Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.322.97-3.03
1
7.18
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Fracture
-
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
{???} Distinct, {???} Distinct, {???} Distinct
{001} Poor
Mohs Hardness
-99997
2
10
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Chemical Composition
LiFe3+ (PO 4)(OH)Anthony et al , Handbook of mineralogy (2001)
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references