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Cadmoselite

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Formula:
CdSe
System:
Hexagonal
Colour:
Black
Lustre:
Adamantine, Resinous
Hardness:
4
Member of:
Name:
For the chemistry of the mineral.
This page provides mineralogical data about Cadmoselite.

Classification of Cadmoselite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
2.CB.45

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 7th ed.:
2.8.7.3
2.8.7.3

2 : SULFIDES
8 : AmXp, with m:p = 1:1
3.4.9

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
4 : Sulphides etc. of Group II metals other than Hg (Mg, Ca, Zn, Cd)
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http://www.mindat.org/min-844.html
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First Recorded Occurrence of Cadmoselite

Year of Discovery:
1957
Geological Setting of First Recorded Material:
Sedimentary rocks in an alkaline, reducing environment.

Physical Properties of Cadmoselite

Adamantine, Resinous
Diaphaneity (Transparency):
Opaque
Colour:
Black
Streak:
Black
Hardness (Mohs):
4
Hardness (Vickers):
VHN100=203 - 222
Tenacity:
Brittle
Cleavage:
Perfect
Perfect, prismatic?
Density:
5.47 g/cm3 (Measured)    5.807 g/cm3 (Calculated)

Crystallography of Cadmoselite

Crystal System:
Hexagonal
Class (H-M):
6mm - Dihexagonal Pyramidal
Space Group:
P63mc
Cell Parameters:
a = 4.271Å, c = 6.969Å
Ratio:
a:c = 1 : 1.632
Unit Cell Volume:
V 110.09 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Cements in sandstone, horizontally striated hexagonal pyramids to 0.1mm.

Optical Data of Cadmoselite

Type:
Anisotropic
Anisotropism:
Weak
Colour in reflected light:
Light gray, slightly brown in oil
Internal Reflections:
Brownish

Chemical Properties of Cadmoselite

Formula:
CdSe
Essential elements:
All elements listed in formula:
Common Impurities:
Fe,Zn,S

Relationship of Cadmoselite to other Species

Member of:
Other Members of Group:
2.CB.05aColoradoiteHgTe
2.CB.05aHawleyiteCdS
2.CB.05aMetacinnabarHgS
2.CB.05cPolhemusite(Zn,Hg)S
2.CB.05bSakuraiite(Cu,Zn,Fe)3(In,Sn)S4
2.CB.05aSphaleriteZnS
2.CB.05aStilleiteZnSe
2.CB.05aTiemanniteHgSe
2.CB.05UM1998-15-S:CuFeZnCu2Fe3Zn5S10
2.CB.05aRudashevskyite(Fe,Zn)S
2.CB.10aChalcopyriteCuFeS2
2.CB.10aEskeborniteCuFeSe2
2.CB.10aGalliteCuGaS2
2.CB.10bHaycockiteCu4Fe5S8
2.CB.10aLenaiteAgFeS2
2.CB.10bMooihoekiteCu9Fe9S16
2.CB.10bPutoraniteCu9(Fe,Ni)9S16
2.CB.10aRoquesiteCuInS2
2.CB.10bTalnakhiteCu9(Fe,Ni)8S16
2.CB.10aLaforêtiteAgInS2
2.CB.15aČernýiteCu2(Cd,Zn,Fe)SnS4
2.CB.15aFerrokësteriteCu2(Fe,Zn)SnS4
2.CB.15aHocartiteAg2(Fe2+,Zn)SnS4
2.CB.15aIdaiteCu5FeS6
2.CB.15aKësteriteCu2(Zn,Fe)SnS4
2.CB.15aKuramiteCu3SnS4
2.CB.15bMohiteCu2SnS3
2.CB.15aPirquitasiteAg2ZnSnS4
2.CB.15aStanniteCu2(Fe,Zn)SnS4
2.CB.15cStannoiditeCu6+Cu22+(Fe2+,Zn)3Sn2S12
2.CB.15aVelikiteCu2HgSnS4
2.CB.15cUM2006-11-S:CuFeGeZnCu8(Fe,Zn)3Ge2S12 (?)
2.CB.20ChatkaliteCu6FeSn2S8
2.CB.20MawsoniteCu6Fe2SnS8
2.CB.30ColusiteCu26V2(As,Sn,Sb)6S32
2.CB.30GermaniteCu13Fe2Ge2S16
2.CB.30GermanocolusiteCu26V2(Ge,As)6S32
2.CB.30NekrasoviteCu26V2(Sn,As,Sb)6S32
2.CB.30StibiocolusiteCu13V4(Sb,Sn,As)3S16
2.CB.30Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32
2.CB.30MaikainiteCu20(Fe,Cu)6Mo2Ge6S32
2.CB.35aHemusiteCu6SnMoS8
2.CB.35aKiddcreekiteCu6SnWS8
2.CB.35aPolkovicite(Fe,Pb)3(Ge,Fe)1-xS4
2.CB.35aRenierite(Cu,Zn)11(Ge,As)2Fe4S16
2.CB.35aVincienniteCu7+Cu32+Fe22+Fe23+Sn(As,Sb)S16
2.CB.35aMorozeviczite(Pb,Fe)3Ge1-xS4
2.CB.35bCatamarcaiteCu6GeWS8
2.CB.40LautiteCuAsS
2.CB.45GreenockiteCdS
2.CB.45Wurtzite(Zn,Fe)S
2.CB.45RambergiteMnS
2.CB.45Buseckite(Fe,Zn,Mn)S
2.CB.55aCubaniteCuFe2S3
2.CB.55bIsocubaniteCuFe2S3
2.CB.60PicotpauliteTlFe2S3
2.CB.60RaguiniteTlFeS2
2.CB.65ArgentopyriteAgFe2S3
2.CB.65SternbergiteAgFe2S3
2.CB.70SulvaniteCu3VS4
2.CB.75VulcaniteCuTe
2.CB.80EmpressiteAgTe
2.CB.85MuthmanniteAuAgTe2
3.4.1Niningerite(Mg,Fe2+,Mn2+)S
3.4.2Oldhamite(Ca,Mg)S
3.4.3MátraiteZnS
3.4.4SphaleriteZnS
3.4.5Wurtzite(Zn,Fe)S
3.4.6StilleiteZnSe
3.4.7GreenockiteCdS
3.4.8HawleyiteCdS

Other Names for Cadmoselite

Other Information

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

References for Cadmoselite

Reference List:
American Mineralogist: 43: 623.

Internet Links for Cadmoselite

Localities for Cadmoselite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Argentina
 
  • La Rioja
    • General Lamadrid department
      • Villa Castelli
        • Sierra de Cacho
Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina); de Brodtkorb, M. K., & Crosta, S. (2010). Reseña de la ubicación geográfica de los seleniuros de la Sierra de Umango, provincia de La Rioja. Revista de la Asociación Geológica Argentina, 67(2), 272-279.
Canada
 
  • Ontario
    • Cochrane District
      • Timmins area
        • Kidd Township
ontariominerals.com
Russia
 
  • Eastern-Siberian Region
    • Tuva Republic
      • Turan District
ZVMO,(1957) 86, 626-628; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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