Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
6.5-7.12.9
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Fibrous
Cleavage
Imperfect- [10 1 1]
[010] Perfect, [100] Distinct, [011] Distinct
Mohs Hardness
3.5-42
2
10
👆🏻
Chemical Composition
Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Amethyst, Clear Quartz, Smoky Quartz, Cacoxenite, Rutile, Geothite, Lepidocrocite