Formula: Pb(Cu,Fe,Al)3(SO4)2(OH)6
Origin of name: After locality; Horn Silver mine, Beaver County, Utah
Crystal system: Hexagonal
Crystal class: -3 2/m
Twinning:
Unit cell:
Colour: Canary-yellow
Diaphaneity:
Luster:
Habit: Crystals microscopic hexagonal plates forming earthy and friable masses
Hardness:
Specific gravity: 4.36
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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