Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.576.50-7.00
1
7.18
👆🏻
Fracture
Uneven
Irregular, Conchoidal
Cleavage
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
On {011}, distinct; on {001}, {013}, indistinct
Mohs Hardness
6-6.53
2
10
👆🏻
Chemical Composition
KAlSi3O8
PbMoO 4Walter Schumann , Gemstones of the world (2001)