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Maikainite

A valid IMA mineral species
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05953640017271949027581.png
Ovamboite, etc.

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
04548540017753515865546.jpg
Maikainite

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
05953640017271949027581.png
Ovamboite, etc.

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
04548540017753515865546.jpg
Maikainite

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
05953640017271949027581.png
Ovamboite, etc.

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
04548540017753515865546.jpg
Maikainite

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
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About MaikainiteHide

Formula:
Cu20(Fe,Cu)6Mo2Ge6S32
Colour:
Yellow
Lustre:
Metallic
Hardness:
4
Specific Gravity:
4.453 (Calculated)
Crystal System:
Isometric
Member of:
Germanite Group
Name:
For the type locality.
This page provides mineralogical data about Maikainite.


Unique IdentifiersHide

Mindat ID:
29014
Long-form identifier:
mindat:1:1:29014:0

IMA Classification of MaikainiteHide

Classification of MaikainiteHide

Strunz-mindat (2026):
2.CB.30

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.

Mineral SymbolsHide

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

SymbolSourceReference for Standard
MaiIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of MaikainiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Yellow
Hardness:
4 on Mohs scale
Hardness:
VHN30=275 - 345 kg/mm2 - Vickers
Cleavage:
None Observed
Density:
4.453 g/cm3 (Calculated)

Optical Data of MaikainiteHide

Anisotropism:
None
Bireflectance:
None
Reflectivity:
WavelengthR1 (%)
400nm22.3%
420nm22.7%
440nm23.4%
460nm23.4%
470nm23.7%
480nm24.1%
500nm24.8%
520nm24.9%
540nm25.4%
546nm25.5%
560nm25.6%
580nm25.7%
589nm25.7%
600nm25.6%
620nm25.1%
640nm25.4%
650nm25.6%
660nm25.7%
680nm25.0%
700nm23.8%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 25.7%.
Colour in reflected light:
Bright yellow to grayish white.
Internal Reflections:
None

Chemistry of MaikainiteHide

Mindat Formula:
Cu20(Fe,Cu)6Mo2Ge6S32
Element Weights:
Element% weight
Cu38.987 %
S31.477 %
Ge13.370 %
Fe10.279 %
Mo5.887 %

Calculated from ideal end-member formula.
Elements listed:
Cu, Fe, Ge, Mo, S - search for minerals with similar chemistry

Crystallography of MaikainiteHide

Crystal System:
Isometric
Class (H-M):
m3m(4/m32/m) - Hexoctahedral
Cell Parameters:
a = 10.64 Å
Unit Cell V:
1,204.55 ų (Calculated from Unit Cell)
Comment:
P4-3n By analogy with the germanite group

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.07 Å(100)
2.66 Å(20)
1.884 Å(80)
1.603 Å(40)
1.220 Å(20)
1.331 Å(10)
1.190 Å(10)
Comments:
Maikain Au deposit, Kazakhstan. Data from type description.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of MaikainiteHide

Type Locality:
ⓘ Maikain Au deposit, Bayanaul District, Pavlodar Region, Kazakhstan
General Appearance of Type Material:
up to 45 μm oval particles and rare crystals
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, and in the Mining Museum, St. Petersburg, Russia.
Geological Setting of Type Material:
In a gold-bearing massive-sulfide base-metal deposit.
Associated Minerals at Type Locality:
BaryteBorniteGalenaGalliteGermanite
GermanocolusiteOvamboiteSphaleriteTennantite Subgroup
Reference:
Spiridonov, E.M. (2003) Maikainite Cu20(Fe,Cu)6Mo2Ge6S32 and ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32: New minerals in massive sulfide base metal ores. Doklady Earth Sciences: 393A: 1329–1332.

Synonyms of MaikainiteHide

Other Language Names for MaikainiteHide

German:Maikainit
Simplified Chinese:锗硫钼铁铜矿
Traditional Chinese:鍺硫鉬鐵銅礦

Relationship of Maikainite to other SpeciesHide

Member of:
Germanite Group
Other Members of Germanite Group:
ChatkaliteCu6FeSn2S8Tet. 42m : P4m2
ColusiteCu13VAs3S16Iso. 43m : P43n
GermaniteCu13Fe2Ge2S16Iso. 43m : P43n
GermanocolusiteCu26V2(Ge,As)6S32Iso. 43m : P43m
NekrasoviteCu26V2(Sn,As,Sb)6S32Iso. 43m : P43n
Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32Iso. 43m : P43n
Renierite(Cu+,Zn)11Fe4(Ge4+,As5+)2S16Tet. 42m : P42c
StibiocolusiteCu13V(Sb,Sn,As)3S16Iso. 43m : P43m

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Maikainite associated with Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32

Related Minerals - Strunz-mindat GroupingHide

2.CB.RichardsiteZn2CuGaS4Tet. 42m : I42m
2.CB.OkruginiteCu2SnSe3Mon. m : Bb
2.CB.HanswilkeiteKFeS2Mon. 2/m : B2/b
2.CB.AuroselenideAuSeMon. 2/m : B2/m
2.CB.Ruizhongite(Ag2◻)Pb3Ge2S8Iso. 43m : I43d
2.CB.AgmantiniteAg2MnSnS4Orth.
2.CB.TolstykhiteAu3S4Te6Tric. 1 : P1
2.CB.GachingiteAu(Te1-xSex)Orth. mmm(2/m2/m2/m)
2.CB.05aHawleyiteCdSIso. 43m : F43m
2.CB.05'UM1998-15-S:CuFeZn'Cu2Fe3Zn5S10
2.CB.05aColoradoiteHgTeIso. 43m : F43m
2.CB.05aMetacinnabarHgSIso. 43m : F43m
2.CB.05aTiemanniteHgSeIso. 43m : F43m
2.CB.05aSphaleriteZnSIso. 43m : F43m
2.CB.05bSakuraiite(Cu,Zn,Fe)3(In,Sn)S4 Iso.
2.CB.05cPolhemusite(Zn,Hg)STet.
2.CB.05aRudashevskyite(Fe,Zn)SIso. 43m : F43m
2.CB.05aStilleiteZnSeIso. 43m : F43m
2.CB.05aIshiharaite(Cu,Ga,Fe,In,Zn)SIso. 43m : F43m
2.CB.07a'Unnamed (Cu-Mn-Sn Sulphide)'Cu2MnSnS4
2.CB.07aShenzhuangiteNiFeS2Tet. 42m : I42d
2.CB.10bTalnakhiteCu9(Fe,Ni)8S16Iso. 43m : I43m
2.CB.10bHaycockiteCu4Fe5S8Orth. 222
2.CB.10aLenaiteAgFeS2Tet. 42m : I42d
2.CB.10aGalliteCuGaS2Tet. 42m : I42d
2.CB.10aRoquesiteCuInS2Tet. 42m : I42d
2.CB.10aEskeborniteCuFeSe2Tet. 42m : P42c
2.CB.10a'UM1984-30-S:CuFeSn'Cu2Fe2Sn3S7
2.CB.10cOmariniiteCu8Fe2ZnGe2S12Orth. 222 : I222
2.CB.10aChalcopyriteCuFeS2Tet. 42m : I42d
2.CB.10a'Unnamed (Cu-Zn-In Sulphide)'CuZn2InS4
2.CB.10bMooihoekiteCu9Fe9S16Tet. 42m : P42m
2.CB.10aLaforêtiteAgInS2Tet. 42m : I42d
2.CB.10bPutoraniteCu1.1Fe1.2S2Iso. m3m(4/m32/m) : Pn3m
2.CB.15aVelikiteCu2HgSnS4Tet. 4 : I4
2.CB.15c'UM2006-11-S:CuFeGeZn'Cu8(Fe,Zn)3Ge2S12 (?)
2.CB.15aHocartiteAg2(Fe2+,Zn)SnS4Tet. 42m : I42m
2.CB.15aKësteriteCu2ZnSnS4Tet. 4 : I4
2.CB.15aPirquitasiteAg2ZnSnS4Tet. 4 : I4
2.CB.15aStanniteCu2FeSnS4Tet. 42m : I42m
2.CB.15cStannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12Orth. 222 : I222
2.CB.15bMohiteCu2SnS3Mon.
2.CB.15aČernýiteCu2CdSnS4Tet. 42m : I42m
2.CB.15aIdaiteCu5FeS6Hex.
2.CB.15aFerrokësteriteCu2FeSnS4Tet. 4 : I4
2.CB.15aKuramiteCu3SnS4Tet. 42m : I42m
2.CB.17a v'Arsenic-bearing Renierite'Cu11GeAsFe4S16
2.CB.20MawsoniteCu6Fe2SnS8Tet. 42m : P4m2
2.CB.20ChatkaliteCu6FeSn2S8Tet. 42m : P4m2
2.CB.30'Frieseite'Ag2Fe5S8 (?)
2.CB.30NekrasoviteCu26V2(Sn,As,Sb)6S32Iso. 43m : P43n
2.CB.30'Argyropyrite'near Ag2Fe7S11
2.CB.30ColusiteCu13VAs3S16Iso. 43m : P43n
2.CB.30GermaniteCu13Fe2Ge2S16Iso. 43m : P43n
2.CB.30GermanocolusiteCu26V2(Ge,As)6S32Iso. 43m : P43m
2.CB.30StibiocolusiteCu13V(Sb,Sn,As)3S16Iso. 43m : P43m
2.CB.30Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32Iso. 43m : P43n
2.CB.35aMorozeviczite(Pb,Fe)3Ge1-xS4Iso.
2.CB.35aRenierite(Cu+,Zn)11Fe4(Ge4+,As5+)2S16Tet. 42m : P42c
2.CB.35aHemusiteCu6SnMoS8Iso.
2.CB.35bCatamarcaiteCu6GeWS8Hex. 6mm : P63mc
2.CB.35aVincienniteCu+7Cu2+3Fe2+2Fe3+2Sn(As,Sb)S16Tet.
2.CB.35aKiddcreekiteCu6SnWS8Iso. 43m : F43m
2.CB.35aPolkovicite(Fe,Pb)3(Ge,Fe)1-xS4Iso.
2.CB.40LautiteCuAsSOrth. mmm(2/m2/m2/m) : Pnma
2.CB.42LingbaoiteAgTe3Trig. 3m : R3m
2.CB.45CadmoseliteCdSeHex. 6mm : P63mc
2.CB.45RambergiteMnSHex. 6mm : P63mc
2.CB.45Buseckite(Fe,Zn,Mn)SHex. 6mm : P63mc
2.CB.45MaletoyvayamiteAu3Se4Te6Tric. 1 : P1
2.CB.45GreenockiteCdSHex. 6mm : P63mc
2.CB.45Wurtzite(Zn,Fe)SHex. 6mm : P63mc
2.CB.47MurchisiteCr5S6Trig. 3m(32/m) : P31c
2.CB.50'Zincselenide'ZnSe
2.CB.50WassoniteTiSTrig. 3m(32/m) : R3m
2.CB.52'Dzhezkazganite'ReMoCu2PbS6 ?Trig. 3m : R3m
2.CB.55bIsocubaniteCuFe2S3Iso. m3m(4/m32/m) : Fm3m
2.CB.55aCubaniteCuFe2S3Orth. mmm(2/m2/m2/m)
2.CB.60RaguiniteTlFeS2Orth.
2.CB.60PicotpauliteTlFe2S3Orth. mmm(2/m2/m2/m) : Cmcm
2.CB.65ArgentopyriteAgFe2S3Mon. 2/m
2.CB.65SternbergiteAgFe2S3Orth. mmm(2/m2/m2/m)
2.CB.70SulvaniteCu3VS4Iso. 43m : P43m
2.CB.75VulcaniteCuTeOrth. mmm(2/m2/m2/m)
2.CB.80EmpressiteAgTeOrth. mmm(2/m2/m2/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 MaikainiteHide

References for MaikainiteHide

Localities for MaikainiteHide

Showing 2 localities.

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.
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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.
Kazakhstan (TL)
 
  • Pavlodar Region
    • Bayanaul District
E.M. Spiridonov (2003)
Namibia
 
  • Oshikoto Region
    • Tsumeb
Spiridonov (2003)
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