Tenacity
-
Sectile
Solubility
-
Soluble
Durability
-
-
Specific Gravity
1.65-1.996.13
1
7.18
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Fracture
Uneven
Conchoidal
Cleavage
{010} Perfect, {110} Perfect
Distinct on {001} and {110}, indistinct on {100}
Mohs Hardness
2-2.52-3
2
10
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Chemical Composition
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Pb 2(CO 3)Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references