ustarasai Bi-Lagerstätte / Brichmulla / Bostanliq (Bo'stonliq), Distrikt / Toshkent (Tashkent), Provinz / Usbekistan

Collectors Summary

Color silbergrau, grau-met.
Hardness (Mohs) 2.5
Solubility +++ HNO3, + HCl

Chemism

Chem­ical formula

Pb(Bi,Sb)6S10

Chem­ical com­po­si­tion

Antimon, Bismut, Blei, Schwefel

Unit weight: 1650.916869 u; Number of atoms in the formula: 17

Info

Empirical formula:

Pb(Bi0.75Sb0.25)6S10

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

19.42

10

58.82

32.0655000

320.6550000

Antimony

Sb

11.06

1.5

8.82

121.7601000

182.6401500

Lead

Pb

12.55

1

5.88

207.2100000

207.2100000

Bismuth

Bi

56.96

4.5

26.47

208.9803820

940.4117190

Anal­y­sis wt%

Ø Bi : 65.12, Sb : 2.42, Pb : 10.93, Cu : 0.52, Fe : 1.00, S : 17.25 (Ref: Trud.55)

Strunz 9th edi­tion incl. updates

2.LB.10

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
L: unklassifizierte Sulfosalze
B:
10:Ustarasit-Gruppe

Lapis Clas­sifica­tion

II/E.35-010

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
E: Sulfosalze (S : As,Sb,Bi = x)
35: Blei-Sulfosalze mit Wismut (x= 6,0 - 1,6)

Clas­sifica­tion by Hölzel

2.GB.180

2: SULFIDES
G: SnS Archetype
B: With Cu,Ag,Fe and Pb
1: Meneghinite Series

IMA sta­tus

Status fragwürdig

IMA Classification

IMA Clas­sifica­tion

Lillianite group

Optical Properties

Color

silbergrau, grau-met.

Crystallography

Cell param­e­ters α

nd

Cell param­e­ters β

nd

Cell param­e­ters γ

nd

X-Ray Pow­der Diffrac­tion

3.527(100),
3.080(80),
2.508(80),
1.915(80),
1.732(80),
1.483(100),
1.057(100)

XRD chart Ustarasite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Hard­ness (Mohs)

2.5

VHN (Hard­ness Vick­ers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Insta­bil­ity

+++ HNO3, + HCl

Preface

Author (Name, Year)

Sakharova, 1955

References

Trudy Mineralogicheskogo Muzeya Akademiya Nauk SSSR 7 (1956), 112

IMA group assignments


 
 
AgxPb3–2xSb2+xS6
 
 

 
 
 
CuHgAg7Pb7Sb24S48
monoklin
P21/c

 
 
 
Ag17.6Pb12.8Sb38.1As11.5S96
monoklin
P21/c

 
 
 
Pb14Ag5Sb21S48
monoklin
P21/n

 
 
 
Ag3Mn2Pb4Sb7As4S24
monoklin
P21/n

 
 
 
Ag15Pb18Sb47S96
monoklin
P21/c, P2/c, Pc

 
 
 
Pb12Ag5.5(Cd,Mn,Fe)Sb21.5S48
monoklin
P21/n

 
 
 
Ag19Pb10Sb51S96
orthorhombisch
Pmna

 
 
 
AgPbSb3S6
orthorhombisch
Pn21a

 
 
 
AgPb3MnSb5S12
monoklin
P21/n

 
 
Pb6Bi2S9
monoklin
C2/m

 
 
Ag7Pb10Bi15S36
monoklin
Cm, C2/m

 
 
PbAgBi3S6
monoklin
P21/c

 
 
Pb6Bi2S9
orthorhombisch
Bbmm

 
 
Ag16Pb4(Sb25As15)Σ40S72
triklin
P1

 
 
Pb3Bi2S6
orthorhombisch
Bbmm

 
 
Ag3Pb4Bi5S13
orthorhombisch
Bb21m, Bbmm

 
 
Ag4Pb5Bi7S18
orthorhombisch
Bbmm, Bb21m, Bbm2

 
 
Ag0.70Pb1.60(Bi1.35Sb1.35)S6
orthorhombisch
Cmcm

 
 
Ag7Pb6Bi15S32
monoklin
C2/m, C2, Cm

 
 
Pb(Bi,Sb)6S10
 
 

 
 
Ag5Pb8Bi13S30
monoklin
C2/m

 
 
Pb3Bi2S6
monoklin
C2/m

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Actuality: 20. May 2022 - 03:25:26

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Устарасит

Simplified Chinese

柱硫铋铅矿

CNMNC symbol

Symbol

Utr

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