1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Uneven, ConchoidalArthur Thomas, Brittle, Metallic
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
Imperfect- [10 1 1]
From the Greek for oblique and fracture, descriptive of the cleavage
1.7 Mohs Hardness
2.5 Chemical Composition
Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
(Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)