Moonstone and Biotite Physical Properties

Moonstone

Biotite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.56-2.602.7-3.3

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

Uneven, Even, Yellow, White

1.6 Cleavage

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

Perfect on the {001}

1.7 Mohs Hardness

6-6.52.5-3.0

2 10

1.8 Chemical Composition

Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

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

Moonstone and Biotite Chemical Formula

While comparing Moonstone 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 Moonstone and Biotite chemical formula.

Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈
Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

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Moonstone and Biotite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moonstone and Biotite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Biotite Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 2.7-3.3 whereas that of Biotite is 2.7-3.3.