Chaméanite
A valid IMA mineral species
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Formula:
(Cu,Fe)4As(Se,S)4
Colour:
Grey
Lustre:
Metallic
Hardness:
4½
Specific Gravity:
6.17 (Calculated)
Crystal System:
Isometric
Name:
Named for the locality, Chaméane, Puy-de-Dôme, France
Unique Identifiers
Mindat ID:
965
Long-form identifier:
mindat:1:1:965:4
GUID
(UUID V4):
(UUID V4):
32ad7a79-24c3-43e3-93b2-8043b3e7dfa2
IMA Classification of Chaméanite
Approved
Approval year:
1980
Classification of Chaméanite
2.LA.35
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
A : Without essential Pb
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
A : Without essential Pb
Dana 7th ed.:
3.2.8.1
3.2.8.1
3 : SULFOSALTS
2 : ø = 4
3 : SULFOSALTS
2 : ø = 4
3.1.34
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
1 : Sulphides etc. of Cu
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
1 : Sulphides etc. of Cu
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Céa | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Cm | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Chaméanite
Metallic
Transparency:
Opaque
Colour:
Grey
Streak:
(not reported)
Hardness:
4½ on Mohs scale
Hardness:
VHN25=247 - 292 kg/mm2 - Vickers
Density:
6.17 g/cm3 (Calculated)
Optical Data of Chaméanite
Type:
Isotropic
Reflectivity:
Wavelength | R |
---|---|
400nm | 27.4% |
420nm | 27.1% |
440nm | 26.8% |
460nm | 26.5% |
480nm | 26.1% |
500nm | 26.6% |
520nm | 26.9% |
540nm | 27.1% |
560nm | 27.3% |
580nm | 27.5% |
600nm | 27.7% |
620nm | 27.8% |
640nm | 28.0% |
660nm | 28.2% |
680nm | 28.4% |
700nm | 28.7% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 28.7%.
Colour in reflected light:
Dark gray
Chemistry of Chaméanite
Mindat Formula:
(Cu,Fe)4As(Se,S)4
Crystallography of Chaméanite
Crystal System:
Isometric
Cell Parameters:
a = 11.039(4) Å
Unit Cell V:
1,345.21 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Anhedral grains.
Comment:
Point Group: Undetermined, but with a body-centered lattice.;Space Group: n.d.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.187 Å | (100) |
1.951 Å | (90) |
1.665 Å | (80) |
1.127 Å | (70) |
1.266 Å | (60) |
1.062 Å | (50) |
1.381 Å | (40) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-? alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Chaméanite
General Appearance of Type Material:
anhedral granular
Place of Conservation of Type Material:
National School of Mines, Paris, France
Geological Setting of Type Material:
Late stage deposits cutting granites
Associated Minerals at Type Locality:
Reference:
Johan, Z., Picot, P., Ruhlmann, F. (1982): Evolution paragénétique de la minéralisation uranifère de Chaméane (Puy-de-Dôme), France: chaméanite, geffroyite et giraudite, trois séléniures nouveaux de Cu, Fe, Ag et As. Tschermaks Mineralogische und Petrographische Mitteilungen 29, 151-167 (in French)
Synonyms of Chaméanite
Other Language Names for Chaméanite
Related Minerals - Strunz-mindat Grouping
2.LA. | Gladkovskyite | MnTlAs3S6 |
2.LA. | Biagioniite | Tl2SbS2 |
2.LA. | Thunderbayite | TlAg3Au3Sb7S6 |
2.LA. | Auerbakhite | MnTl2As2S5 |
2.LA. | Ferrofettelite | [Ag6As2S7][Ag10FeAs2S8] |
2.LA.10 | Dervillite | Ag2AsS2 |
2.LA.15 | Daomanite | CuPtAsS2 |
2.LA.20 | Vaughanite | TlHgSb4S7 |
2.LA.25 | Criddleite | TlAg2Au3Sb10S10 |
2.LA.30 | Fettelite | [Ag6As2S7][Ag10HgAs2S8] |
2.LA.40 | Arcubisite | Ag6CuBiS4 |
2.LA.45 | Mgriite | Cu3AsSe3 |
2.LA.50 | Benleonardite | [Ag6(Sb,As)2S6Te][Ag9Cu(S,Te)2Te2] |
2.LA.55 | Tsnigriite | Ag9SbTe3S3 |
2.LA.60 | Borovskite | Pd3SbTe4 |
2.LA.65 | Jonassonite | AuBi5S4 |
2.LA.65 | Nuwaite | Ni6GeS2 |
2.LA.65 | Butianite | Ni6SnS2 |
2.LA.70 | Raberite | Tl5Ag4As6SbS15 |
2.LA.75 | Spaltiite | Tl2Cu2As2S5 |
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.
Internet Links for Chaméanite
mindat.org URL:
https://www.mindat.org/min-965.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
References for Chaméanite
Reference List:
Localities for Chaméanite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
Argentina | |
| Paar, Werner H., Topa, Dan, Roberts, Andrew C., Criddle, Alan J., Amann, Gerhard, Sureda, Ricardo J. (2002) The new mineral species brodtkorbite, Cu2HgSe2, and the associated selenide assemblage from Tuminico, Sierra de Cacho, La Rioja, Argentina. The Canadian Mineralogist, 40 (1) 225-237 doi:10.2113/gscanmin.40.1.225 |
Czech Republic | |
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France (TL) | |
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