Formula: Na3Sr(PO4)(CO3)
Origin of name: For Aldair Crawford, Scottish physician and chemist
Crystal system: Monoclinic
Crystal class: 2
Twinning:
Unit cell:
Colour: Colourless
Diaphaneity: Transparent to translucent
Luster: Vitreous (dull)
Habit: Irregular grains to 1mm
Hardness: 3
Specific gravity: 3.05
Cleavage:
Tenacity:
Streak: White
Synonyms/varieties:
Comments: Sr analogue of bradleyite, bonshtedite and sidorenkite; readily soluble in 10% HCl and in citric acid; fluoresces bright greenish yellow in UV light
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