Formula: PbZnSiO4
Origin of name: For E. Larsen Jr., American petrologist
Crystal system: Orthorhombic
Crystal class: mm2
Twinning:
Unit cell:
Colour: White
Diaphaneity: Transparent
Luster: Adamantine
Habit: Crystals slender prismatic, vertically striated, or tabular
Hardness: 3
Specific gravity: 2.90 to 5.90
Cleavage: 1; {120} distinct
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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