General Information:
Chemical Formula:Tl3AsS3
Composition:(Molecular Weight = 784.27 gm)Thallium 78.18 %
TlArsenic 9.55 %
AsSulfur 12.27 %
S Empirical Formula: Tl3AsS3
IMA Status:Approved IMA 1979
Locality:Carlin gold deposit, Eureka County, Nevada, USA.
Name Origin:Named for Albert J. Ellis (1929-), New Zealand geochemist.
Physical Properties: Cleavage:[1011] Perfect, [1011] Perfect, [1011] Perfect
Color:dark gray.
Density:7.1
Diaphaniety:Opaque
Habits:Rhombohedral Crystals - Occurs as well-formed crystals showing rhobohedral crystals., ,
Hardness:2 - Gypsum
Luster:Metallic
Streak:pale brown
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