Biotite and Bloodstone Heliotrope Physical Properties

Biotite

Bloodstone Heliotrope

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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

2.7-3.32.55-2.70

1 7.18

1.5 Fracture

Uneven, Even, Yellow, White

Not Available

1.6 Cleavage

Perfect on the {001}

Not Available

1.7 Mohs Hardness

2.5-3.06.5-7

2 10

1.8 Chemical Composition

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

SiO 2Arthur Thomas , Gemstones (2009)

Biotite and Bloodstone Heliotrope Chemical Formula

While comparing Biotite and Bloodstone Heliotrope 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 Bloodstone Heliotrope chemical formula.

Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
Chemical formula of Bloodstone Heliotrope- SiO 2Arthur Thomas , Gemstones (2009)

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Biotite and Bloodstone Heliotrope Specific Gravity

Another important criteria for qualitative analysis of gemstones is Biotite and Bloodstone Heliotrope Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Bloodstone Heliotrope Optical Properties during the identification of gemstone. Specific gravity of Biotite is 2.55-2.70 whereas that of Bloodstone Heliotrope is 2.55-2.70.