Chemical Formula:
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(Cu,Zn,Ag)12(As,Sb)4(Se,S)13 |
Composition:
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Molecular Weight = 2042.97 g |
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Sulfur |
5.10 % |
S |
0.00 % |
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0.00 % |
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Copper |
22.40 % |
Cu |
0.00 % |
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0.00 % |
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Zinc |
11.52 % |
Zn |
0.00 % |
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0.00 % |
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Arsenic |
11.00 % |
As |
0.00 % |
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0.00 % |
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Selenium |
37.68 % |
Se |
0.00 % |
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0.00 % |
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Silver |
6.34 % |
Ag |
0.00 % |
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0.00 % |
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Antimony |
5.96 % |
Sb |
0.00 % |
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0.00 % |
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100.00 % |
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Empirical Formula:
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Cu7.2Zn3.6Ag1.2As3SbSe9.75S3.25 |
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Environment:
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As late stage deposits in veins cutting granite |
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Locality:
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From Chameane, Puy-de-Dome, France.. Link to
MinDat.org
Location Data.
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Name Origin:
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To honor Roger Giraud, of the electron microprobe laboratory of the B.R.G.M.-C.N.R.S. in Orleans, France |
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Synonym:
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