Vote for your favorite mineral in #MinCup26! - Azurite vs. Smithsonite
It's carbonate-vs-carbonate to kick off Mineral Cup 2026 with copper-rich Azurite against zinc-rich Smithsonite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Černýite

A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
00816390017339889897815.jpg
Černýite, etc.

Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
09352960017535382873583.jpg
Černýite, etc.

Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
01671620017483412484414.jpg
Černýite, etc.

Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
07306950017864942363263.jpg
Černýite, etc.

Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
07454960017530594232039.jpg
Černýite, etc.

Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
06462470017482777192914.jpg
Černýite, etc.

Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
00816390017339889897815.jpg
Černýite, etc.

Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
09352960017535382873583.jpg
Černýite, etc.

Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
Hide all sections | Show all sections

About ČernýiteHide

05986220017271922468149.jpg
Petr Černý
Formula:
Cu2CdSnS4
Originally given as Cu2(Cd,Zn,Fe)SnS4.
Colour:
Steel Grey
Lustre:
Metallic
Hardness:
4
Specific Gravity:
4.76 (Calculated)
Crystal System:
Tetragonal
Member of:
Stannite Group
Name:
Named by S.A. Kissin, D.R. Owens, and W.L. Roberts in 1978 in honor of Dr. Petr Černý (8 January 1934, Brno, Czechoslovakia - 7 April 2018, Winnipeg, Manitoba, Canada), Professor of Geology at the University of Manitoba, Canada, and an expert in the mineralogy of pegmatites. He discovered the mineral at the Tanco Mine. Pronounced CHÄRNĪ·AIT.
This page provides mineralogical data about Černýite.


Name EncodingHide

CP1252:
Cernýite
Latin-1:
Cernýite
ASCII-7:
Cernyite

Unique IdentifiersHide

Mindat ID:
1210
Long-form identifier:
mindat:1:1:1210:8

Similar NamesHide

CorneiteA synonym of 'Biotite hornfels'
Cornuite (of Rogers)A variety of ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O

IMA Classification of ČernýiteHide

Classification of ČernýiteHide

Strunz-mindat (2026):
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.
Dana 8th ed.:
2.9.2.2

2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
Hey's CIM Ref.:
6.1.13

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.

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

Physical Properties of ČernýiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Steel Grey
Streak:
Black
Hardness:
4 on Mohs scale
Hardness:
VHN50=189 - 210 kg/mm2 - Vickers
Cleavage:
None Observed
Density:
4.76 g/cm3 (Calculated)
Comment:
Density could not be measured due to lack of pure material.

Optical Data of ČernýiteHide

Anisotropism:
Very weak in shades of gray
Reflectivity:
WavelengthR1 (%)
470nm24.6%
546nm23.4%
589nm22.3%
650nm22.7%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 24.6%.

Chemistry of ČernýiteHide

Mindat Formula:
Cu2CdSnS4

Originally given as Cu2(Cd,Zn,Fe)SnS4.
Element Weights:
Element% weight
S26.365 %
Cu26.125 %
Sn24.402 %
Cd23.107 %

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

Crystallography of ČernýiteHide

Crystal System:
Tetragonal
Class (H-M):
42m - Scalenohedral
Space Group:
I42m
Cell Parameters:
a = 5.487 Å, c = 10.828 Å
Ratio:
a:c = 1 : 1.973
Unit Cell V:
326.00 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Anhedral grains to 200 microns.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.167 Å(100)
1.939 Å(70)
1.662 Å(50)
1.954 Å(40)
1.639 Å(40)
1.770 Å(30)
1.257 Å(30)
Comments:
Tanco Mine, Manitoba, Canada. Data from the type description.

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)
Geological Setting:
Complex zoned pegmatites

Type Occurrence of ČernýiteHide

Co-Type Localities:
ⓘ Tanco Mine, Bernic Lake, Lac-du-Bonnet area, Manitoba, Canada
ⓘ Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
General Appearance of Type Material:
Very fine intergrowths with kesterite from microscopic to 10x12 cm.
Place of Conservation of Type Material:
University of Manitoba, Winnipeg, Manitoba, Canada, 5159, 5160.
Canadian Geological Survey, Ottawa, Ontario, Canada, 12119.
Royal Ontario Museum, Toronto, Ontario, Canada, M34728–M34730.
Museum of Geology, South Dakota School of Mines, SD, USA, 5098, 5099.
National Museum of Natural History, Washington, D.C., USA, 136924.
Geological Setting of Type Material:
Complex pegmatite.
Associated Minerals at Type Locality:
KësteriteStannite
Reference:
Kissin, S. A., Owens, D. R., Roberts, W. L. (1978) Černýite, a copper-cadmium-tin sulfide with the stannite structure. The Canadian Mineralogist, 16 (2) 139-146

Synonyms of ČernýiteHide

Other Language Names for ČernýiteHide

German:Černýit
Spanish:Černýita

Relationship of Černýite to other SpeciesHide

Member of:
Stannite Group
Other Members of Stannite Group:
BriartiteCu2FeGeS4Tet.
FamatiniteCu3SbS4Tet. 42m : I42m
FerrokësteriteCu2FeSnS4Tet. 4 : I4
HocartiteAg2(Fe2+,Zn)SnS4Tet. 42m : I42m
KësteriteCu2ZnSnS4Tet. 4 : I4
KeutschiteCu2AgAsS4Tet. 42m : I42m
KuramiteCu3SnS4Tet. 42m : I42m
LuzoniteCu3AsS4Tet. 42m : I42m
OmariniiteCu8Fe2ZnGe2S12Orth. 222 : I222
PermingeatiteCu3SbSe4Tet. 42m : I42m
Petrukite(Cu,Fe,Zn,Ag)3(Sn,In)S4Orth. mm2 : Pmn21
PirquitasiteAg2ZnSnS4Tet. 4 : I4
RichardsiteZn2CuGaS4Tet. 42m : I42m
StanniteCu2FeSnS4Tet. 42m : I42m
StannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12Orth. 222 : I222
'UM1984-30-S:CuFeSn'Cu2Fe2Sn3S7
'Unnamed (Cu-Zn-In Sulphide)'CuZn2InS4
VelikiteCu2HgSnS4Tet. 4 : I4
ZincobriartiteCu2(Zn,Fe)(Ge,Ga)S4Tet. 42m : I42m

Common AssociatesHide

Associations Based on Photo Data:
3 photos of Černýite associated with KësteriteCu2ZnSnS4
2 photos of Černýite associated with QuartzSiO2
1 photo of Černýite associated with StanniteCu2FeSnS4

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.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.30MaikainiteCu20(Fe,Cu)6Mo2Ge6S32Iso. m3m(4/m32/m)
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

Notes:
Coexisting cernyite and kesterite can be distinguished by etching width 1:1 HNO3. Kesterite is more readily stained by the etchant.
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 ČernýiteHide

References for ČernýiteHide

Localities for ČernýiteHide

Showing 10 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.
Hide all sections | Show all sections

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.
Canada (TL)
 
  • Manitoba
    • Lac-du-Bonnet area
      • Bernic Lake
153-155. +3 other references
Germany
 
  • Bavaria
    • Upper Palatinate
      • Tirschenreuth District
        • Leonberg
          • Pfaffenreuth
Rank (1985)
Norway
 
  • Nordland
    • Hemnes
      • Bleikvasslia
Cook et al. (1998)
Poland
 
  • Lower Silesian Voivodeship
    • Kamienna Góra County
      • Gmina Kamienna Góra
        • Rędziny
Pieczka et al. (2006)
Spain
 
  • Castile and Leon
    • Salamanca
      • Villar de la Yegua
Murciego et al. (2000)
Pascua et al. (1997)
  • Extremadura
Moëlo et al. (1987)
Switzerland
 
  • Valais
    • Goms
      • Binn
        • Fäld
fglb.clubdesk.com (2020) +1 other reference
USA (TL)
 
  • South Dakota
    • Pennington County
      • Keystone Mining District
        • Keystone
Kissin et al. (1978) +1 other reference
Mineralogical Society of America - ...
Quick NavTopAbout ČernýiteName EncodingUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 1, 2026 10:55:24 Page updated: August 17, 2026 03:00:40
Go to top of page