Biotite and Celestine Physical Properties

Biotite

Celestine

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.7-3.33.90-4.00

1 7.18

1.5 Fracture

Uneven, Even, Yellow, White

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

1.6 Cleavage

Perfect on the {001}

Perfect on {001}, good on {210}, poor on {010}

1.7 Mohs Hardness

2.5-3.03-3.5

2 10

1.8 Chemical Composition

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

SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Biotite and Celestine Chemical Formula

While comparing Biotite and Celestine 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 Celestine chemical formula.

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

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Biotite and Celestine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Biotite and Celestine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Celestine Optical Properties during the identification of gemstone. Specific gravity of Biotite is 3.90-4.00 whereas that of Celestine is 3.90-4.00.