General Information:
Chemical Formula:
Ag3AsS3
Composition:
(Molecular Weight = 494.72 gm)
Silver 65.41 % Ag
Arsenic 15.14 % As
Sulfur 19.44 % S
Empirical Formula:
Ag3AsS3
Locality:
Freiberg, Germany.
Name Origin:
From the Greek xanthos, "yellow" and konis "powder."
Physical Properties:
Cleavage:
[001] Distinct
Color:
dark crimson red, dark orange, brown, or lemon yellow.
Density:
5.5 - 5.6, Average = 5.55
Diaphaniety:
Subtranslucent to opaque
Habits:
Massive - Granular - Common texture observed in granite and other igneous rock., Reniform - "Kidney like" in shape (e.g.. hematite)., Tabular - Form dimensions are thin in one directi on.
Hardness:
2.5-3 - Finger Nail-Calcite
Luminescence:
None.
Luster:
Adamantine
Streak:
orange yellow
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