Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
6.50-7.002.55-2.63
1
7.18
👆🏻
Fracture
Irregular, Conchoidal
Uneven
Cleavage
On {011}, distinct; on {001}, {013}, indistinct
{001} Perfect, {010} Good
Mohs Hardness
36-6.5
2
10
👆🏻
Chemical Composition
PbMoO 4Walter Schumann , Gemstones of the world (2001)
KAlSi 3O 8Arthur Thomas , Gemstones (2009)