Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
6.50-7.002.60-2.64
1
7.18
👆🏻
Fracture
Irregular, Conchoidal
Uneven, Splintery, Conchoidal
Cleavage
On {011}, distinct; on {001}, {013}, indistinct
Absent
Mohs Hardness
36.5-7
2
10
👆🏻
Chemical Composition
PbMoO 4Walter Schumann , Gemstones of the world (2001)
SiO 2Arthur Thomas , Gemstones (2009)