Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.793.95-4.10
1
7.18
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Fracture
-
Uneven
Cleavage
{100} and {010} perfect
{110} Perfect, {110} Perfect, {110} Perfect
Mohs Hardness
63.5-4
2
10
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Chemical Composition
LiNa(Zr,Ti,Hf)Si 6O 15Ulrich Henn and Claudio C.
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references