Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.19-3.566.50-7.00
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Irregular, Conchoidal
Cleavage
{110} Perfect, {010} Indistinct
On {011}, distinct; on {001}, {013}, indistinct
Mohs Hardness
5.5-63
2
10
👆🏻
Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
PbMoO 4Walter Schumann , Gemstones of the world (2001)