General Information:
Chemical Formula:
Cu+6Fe+++2Sn++++S8
Composition:
(Molecular Weight = 868.21 gm)
Iron 12.86 % Fe
Copper 43.92 % Cu
Tin 13.67 % Sn
Sulfur 29.55 % S
Empirical Formula:
Cu6Fe3+2SnS8
IMA Status:
Approved IMA 1965
Locality:
Mt. Lyell, Tasmainia and Tingha, NSW, Australia.
Name Origin:
Named for Douglas Mawson (1882-1958), Australian geologist and Antartic explorer.
Physical Properties:
Cleavage:
[???] Indistinct
Color:
brown orange or bronze.
Density:
4.66
Diaphaniety:
Opaque
Habits:
Microscopic Crystals - Crystals visible only with microscopes., ,
Hardness:
3.5-4 - Copper Penny-Flourite
Luster:
Metallic
More details...