Lazulite and Biotite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.04-3.17
2.7-3.3
Fracture
Uneven, Uneven, Gemstones of the world (2001) More from other references
Uneven, Even, Yellow, White
Cleavage
{001} Indistinct, {???} Indistinct
Perfect on the {001}
Mohs Hardness
5.5
2.5-3.0
Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
K(Mg,Fe++)3[AlSi3O10(OH,F)2
Lazulite and Biotite Chemical Formula
While comparing Lazulite and Biotite 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 Biotite 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 Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
Lazulite and Biotite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Lazulite and Biotite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Biotite Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 2.7-3.3 whereas that of Biotite is 2.7-3.3.