Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.60-2.643.1-3.5
1
7.18
👆🏻
Fracture
Uneven, Splintery, Conchoidal
Granular
Cleavage
Absent
None
Mohs Hardness
6.5-75-6
2
10
👆🏻
Chemical Composition
SiO 2Arthur Thomas , Gemstones (2009)
Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)