Formula: (Tl,Cu)(Zn,Fe,Hg)AsS3
Origin of name: for Hans-Anton Stalder, Swiss mineral curator
Crystal system: tetragonal
Crystal class: 4/m 2/m 2/m
Twinning:
Unit cell:
Colour: bluish gray tarnish
Diaphaneity:
Luster:
Habit: prismatic crystals smaller than 1 mm
Hardness:
Specific gravity:
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments: Zn analogue of routhierite
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