Calcioburbankite

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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