Formula: Pb(TeO4,SO4).H2O
Origin of name: for Ed Schieffelin, American prospector
Crystal system: orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: colourless
Diaphaneity: transparent
Luster: adamantine
Habit: crystals tabular to scaly, to 1 mm
Hardness: 2
Specific gravity: 4.98
Cleavage: 1; {010} good
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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