1 Physical Properties
1.1 Tenacity
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1.2 Solubility
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1.3 Durability
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1.4 Specific Gravity
1.5 Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Sub-Conchoidal, Conchoidal, Brittle
1.6 Cleavage
Perfect on {100}, imperfect on {001}
Distinct on [110], parting on {221}
1.7 Mohs Hardness
1.8 Chemical Composition
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
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