1 Physical Properties
0.1 Tenacity
Not Available
Not Available
1.3 Solubility
Not Available
Not Available
1.5 Durability
Not Available
Not Available
1.8 Specific Gravity
1.16 Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
1.17 Cleavage
{101} Distinct
Perfect on {100}, imperfect on {001}
1.18 Mohs Hardness
1.19 Chemical Composition
ThCa 2Si 8O 20Walter Schumann , Gemstones of the world (2001) More from other references
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)