Formula: Sr9Mg(PO3OH)(PO4)6
Origin of name: from strontium and whitlockite
Crystal system: hexagonal
Crystal class: 3m
Twinning:
Unit cell:
Colour: white
Diaphaneity: translucent
Luster: dull
Habit: pipelike or tubular to 20 micron by 2 mm, tabular crystals 5 to 8 micron in rose-like aggregates
Hardness:
Specific gravity: 3.64
Cleavage: 1; {001} moderate or parting
Tenacity:
Streak: white
Synonyms/varieties:
Comments: Sr analogue of whitlockite
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