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Coloradoite

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Formula:
HgTe
System:
Isometric
Colour:
Iron black tending ...
Hardness:
Name:
Named in 1877 by Frederick Genth for the type localities which are in Colorado.
This page provides mineralogical data about Coloradoite.

Classification of Coloradoite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
2.CB.05a

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.
2.8.2.5

2 : SULFIDES
8 : AmXp, with m:p = 1:1
3.5.8

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
5 : Sulphides etc. of Hg and Tl
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Type Occurrence of Coloradoite

Year of Discovery:
1877

Occurrences of Coloradoite

Geological Setting:
Hydrothermal, tellurium bearing precious metal veins.

Physical Properties of Coloradoite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Iron black tending toward gray
Hardness (Mohs):
Hardness (Vickers):
VHN100=25 - 28 kg/mm2
Tenacity:
Brittle
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
8.10 g/cm3 (Measured)    8.092 g/cm3 (Calculated)

Crystallography of Coloradoite

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Cell Parameters:
a = 6.453Å
Unit Cell Volume:
V 268.71 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Massive, granular

Optical Data of Coloradoite

Type:
Anisotropic
Anisotropism:
Moderate, dark brownish red to blue-gray
Colour in reflected light:
White with a slight grayish brown tint, tarnishing to dull purple

Chemical Properties of Coloradoite

Formula:
HgTe
All elements listed in formula:
Common Impurities:
Pb

Relationship of Coloradoite to other Species

Other Members of Group:
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.10bPutoraniteCu1.1Fe1.2S2
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.15aKësteriteCu2ZnSnS4
2.CB.15aKuramiteCu3SnS4
2.CB.15bMohiteCu2SnS3
2.CB.15aPirquitasiteAg2ZnSnS4
2.CB.15aStanniteCu2FeSnS4
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.30ColusiteCu12VAs3S16
2.CB.30GermaniteCu13Fe2Ge2S16
2.CB.30GermanocolusiteCu26V2(Ge,As)6S32
2.CB.30NekrasoviteCu26V2(Sn,As,Sb)6S32
2.CB.30StibiocolusiteCu13V(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(Cu1+,Zn)11Fe4(Ge4+,As5+)2S16
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.45CadmoseliteCdSe
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
3.5.1CinnabarHgS
3.5.2HypercinnabarHgS
3.5.3MetacinnabarHgS
3.5.4ImiteriteAg2HgS2
3.5.5TiemanniteHgSe
3.5.6BalkaniteCu9Ag5HgS8
3.5.7Danielsite(Cu,Ag)14HgS8
3.5.9GortdrumiteCu18FeHg6S16
3.5.10Polhemusite(Zn,Hg)S
3.5.11CarliniteTl2S
3.5.12CrookesiteCu7(Tl, Ag)Se4
3.5.13SabatieriteCu6TlSe4
3.5.14PicotpauliteTlFe2S3
3.5.15RaguiniteTlFeS2
3.5.16ThalcusiteTl2Cu3FeS4
3.5.17BukoviteTl2(Cu,Fe)4Se4
3.5.18GalliteCuGaS2
3.5.19RoquesiteCuInS2
3.5.20InditeFeIn2S4

Other Names for Coloradoite

Name in Other Languages:
Simplified Chinese:碲汞矿
Spanish:Coloradoita

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 Coloradoite

Reference List:
Genth (1877), Am. Phil Soc., Proceedings: 17: 115.

Hillebrand, William Francis (1899), Mineralogical notes: melonite (?), coloradoite, petzite, hessite: Am. Jour. Sci., 4th. series: 8: 295-298.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, 834pp.: 218-219.

Internet Links for Coloradoite

Localities for Coloradoite

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.
Mineral and/or Locality  
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