Formula: (K,Na)2Pb(SO4)2
Origin of name: for L. Palmieri, Italian physicist
Crystal system: hexagonal
Crystal class: -3 2/m
Twinning:
Unit cell:
Colour: colourless, white
Diaphaneity:
Luster: vitreous, pearly on {0001}
Habit: hexagonal micaceous plates, microscopic
Hardness:
Specific gravity: 4.195 to 4.33
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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