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Chaméanite

A valid IMA mineral species
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Formula:
(Cu,Fe)4As(Se,S)4
Colour:
Grey
Lustre:
Metallic
Hardness:
Specific Gravity:
6.17 (Calculated)
Crystal System:
Isometric
Name:
Named for the locality, Chaméane, Puy-de-Dôme, France
Possibly identical to mgriite.


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Unique IdentifiersHide

Mindat ID:
965
Long-form identifier:
mindat:1:1:965:4
GUID
(UUID V4):
32ad7a79-24c3-43e3-93b2-8043b3e7dfa2

IMA Classification of ChaméaniteHide

Classification of ChaméaniteHide

2.LA.35

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
3.1.34

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

Mineral SymbolsHide

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.

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

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 ChaméaniteHide

Type:
Isotropic
Reflectivity:
WavelengthR
400nm27.4%
420nm27.1%
440nm26.8%
460nm26.5%
480nm26.1%
500nm26.6%
520nm26.9%
540nm27.1%
560nm27.3%
580nm27.5%
600nm27.7%
620nm27.8%
640nm28.0%
660nm28.2%
680nm28.4%
700nm28.7%

Reflectance graph
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 ChaméaniteHide

Mindat Formula:
(Cu,Fe)4As(Se,S)4

Crystallography of ChaméaniteHide

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 DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
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 EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of ChaméaniteHide

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 ChaméaniteHide

Other Language Names for ChaméaniteHide

Simplified Chinese:砷硒铜矿
Traditional Chinese:砷硒銅礦

Related Minerals - Strunz-mindat GroupingHide

2.LA.GladkovskyiteMnTlAs3S6Trig. 3m : R3c
2.LA.BiagioniiteTl2SbS2Mon. m : Pb
2.LA.ThunderbayiteTlAg3Au3Sb7S6Tric. 1 : P1
2.LA.AuerbakhiteMnTl2As2S5Orth.
2.LA.Ferrofettelite[Ag6As2S7][Ag10FeAs2S8]Mon. 2 : B2
2.LA.10DervilliteAg2AsS2Mon. 2/m : P2/b
2.LA.15DaomaniteCuPtAsS2Orth.
2.LA.20VaughaniteTlHgSb4S7Tric.
2.LA.25CriddleiteTlAg2Au3Sb10S10Mon.
2.LA.30Fettelite[Ag6As2S7][Ag10HgAs2S8] Mon. 2 : B2
2.LA.40ArcubisiteAg6CuBiS4
2.LA.45MgriiteCu3AsSe3Iso. m3m (4/m 3 2/m)
2.LA.50Benleonardite[Ag6(Sb,As)2S6Te][Ag9Cu(S,Te)2Te2]Trig. 3m (3 2/m) : P3m1
2.LA.55TsnigriiteAg9SbTe3S3Mon.
2.LA.60BorovskitePd3SbTe4Iso.
2.LA.65JonassoniteAuBi5S4Mon.
2.LA.65NuwaiteNi6GeS2Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
2.LA.65ButianiteNi6SnS2Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
2.LA.70RaberiteTl5Ag4As6SbS15 Tric. 1 : P1
2.LA.75SpaltiiteTl2Cu2As2S5Mon. 2/m : P21/b

Other InformationHide

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 ChaméaniteHide

References for ChaméaniteHide

Reference List:

Localities for ChaméaniteHide

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.

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.
Argentina
 
  • La Rioja Province
    • General Lamadrid Department
      • Villa Castelli
        • Sierra de Cacho
Czech Republic
 
  • Central Bohemian Region
      • Háje
  • Plzeň Region
    • Klatovy District
      • Nalžovské Hory
        • Ústaleč
  • South Bohemian Region
    • Písek District
      • Kovářov
        • Předbořice
France (TL)
 
  • Auvergne-Rhône-Alpes
    • Puy-de-Dôme
      • Issoire
        • Le Vernet-Chaméane
 
and/or  
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