Formula: Pb8Cu(AsO3)2O3Cl5
Origin of name: For Robert L. Freed, American mineralogist
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Greenish yellow
Diaphaneity:
Luster: Greasy, vitreous
Habit: Aggregates with slightly radial structure
Hardness: 3
Specific gravity: 7.0
Cleavage: 1; {100} perfect
Tenacity:
Streak: Yellow
Synonyms/varieties:
Comments:
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