Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.636.50-7.00
1
7.18
👆🏻
Fracture
Uneven
Irregular, Conchoidal
Cleavage
{001} Perfect, {010} Good
On {011}, distinct; on {001}, {013}, indistinct
Mohs Hardness
6-6.53
2
10
👆🏻
Chemical Composition
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
PbMoO 4Walter Schumann , Gemstones of the world (2001)