Rhodesite

Formula: HKCa2Si8O19.5H2O

Origin of name: for C. Rhodes, British financier

 

Crystal system: orthorhombic

Crystal class: 2/m 2/m 2/m

Twinning: 

Unit cell: 

 

Colour: white

Diaphaneity: 

Luster: silky

Habit: fibrous, matted, silky, forming rosettes to 2 mm

Hardness: 4

Specific gravity: about 2.4

Cleavage: 1; {100} good

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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