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Apatite
Apatite

Sphene
Sphene



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Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.16-3.23-9999
1 7.18
👆🏻

Fracture

Conchoidal, Uneven, Conchoidal to uneven
-

Cleavage

[0001] indistinct, [1010] indistinct
Perfect

Mohs Hardness

5-9999
2 10
👆🏻

Chemical Composition

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
CaTiSiO5