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Kuramite

Collectors Summary

Color Neutral grau
Hardness (Mohs) 5
Crystal System tetragonal, I42m

Chemism

Chem­ical formula

Cu3SnS4

Chem­ical com­po­si­tion

Kupfer, Zinn, Schwefel

Unit weight: 437.6116 u; Number of atoms in the formula: 8

Info

Empirical formula:

Cu3SnS4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

29.31

4

50.00

32.0655000

128.2620000

Copper

Cu

43.56

3

37.50

63.5463000

190.6389000

Tin

Sn

27.13

1

12.50

118.7107000

118.7107000

Anal­y­sis wt%

Ø Cu : 37.27, Fe : 2.36, Zn : 1.88, Sn : 30.12, S : 27.86 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 79)

Strunz 9th edi­tion incl. updates

2.CB.15

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
B: mit Zink (Zn), Eisen (Fe), Kupfer (Cu), Silber (Ag), usw.
15:Stannit-Gruppe

Lapis Clas­sifica­tion

II/C.06-050

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
C: Sulfide mit Metall : S,Se,Te ~ 1:1
6: Stannit-Gruppe

Clas­sifica­tion by Hölzel

2.CB.310

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
B: With Zn,Cu (etc), Coordination Number ~[4] Framework of Cornersharing Tetrahedra: Sphalerite-Germanite-Family
3: Stannite-Group

Dana 8th edi­tion

02.09.02.04

02: Sulfide Minerals
09: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:1
02: Stannite Group (Tetragonal: I-42m) A2BCS type

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Classification

Stannite group

Optical Properties

Color

Neutral grau

Diaphane­ity (Trans­parency)

opak

Crystallography

Crystal Sys­tem

tetragonal

Class (H-M)

42m

Space Group number

121

Space Group

I42m

Cell param­e­ters a (Å)

5.445

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

10.75

Cell param­e­ters a/b or c/a

1.974

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

318.716

X-Ray Pow­der Diffrac­tion

3.13(100),
2.70(20),
2.44(10),
1.914(80),
1.640(60),
1.244(30),
1.108(40),
1.044(20)

XRD chart Kuramite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

5

VHN (Hard­ness Vick­ers)

379 (20g)

Density (g/cm³)

4.56

4.56 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Usbekistan/Toshkent (Tashkent), Provinz/Angren/Chatkal-Kuraminskii-Gebiet/Kochbulak Gold-Lagerstätte

Type material

Uzbekistan - Chatkal Gegend - Kuraminsky Berge - Kochbulak Lagerstätte
-Russia: FMM-Moscow - Type: T:
-Russia: IGEM-Moscow - Type: T:

Preface

Occurrences

Hydrothermal in Gold-Sulfid-Quarz-Erzen

Author (Name, Year)

Kovalenker & Evstigneeva & Troneva & Vyal'sov, 1979

References

Strunz Mineralogical Tables 9. Edition.

American Mineralogist (1980): 65: 1067.

Kovalenker VA, Evstigneeva TL, Troneva NV, Vyal'sov LN: ZVMO,(1979) 108, 564-569.

IMA group assignments

Other languages

German

Kuramit

Spanish

Kuramita

English

Kuramite

French

Kuramite

Russian

Курамит

CNMNC (IMA)-Number

IMA 1979-013

CNMNC symbol

Symbol

Ku

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Kuramit
Google-Bilder-Suche - search for: Kuramit
Mineralienatlas.de (Forum) - search for: Kuramit

English pages

Mindat - search for: Kuramite
Webmineral - search for:Kuramite
Handbook-of-Mineralogy - search for: Kuramite
RRUFF - Raman, XRD and other mineral data - search for: Kuramite
RRUFF - References and PDF downloads - search for: Kuramite
American-Mineralogist-Crystal-Structure-Database - search for: Kuramite
Strahlen.org - search for: Kuramite

Russian pages

Webmineral.ru - search for: Курамит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Kuramit
Crystal-Treasure.com - search for: Kuramit
Bosse - search for: Kuramit
Edelsteine Neuburg - Gundolf Fischer - search for: Kuramit
Geolitho marketplace, by and for collectors - search for: Kuramit

Locations with GPS information