Formula: SrAl3(PO4)(SO4)(OH)6
Origin of name: for Lars Svanberg, Swedish mineralogist
Crystal system: hexagonal
Crystal class: -3 2/m
Twinning:
Unit cell: a = 6.97 Å, c = 16.60 Å
Colour: colourless to yellow, rose, reddish brown
Diaphaneity:
Luster: vitreous to adamantine
Habit: crystals rhombohedral or pseudocubic
Hardness: 5
Specific gravity: 3.22
Cleavage: 1; {0001} distinct
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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