General Information:
Chemical Formula:
Tl2Cu8,5Sb2S4
Composition:
(Molecular Weight = 708.00 gm)
Thallium 28.87 % Tl
Copper 44.88 % Cu
Antimony 17.20 % Sb
Sulfur 9.06 % S
Empirical Formula:
Cu5TlSbS2
IMA Status:
Approved IMA 1978
Locality:
Ilimaussaq intrusion, Greenland.
Name Origin:
Named for John Rose-Hansen, (1937-), Danish mineralogist.
Physical Properties:
Color:
steel gray.
Density:
7.78
Diaphaniety:
Opaque
Habits:
Microscopic Crystals - Crystals visible only with microscopes., Euhedral Crystals - Occurs as well-formed crystals showing good external form.,
Hardness:
3-3.5 - Calcite-Copper Penny
Luster:
Metallic
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