Formula: Na3(Ca,REE,Sr)3(CO3)5
Origin of name: From Calcium and Burbankite
Crystal system: Hexagonal
Crystal class: 6mm
Twinning:
Unit cell:
Colour: Deep orange to light pink
Diaphaneity: Translucent
Luster: Vitreous
Habit: Subhedral prismatic crystals up to 1.8 x 2 x 2 cm
Hardness: 3 to 4
Specific gravity: 3.45
Cleavage: 1; {100} indistinct
Tenacity:
Streak: White
Synonyms/varieties:
Comments: Rapidly soluble in HCl
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