Formula: Ca4Nb6Si5O24(OH)10 . 5-6H2O
Origin of name: Form locality; Mongolia
Crystal system: Tetragonal
Crystal class: Unknown
Twinning:
Unit cell:
Colour: Pale lilac to grayish blue
Diaphaneity:
Luster: Silky
Habit: Mica-like aggregates of scales
Hardness: 2
Specific gravity: 3.15
Cleavage: 1; Good
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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