Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.633.04-3.17
1
7.18
👆🏻
Fracture
Uneven
Uneven
Cleavage
{001} Perfect, {010} Good
{001} Indistinct, {???} Indistinct
Mohs Hardness
6-6.55.5
2
10
👆🏻
Chemical Composition
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references