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Kuramite

A valid IMA mineral species
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About KuramiteHide

02795290015821521267760.jpg
Qurama (Kuramin) mountains, Uzbekistan
Formula:
Cu3SnS4
Lustre:
Metallic
Hardness:
5
Specific Gravity:
4.56 (Calculated)
Crystal System:
Tetragonal
Member of:
Name:
Named in 1979 by V.A. Kovalenker, T.L. Evstigneeva, N.V. Troneva, and L.N. Vyal´sov for the Kuramin (Qurama) Mountains where the type locality is found.
Stannite group.

Compare also the varieties, stannoenargite and stannoluzonite, and other Cu-Sn sulphides: erazoite and 'UM1981-18-S:CuSn'.



Unique IdentifiersHide

Mindat ID:
2291
Long-form identifier:
mindat:1:1:2291:6
GUID
(UUID V4):
0d4f68db-25fe-4db6-9cc4-777c405e5cbf

IMA Classification of KuramiteHide

Classification of KuramiteHide

2.CB.15a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
B : With Zn, Fe, Cu, Ag, etc.
2.9.2.4

2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
6.1.1

6 : Sulphosalts - Sulphostannates, Sulphogermanates,Sulpharsenates, Sulphantimonates, Sulphovanadates and Sulphohalides
1 : Sulphostannates and other sulfides containing Sn

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference
KuIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
KuThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of KuramiteHide

Metallic
Transparency:
Opaque
Streak:
metallic
Hardness:
Hardness:
VHN20=379 - 432 kg/mm2 - Vickers
Density:
4.56 g/cm3 (Calculated)

Optical Data of KuramiteHide

Anisotropism:
Distinct, brown shades
Reflectivity:
WavelengthR1R2
460nm25.3% 25.2%
540nm26.5% 28.7%
580nm26.7% 29.5%
640nm26.5% 28.0%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 29.5%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Neutral gray

Chemistry of KuramiteHide

Mindat Formula:
Cu3SnS4
Common Impurities:
Fe,Zn,In

Crystallography of KuramiteHide

Crystal System:
Tetragonal
Class (H-M):
4 2m - Scalenohedral
Space Group:
I4 2m
Cell Parameters:
a = 5.545(5) Å, c = 10.75(2) Å
Ratio:
a:c = 1 : 1.939
Unit Cell V:
330.53 ų (Calculated from Unit Cell)
Z:
2

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0013950KuramiteChen X, Wada H, Sato A, Mieno M (1998) Synthesis, electrical conductivity, and crystal structure of Cu4Sn7S16 and structure refinement of Cu2SnS3 Journal of Solid State Chemistry 139 144-1511998synthetic0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.13 Å(10)
1.914 Å(8)
1.640 Å(6)
1.108 Å(4)
1.244 Å(3)
2.70 Å(2)
1.044 Å(2)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 3b: Earth’s earliest hydrosphere>4.45
12 : Hadean hydrothermal subsurface sulfide deposits (see also #33)

Type Occurrence of KuramiteHide

General Appearance of Type Material:
Inclusions, 5-80 microns in diameter within goldfieldite.
Place of Conservation of Type Material:
1) A. E. Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia.
2) Institute of Ore Deposits (IGEM), Moscow, Russia.
Geological Setting of Type Material:
Gold-sulfide deposit.
Associated Minerals at Type Locality:
Reference:
Kovalenker, V.A., Evstigneeva,T.L., Troneva, N.V., Vyal´sov, L.N. (1979) Kuramite, Cu3SnS4, a new mineral of the stannite group. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 108: 564-569.

Synonyms of KuramiteHide

Other Language Names for KuramiteHide

German:Kuramit
Spanish:Kuramita

Relationship of Kuramite to other SpeciesHide

Member of:
Other Members of this group:
BriartiteCu2(Fe,Zn)GeS4Tet.
ČernýiteCu2(Cd,Zn,Fe)SnS4Tet. 4 2m : I4 2m
FamatiniteCu3SbS4Tet. 4 2m : I4 2m
FerrokësteriteCu2FeSnS4Tet. 4 : I4
HocartiteAg2(Fe2+,Zn)SnS4Tet. 4 2m : I4 2m
Kësterite Cu2ZnSnS4Tet. 4 : I4
KeutschiteCu2AgAsS4Tet. 4 2m : I4 2m
LuzoniteCu3AsS4Tet. 4 2m : I4 2m
OmariniiteCu8Fe2ZnGe2S12Orth. 2 2 2 : I2 2 2
PermingeatiteCu3SbSe4Tet. 4 2m : I4 2m
Petrukite(Cu,Fe,Zn,Ag)3(Sn,In)S4Orth. mm2 : Pmn21
PirquitasiteAg2ZnSnS4Tet. 4 : I4
RichardsiteZn2CuGaS4Tet. 4 2m : I4 2m
StanniteCu2FeSnS4Tet. 4 2m : I4 2m
StannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12Orth. 2 2 2 : I2 2 2
UM1984-30-S:CuFeSnCu2Fe2Sn3S7
Unnamed (Cu-Zn-In Sulphide)CuZn2InS4
VelikiteCu2HgSnS4Tet. 4 : I4
ZincobriartiteCu2(Zn,Fe)(Ge,Ga)S4Tet. 4 2m : I4 2m

Common AssociatesHide

Associated Minerals Based on Photo Data:
4 photos of Kuramite associated with PyriteFeS2
3 photos of Kuramite associated with QuartzSiO2
1 photo of Kuramite associated with StannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12

Related Minerals - Strunz-mindat GroupingHide

2.CB.AgmantiniteAg2MnSnS4Orth.
2.CB.RichardsiteZn2CuGaS4Tet. 4 2m : I4 2m
2.CB.GachingiteAu(Te1-xSex)Orth. mmm (2/m 2/m 2/m)
2.CB.TolstykhiteAu3S4Te6Tric. 1 : P1
2.CB.HanswilkeiteKFeS2Mon. 2/m : B2/b
2.CB.AuroselenideAuSeMon. 2/m : B2/m
2.CB.Ruizhongite(Ag2◻)Pb3Ge2S8Iso. 4 3m : I4 3d
2.CB.OkruginiteCu2SnSe3Mon. m : Bb
2.CB.05aColoradoiteHgTeIso. 4 3m : F4 3m
2.CB.05aHawleyiteCdSIso. 4 3m : F4 3m
2.CB.05aMetacinnabarHgSIso. 4 3m : F4 3m
2.CB.05cPolhemusite(Zn,Hg)STet.
2.CB.05bSakuraiite(Cu,Zn,Fe)3(In,Sn)S4 Iso.
2.CB.05aSphaleriteZnSIso. 4 3m : F4 3m
2.CB.05aStilleiteZnSeIso. 4 3m : F4 3m
2.CB.05aTiemanniteHgSeIso. 4 3m : F4 3m
2.CB.05UM1998-15-S:CuFeZnCu2Fe3Zn5S10
2.CB.05aRudashevskyite(Fe,Zn)SIso. 4 3m : F4 3m
2.CB.05aIshiharaite(Cu,Ga,Fe,In,Zn)SIso. 4 3m : F4 3m
2.CB.07aShenzhuangiteNiFeS2Tet. 4 2m : I4 2d
2.CB.07aUnnamed (Cu-Mn-Sn Sulpide)Cu2MnSnS4
2.CB.10aChalcopyriteCuFeS2Tet. 4 2m : I4 2d
2.CB.10aEskeborniteCuFeSe2Tet. 4 2m : P4 2c
2.CB.10aGalliteCuGaS2Tet. 4 2m : I4 2d
2.CB.10bHaycockiteCu4Fe5S8Orth. 2 2 2
2.CB.10aLenaiteAgFeS2Tet. 4 2m : I4 2d
2.CB.10bMooihoekiteCu9Fe9S16Tet. 4 2m : P4 2m
2.CB.10bPutoraniteCu1.1Fe1.2S2Iso. m3m (4/m 3 2/m) : Pn3m
2.CB.10aRoquesiteCuInS2Tet. 4 2m : I4 2d
2.CB.10bTalnakhiteCu9(Fe,Ni)8S16Iso. 4 3m : I4 3m
2.CB.10aLaforêtiteAgInS2Tet. 4 2m : I4 2d
2.CB.10aUnnamed (Cu-Zn-In Sulphide)CuZn2InS4
2.CB.10aUM1984-30-S:CuFeSnCu2Fe2Sn3S7
2.CB.10cOmariniiteCu8Fe2ZnGe2S12Orth. 2 2 2 : I2 2 2
2.CB.15aČernýiteCu2(Cd,Zn,Fe)SnS4Tet. 4 2m : I4 2m
2.CB.15aFerrokësteriteCu2FeSnS4Tet. 4 : I4
2.CB.15aHocartiteAg2(Fe2+,Zn)SnS4Tet. 4 2m : I4 2m
2.CB.15aIdaiteCu5FeS6Hex.
2.CB.15aKësterite Cu2ZnSnS4Tet. 4 : I4
2.CB.15bMohiteCu2SnS3Mon.
2.CB.15aPirquitasiteAg2ZnSnS4Tet. 4 : I4
2.CB.15aStanniteCu2FeSnS4Tet. 4 2m : I4 2m
2.CB.15cStannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12Orth. 2 2 2 : I2 2 2
2.CB.15aVelikiteCu2HgSnS4Tet. 4 : I4
2.CB.15cUM2006-11-S:CuFeGeZnCu8(Fe,Zn)3Ge2S12 (?)
2.CB.17a vArsenic-bearing RenieriteCu11GeAsFe4S16
2.CB.20ChatkaliteCu6FeSn2S8Tet. 4 2m : P4m2
2.CB.20MawsoniteCu6Fe2SnS8Tet. 4 2m : P4m2
2.CB.30Argyropyritenear Ag2Fe7S11
2.CB.30ColusiteCu13VAs3S16Iso. 4 3m : P4 3n
2.CB.30GermaniteCu13Fe2Ge2S16Iso. 4 3m : P4 3n
2.CB.30GermanocolusiteCu26V2(Ge,As)6S32Iso. 4 3m : P4 3m
2.CB.30NekrasoviteCu26V2(Sn,As,Sb)6S32Iso. 4 3m : P4 3n
2.CB.30StibiocolusiteCu13V(Sb,Sn,As)3S16Iso. 4 3m : P4 3m
2.CB.30Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32Iso. 4 3m : P4 3n
2.CB.30MaikainiteCu20(Fe,Cu)6Mo2Ge6S32Iso. m3m (4/m 3 2/m)
2.CB.30FrieseiteAg2Fe5S8 (?)
2.CB.35aHemusiteCu6SnMoS8Iso.
2.CB.35aKiddcreekiteCu6SnWS8Iso. 4 3m : F4 3m
2.CB.35aPolkovicite(Fe,Pb)3(Ge,Fe)1-xS4Iso.
2.CB.35aRenierite(Cu1+,Zn)11Fe4(Ge4+,As5+)2S16Tet. 4 2m : P4 2c
2.CB.35aVincienniteCu+7Cu2+3Fe2+2Fe3+2Sn(As,Sb)S16Tet.
2.CB.35aMorozeviczite(Pb,Fe)3Ge1-xS4Iso.
2.CB.35bCatamarcaiteCu6GeWS8Hex. 6mm : P63mc
2.CB.40LautiteCuAsSOrth. mmm (2/m 2/m 2/m) : Pnma
2.CB.42LingbaoiteAgTe3Trig. 3m : R3m
2.CB.45CadmoseliteCdSeHex. 6mm : P63mc
2.CB.45GreenockiteCdSHex. 6mm : P63mc
2.CB.45Wurtzite(Zn,Fe)SHex. 6mm : P63mc
2.CB.45RambergiteMnSHex. 6mm : P63mc
2.CB.45Buseckite(Fe,Zn,Mn)SHex. 6mm : P63mc
2.CB.45MaletoyvayamiteAu3Se4Te6Tric. 1 : P1
2.CB.47MurchisiteCr5S6Trig. 3m (3 2/m) : P3 1c
2.CB.50ZincselenideZnSe
2.CB.50WassoniteTiSTrig. 3m (3 2/m) : R3m
2.CB.52DzhezkazganiteReMoCu2PbS6 ?Trig. 3m : R3m
2.CB.55aCubaniteCuFe2S3Orth. mmm (2/m 2/m 2/m)
2.CB.55bIsocubaniteCuFe2S3Iso. m3m (4/m 3 2/m) : Fm3m
2.CB.60PicotpauliteTlFe2S3Orth. mmm (2/m 2/m 2/m) : Cmcm
2.CB.60RaguiniteTlFeS2Orth.
2.CB.65ArgentopyriteAgFe2S3Mon. 2/m
2.CB.65SternbergiteAgFe2S3Orth. mmm (2/m 2/m 2/m)
2.CB.70SulvaniteCu3VS4Iso. 4 3m : P4 3m
2.CB.75VulcaniteCuTeOrth. mmm (2/m 2/m 2/m)
2.CB.80EmpressiteAgTeOrth. mmm (2/m 2/m 2/m)
2.CB.85MuthmanniteAuAgTe2Mon. 2/m : P2/m

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for KuramiteHide

References for KuramiteHide

Localities for KuramiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Arctic Ocean
 
  • Norwegian Sea
    • Mohns Ridge
Olsen (2016)
Argentina
 
  • Catamarca Province
    • Andalgalá Department
      • Andalgalá
FRANCHINI (27º26'S-66º16'O)
  • Salta Province
    • Los Andes department
      • San Antonio de los Cobres
        • Organullo mining district
DE BRODTKORB +2 other references
Chile
 
  • Coquimbo
    • Elqui Province
Henley et al. (2012)
DR Congo
 
  • Haut-Katanga
...
Greece
 
  • Eastern Macedonia and Thrace
    • Evros
      • Alexandroupoli
Voudouris et al. (2011)
Hungary
 
  • Heves County
    • Pétervására District
      • Recsk
Japan
 
  • Hokkaidō Prefecture
    • Shiribeshi Subprefecture
CHIMIZU (1993)
UK
 
  • England
    • Cornwall
      • Treverbyn
        • Stenalees
Golley et al. (1995)
USA
 
  • Arizona
    • Cochise County
Graeme (1993)
Anthony et al. (1995)
  • Colorado
    • San Juan County
      • Anvil Mountain
Rocks & Minerals 71:2 pp94-101
  • Nevada
    • Esmeralda County
Castor et al. (2004)
    • Nye County
      • Cactus Range
        • Cactus Springs Mining District
Castor et al. (2004)
      • Gold Crater Mining District
Castor et al. (2004)
Uzbekistan (TL)
 
  • Tashkent Region
    • Ohangaron District
Kovalenker et al. (1979) +3 other references
 
矿物 and/or 产地  
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