Tenacity
Brittle
-
Solubility
Soluble
-
Durability
-
-
Specific Gravity
3.25-3.352.08-2.16
1
7.18
👆🏻
Fracture
Conchoidal, ConchoidalWalter Schumann
Irregular/uneven
Cleavage
Perfect in three directions
distinct/good on {1011}
Mohs Hardness
54.5
2
10
👆🏻
Chemical Composition
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaAl 2Si 4O 12 -6H 2OArthur Thomas , Gemstones (2009)