Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.6-5.762.98-3.10
1
7.18
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Fracture
Uneven
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Cleavage
[001] perfect; [100] distinct
[100] Perfect, [110] Good, [011] Distinct
Mohs Hardness
2.5-36
2
10
👆🏻
Chemical Composition
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references