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, Brittle, Metallic, Gemstones (2009)
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
1.6 Cleavage
Perfect on {110}
Perfect on {100}, imperfect on {001}
1.7 Mohs Hardness
1.8 Chemical Composition
Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)