Formula: CaSbS
Origin of name: from Greek para = similar and costibite
Crystal system: orthorhombic
Crystal class: mm2
Twinning:
Unit cell:
Colour: in reflected light white with faint grayish tint
Diaphaneity: opaque
Luster: metallic
Habit: irregular and subhedral grains, to 130 micron
Hardness: 6.5
Specific gravity: 6.9 to 7.1
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments: dimorphous with costibite
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