Biotite and Anglesite Physical Properties

Biotite

Anglesite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.7-3.36.30-6.39

1 7.18

1.5 Fracture

Uneven, Even, Yellow, White

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

Perfect on the {001}

[001] good, [210] distinct

1.7 Mohs Hardness

2.5-3.03-3.5

2 10

1.8 Chemical Composition

K(Mg,Fe++)3[AlSi3O10(OH,F)2

PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Biotite and Anglesite Chemical Formula

While comparing Biotite and Anglesite 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 Anglesite chemical formula.

Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
Chemical formula of Anglesite- PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Biotite and Anglesite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Biotite and Anglesite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Anglesite Optical Properties during the identification of gemstone. Specific gravity of Biotite is 6.30-6.39 whereas that of Anglesite is 6.30-6.39.