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Rosasite
Rosasite

Sapphire
Sapphire



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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Effervesces in cold
-
4-4.2
Splintery
Perfect on {100} and {010}
4
CuZn(CO3)(OH)2
 
-
insoluble
-
3.95-4.03
Uneven
None, but may exhibit parting
9
Al 2 O 3