1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Uneven, Even, Yellow, White
Uneven, Uneven, Gemstones of the world (2001) More from other references
1.6 Cleavage
Perfect on the {001}
{001} Indistinct, {???} Indistinct
1.7 Mohs Hardness
1.8 Chemical Composition
K(Mg,Fe++)3[AlSi3O10(OH,F)2
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references