1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.04-3.173.62-4.20
1
7.18
1.5 Fracture
Uneven, Uneven, Gemstones of the world (2001) More from other references
ConchoidalGemdat.org, Management Team (2012), ConchoidalGemdat.org, Management Team (2012)
1.6 Cleavage
{001} Indistinct, {???} Indistinct
Not Available
1.7 Mohs Hardness
1.8 Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
(Fe,Mg) 3Al 2(SiO 4) 3gemdat.org , Management Team (2012)