Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
1.793.95-4.10
1
7.18
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Fracture
Uneven
Uneven
Cleavage
{110} Good
{110} Perfect, {110} Perfect, {110} Perfect
Mohs Hardness
2.53.5-4
2
10
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Chemical Composition
MgB 3O 3(OH) 5 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references