Formula: TlFeS2
Origin of name: Named for Eugene Raguin (1900-), French geologist.
Crystal system: orthorhombic, pseudohexagonal
Crystal class: 2/m
Twinning:
Unit cell: a = 12.4, b = 10.44, c = 5.26
Colour: bronze
Diaphaneity: opaque
Luster: metallic
Habit: microscopic, pseudomorphs of an unknown mineral consisting of pseudohexagonal plates of bundles of fiber with pyrite
Hardness:
Specific gravity: 6.4
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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