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Phlogopite
Phlogopite

Shortite
Shortite



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Phlogopite
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Shortite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Tough
-
-
2.78-2.85
Uneven
Perfect basal (001)
2-2.5
KMg3(Si3Al)O10(F,OH)2
 
-
-
-
2.61
Conchoidal
{010} Distinct
3
Na 2Ca 2(CO 3) 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references