Formula: ZnS
Origin of name: From locality; Matra Mnts., Hungary
Crystal system: Hexagonal
Crystal class: 3m
Twinning:
Unit cell:
Colour: Brownish yellow
Diaphaneity: Transparent
Luster: Vitreous
Habit: Crystals pyramidal, intergrown with sphalerite forming sceptre-shaped aggregated
Hardness: 3.5 to 4
Specific gravity:
Cleavage: 1; {10-10} distinct
Tenacity:
Streak:
Synonyms/varieties:
Comments: Trimorphous with sphalerite and wurtzite
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