Formula: (Rh,Pt,Pd)AsS
Origin of name: For S. Hollingworth, British geologist
Crystal system: Cubic
Crystal class: 2/m -3
Twinning:
Unit cell:
Colour: Medium gray
Diaphaneity: Opaque
Luster: Metallic
Habit: Grains, submicroscopic
Hardness: >6
Specific gravity: 7.91
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments: Series with irarsite
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