1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
insoluble in water
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.51-2.632.52-2.60
1
7.18
1.5 Fracture
Fibrous
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
1.6 Cleavage
Not Available
{0001} Imperfect, {1120} Imperfect
1.7 Mohs Hardness
1.8 Chemical Composition
Mg 3(Si 2O 5)(OH) 4Gemdat.org , Management Team (2012)
KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references