Stibiomicrolite

Formula: (Sb,Ca,Na)2(Ta,Nb)2O7

Origin of name: from Latin stibium = antimony and microlite

 

Crystal system: cubic

Crystal class: 4/m -3 2/m

Twinning:

Unit cell: 

 

Colour: greenish white to white

Diaphaneity: 

Luster: 

Habit: 

Hardness

Specific gravity

Cleavage: none

Tenacity: 

Streak: white

 

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Comments: 

 

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