General Information:
Chemical Formula:
Cu1.78S
Composition:
(Molecular Weight = 145.18 gm)
Copper 77.91 % Cu
Sulfur 22.09 % S
Empirical Formula:
Cu1.78S
Environment:
Products of corrosion of a 1375 BC bronze harpoon head from a shipwreck.
IMA Status:
Approved IMA
Locality:
Roxby Downs, AS, Australia. Eastern Mediterranean Sea.
Name Origin:
Named from the locality.
Physical Properties:
Cleavage:
[100] Poor
Color:
bluish black.
Density:
5.555
Diaphaniety:
Opaque
Habits:
Powdery - Forms a loose, poorly-coherent pulverulent mass., Aggregates - Made of numerous individual crystals or clusters.,
Hardness:
2.5-3 - Finger Nail-Calcite
Luster:
Metallic - Dull
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