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Cameronite

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Formula:
Cu5-x(Cu,Ag)3+xTe10 (x = 0.43)
Originally assumed to be Cu7AgTe10.
System:
Monoclinic
Colour:
Gray
Hardness:
3½ - 4
Name:
For Prof. Eugene Cameron, University of Wisconsin, USA who first recognized it.
This page provides mineralogical data about Cameronite.

Classification of Cameronite

Approved
2.DB.35

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
B : M:S = 2:3
2.16.20.1

2 : SULFIDES
16 : Miscellaneous
3.2.14

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

Place of Conservation of Type Material:
British Natural History Museum
Year of Discovery:
1986
Geological Setting of Type Material:
Hydrothermal tellurium bearing veins.
Associated Minerals at Type Locality:

Physical Properties of Cameronite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Gray
Streak:
Black
Hardness (Mohs):
3½ - 4
Hardness (Vickers):
VHN100=150 - 173 kg/mm2
Tenacity:
Brittle
Fracture:
Sub-Conchoidal
Density:
7.144 g/cm3 (Calculated)

Crystallography of Cameronite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Space Group Setting:
C1 2/c 1
Cell Parameters:
a = 17.906(1) Å, b = 17.927(1) Å, c = 21.230(2) Å
β = 98.081(8)°
Ratio:
a:b:c = 0.999 : 1 : 1.184
Unit Cell Volume:
V 6747.2 ų
Z:
16
Morphology:
Anhedral grains to 200 microns.

Comment:
Originally assumed to be tetragonal, a = 12.695, c = 42.186 A.

Optical Data of Cameronite

Type:
Anisotropic
Anisotropism:
Distinct, medium gray to slate-gray to brownish gray
Pleochroism:
Weak
Comments:
Pale gray to pale brownish gray

Chemical Properties of Cameronite

Formula:
Cu5-x(Cu,Ag)3+xTe10 (x = 0.43)

Originally assumed to be Cu7AgTe10.
Essential elements:
All elements listed in formula:

Relationship of Cameronite to other Species

2.DB.05AntimonseliteSb2Se3
2.DB.05BismuthiniteBi2S3
2.DB.05GuanajuatiteBi2Se3
2.DB.05MetastibniteSb2S3
2.DB.05PääkköneniteSb2AsS2
2.DB.05StibniteSb2S3
2.DB.10Ottemannitebeta Sn2S3
2.DB.10SuredaitePbSnS3
2.DB.15Bowieite(Rh,Ir,Pt)2S3
2.DB.15Kashinite(Ir,Rh)2S3
2.DB.20Montbrayite(Au,Sb)2Te3
2.DB.25EdgariteFeNb3S6
2.DB.30Tarkianite(Cu,Fe)(Re,Mo)4S8
3.2.1AcanthiteAg2S
3.2.3NaumanniteAg2Se
3.2.4AguilariteAg4SeS
3.2.5HessiteAg2Te
3.2.6EmpressiteAgTe
3.2.7StütziteAg5-xTe3, x = 0.24-0.36
3.2.8CervelleiteAg4TeS
3.2.9DervilliteAg2AsS2
3.2.10StromeyeriteAgCuS
3.2.11MckinstryiteAg5-xCu3+xS4
3.2.12JalpaiteAg3CuS2
3.2.13EucairiteAgCuSe
3.2.15Henryite(Cu,Ag)3+xTe2 , with x ~ 0.40
3.2.16SternbergiteAgFe2S3
3.2.17ArgentopyriteAgFe2S3
3.2.18Geffroyite(Cu,Fe,Ag)9(Se,S)8
3.2.19ArgentopentlanditeAg(Fe,Ni)8S8

Other Names for Cameronite

Name in Other Languages:
German:Cameronit
Spanish:Cameronita

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 Cameronite

Reference List:
American Mineralogist: 72: 1023.

Bindi L. & Pinch, W.W. (2014): Cameronite, Cu5−x(Cu,Ag)3+xTe10 (x = 0.43), from the Good Hope Mine, Vulcan, Colorado: Crystal structure and revision of the chemical formula. Canadian Mineralogist, 52, 423-432.

Internet Links for Cameronite

Localities for Cameronite

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.
USA (TL)
 
  • Colorado
    • Gunnison Co.
      • Vulcan District (Cebolla District; Domingo District)
        • Vulcan
Can.Min.(1986) 24, 379-384; "Minerals of Colorado, updated & revised", pp. 127-128 , by Eckel, Edwin B., 1997; Bindi L. & Pinch, W.W. (2014): Cameronite, Cu5−x(Cu,Ag)3+xTe10 (x = 0.43), from the Good Hope Mine, Vulcan, Colorado: Crystal structure and revision of the chemical formula. Canadian Mineralogist, 52, 423-432.
Mineral and/or Locality  
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