Biotite and Amblygonite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.7-3.3
2.98-3.10
Fracture
Uneven, Even, Yellow, White
Sub-Conchoidal, Irregular/uneven, Sub-Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Perfect on the {001}
[100] Perfect, [110] Good, [011] Distinct
Chemical Composition
K(Mg,Fe++)3[AlSi3O10(OH,F)2
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Biotite and Amblygonite Chemical Formula
While comparing Biotite and Amblygonite 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 Biotite and Amblygonite chemical formula.
- Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
- Chemical formula of Amblygonite- (Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Biotite and Amblygonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Biotite and Amblygonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Amblygonite Optical Properties during the identification of gemstone. Specific gravity of Biotite is 2.98-3.10 whereas that of Amblygonite is 2.98-3.10.