Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.633.2-3.4
1
7.18
👆🏻
Fracture
Uneven
Uneven
Cleavage
{001} Perfect, {010} Good
Perfect on [001] imperfect on [100]
Mohs Hardness
6-6.53
2
10
👆🏻
Chemical Composition
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)