Lazulite and Alunite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.04-3.17
2.6-2.9
Fracture
Uneven, Uneven, Gemstones of the world (2001) More from other references
Conchoidal, Uneven
Cleavage
{001} Indistinct, {???} Indistinct
On {0001}, perfect
Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
KAl3(SO4)2(OH)6
Lazulite and Alunite Chemical Formula
While comparing Lazulite and Alunite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Lazulite and Alunite chemical formula.
- Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
- Chemical formula of Alunite- KAl3(SO4)2(OH)6
Lazulite and Alunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Lazulite and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Alunite Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 2.6-2.9 whereas that of Alunite is 2.6-2.9.