Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.70-4.103.19-3.56
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven, Conchoidal
Cleavage
none
{110} Perfect, {010} Indistinct
Mohs Hardness
6.5-75.5-6
2
10
👆🏻
Chemical Composition
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)