1 Physical Properties
1.1 Tenacity
1.4 Solubility
insoluble in water
Not Available
1.10 Durability
Not Available
Not Available
1.12 Specific Gravity
2.51-2.634.32-4.48
1
7.18
1.13 Fracture
Fibrous
Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic
1.14 Cleavage
Not Available
{101}, good; {010}, poor
1.15 Mohs Hardness
1.18 Chemical Composition
Mg 3(Si 2O 5)(OH) 4Gemdat.org , Management Team (2012)
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)