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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

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Idaite

Cu3FeS4

tetragonal : 42m : I42m

2.CB.15

Mohite

Cu2SnS3

monoklin : m : Cc

2.CB.15

Černýite

Cu2CdSnS4

tetragonal : 42m : I42m

2.CB.15

Kuramite

Cu3SnS4

tetragonal : 42m : I42m

2.CB.15

Stannite

Cu2FeSnS4

tetragonal : 42m : I42m

2.CB.15

Velikite

Cu2(Hg,Zn)SnS4

tetragonal : 4 : I4

2.CB.15

Hocartite

Ag2FeSnS4

tetragonal : 42m : I42m

2.CB.15

Keutschite

Cu2AgAsS4

tetragonal : 42m : I42m

2.CB.15

Kësterite

Cu2(Zn,Fe)SnS4

tetragonal : 4 : I4

2.CB.15

Stannoidite

Cu8(Fe,Zn)3Sn2S12

orthorhombisch : 222 : I222

2.CB.15

Pirquitasite

Ag2ZnSnS4

tetragonal : 42m, 4 : I42m, I4

2.CB.15

Ferrokësterite

Cu2FeSnS4

tetragonal : 4 : I4

2.CB.15

Richardsite

Zn2CuGaS4

tetragonal : 42m : I42m

2.CB.15

Omariniite

Cu8Fe2ZnGe2S12

orthorhombisch : 222 : I222

2.CB.15c

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Luzonite

Cu3AsS4

tetragonal : 42m : I42m

II/C.06-010

Famatinite

Cu3SbS4

tetragonal : 42m : I42m

II/C.06-020

Permingeatite

Cu3SbSe4

tetragonal : 42m : I42m

II/C.06-030

Briartite

Cu2(Zn,Fe)GeS4

tetragonal : 42m : I42m

II/C.06-040

Barquillite

Cu2(Cd,Fe)GeS4

tetragonal : 42m : I42m

II/C.06-045

Kuramite

Cu3SnS4

tetragonal : 42m : I42m

II/C.06-050

Stannite

Cu2FeSnS4

tetragonal : 42m : I42m

II/C.06-060

Ferrokësterite

Cu2FeSnS4

tetragonal : 4 : I4

II/C.06-070

Kësterite

Cu2(Zn,Fe)SnS4

tetragonal : 4 : I4

II/C.06-080

Černýite

Cu2CdSnS4

tetragonal : 42m : I42m

II/C.06-090

Velikite

Cu2(Hg,Zn)SnS4

tetragonal : 4 : I4

II/C.06-100

Hocartite

Ag2FeSnS4

tetragonal : 42m : I42m

II/C.06-110

Pirquitasite

Ag2ZnSnS4

tetragonal : 42m, 4 : I42m, I4

II/C.06-120

Richardsite

Zn2CuGaS4

tetragonal : 42m : I42m

II/C.06-125

Sakuraiite

(Cu,Zn,Fe)3(In,Sn)S4

II/C.06-130

Petrukite

(Cu,Ag)2(Fe,Zn)(Sn,In)S4

orthorhombisch : mm2 : Pmn21

II/C.06-140

Rhodostannite

(Cu,Ag)2FeSn3S8

tetragonal : 4/m : I41/a

II/C.06-150

Toyohaite

Ag2FeSn3S8

tetragonal : 4/m : I41/a

II/C.06-160

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

'Plumbostannite'

Pb2Fe2Sn2Sb2S11

2.CB.3

Stannite

Cu2FeSnS4

tetragonal : 42m : I42m

2.CB.300

Kuramite

Cu3SnS4

tetragonal : 42m : I42m

2.CB.310

Černýite

Cu2CdSnS4

tetragonal : 42m : I42m

2.CB.320

Velikite

Cu2(Hg,Zn)SnS4

tetragonal : 4 : I4

2.CB.340

Hocartite

Ag2FeSnS4

tetragonal : 42m : I42m

2.CB.350

Pirquitasite

Ag2ZnSnS4

tetragonal : 42m, 4 : I42m, I4

2.CB.360

Kësterite

Cu2(Zn,Fe)SnS4

tetragonal : 4 : I4

2.CB.370

Ferrokësterite

Cu2FeSnS4

tetragonal : 4 : I4

2.CB.375

Stannoidite

Cu8(Fe,Zn)3Sn2S12

orthorhombisch : 222 : I222

2.CB.390

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Chalcopyrite

CuFeS2

tetragonal : 42m : I42d

02.09.01.01

Eskebornite

CuFeSe2

tetragonal : 42m : P42c

02.09.01.02

Gallite

CuGaS2

tetragonal : 42m : I42d

02.09.01.03

Roquesite

CuInS2

tetragonal : 42m : I42d

02.09.01.04

Lenaite

AgFeS2

tetragonal : 42m : I42d

02.09.01.05

Laforêtite

AgInS2

tetragonal : 42m : I42d

02.09.01.06

Stannite

Cu2FeSnS4

tetragonal : 42m : I42m

02.09.02.01

Černýite

Cu2CdSnS4

tetragonal : 42m : I42m

02.09.02.02

Briartite

Cu2(Zn,Fe)GeS4

tetragonal : 42m : I42m

02.09.02.03

Kuramite

Cu3SnS4

tetragonal : 42m : I42m

02.09.02.04

Sakuraiite

(Cu,Zn,Fe)3(In,Sn)S4

02.09.02.05

Hocartite

Ag2FeSnS4

tetragonal : 42m : I42m

02.09.02.06

Pirquitasite

Ag2ZnSnS4

tetragonal : 42m, 4 : I42m, I4

02.09.02.07

Velikite

Cu2(Hg,Zn)SnS4

tetragonal : 4 : I4

02.09.02.08

Kësterite

Cu2(Zn,Fe)SnS4

tetragonal : 4 : I4

02.09.02.09

Ferrokësterite

Cu2FeSnS4

tetragonal : 4 : I4

02.09.02.10

Barquillite

Cu2(Cd,Fe)GeS4

tetragonal : 42m : I42m

02.09.02.11

Chatkalite

Cu6Fe2+Sn2S8

tetragonal : 42m : P4m2

02.09.03.02

Stannoidite

Cu8(Fe,Zn)3Sn2S12

orthorhombisch : 222 : I222

02.09.03.03

Renierite

(Cu,Zn)11(Ge,As)2Fe4S16

tetragonal : 42m : P42c

02.09.04.01

Germanite

Cu13Fe2Ge2S16

kubisch : 43m : P43n

02.09.04.02

Maikainite

Cu10Fe3MoGe3S16

02.09.04.03

Ovamboite

Cu10Fe3WGe3S16

02.09.04.04

Morozeviczite

(Pb,Fe)3Ge1-xS4

02.09.05.01

Polkovicite

(Fe,Pb)3(Ge,Fe)1-xS4

02.09.05.02

Hemusite

Cu1+4Cu2+2SnMoS8

02.09.06.01

Kiddcreekite

Cu6SnWS8

02.09.06.02

Putoranite

Cu1.1Fe1.2S2

kubisch : m3m

02.09.07.01

Talnakhite

Cu9(Fe,Ni)8S16

kubisch : 43m : I43m

02.09.08.01

Haycockite

Cu4Fe5S8

02.09.08.02

Mooihoekite

Cu9Fe9S16

tetragonal : 42m : P42m

02.09.08.03

Raguinite

TlFeS2

monoklin : 2/m : C2/m

02.09.09.01

IMA Number

IMA 1979-013

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