Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.636.30-6.39
1
7.18
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Fracture
Uneven
Conchoidal
Cleavage
{001} Perfect, {010} Good
[001] good, [210] distinct
Mohs Hardness
6-6.53-3.5
2
10
👆🏻
Chemical Composition
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references