Formula: Pb2 (Fe, Al) H (PO4)2 (OH)2
Origin of name: For J. Drugman
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Color: Colourless, pale-yellow
Diaphaneity: transparent
Luster:
Habit: Crystals platy, in bunched aggregates
Hardness: <6
Specific gravity: 5.55
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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