Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
6.5-7.15.00-5.30
1
7.18
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Fracture
Uneven, Conchoidal
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
Imperfect- [10 1 1]
None, may show partings on {0001} and {10 1 1}
Mohs Hardness
3.5-46
2
10
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Chemical Composition
Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Fe 2O 3Arthur Thomas , Gemstones (2009)