Apophyllite KF and Biotite Physical Properties

Apophyllite KF

Biotite

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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

2.33-2.372.7-3.3

1 7.18

1.5 Fracture

Uneven, Brittle, Uneven, Brittle, Uneven

Uneven, Even, Yellow, White

1.6 Cleavage

Perfect on {001}, imperfect on {110}

Perfect on the {001}

1.7 Mohs Hardness

4.5-52.5-3.0

2 10

1.8 Chemical Composition

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

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

Apophyllite KF and Biotite Chemical Formula

While comparing Apophyllite KF 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 Apophyllite KF and Biotite chemical formula.

Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)
Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

Compare Green Gemstones

Apophyllite KF Vs Langbeinite

Apophyllite KF Vs Nepouite

Apophyllite KF Vs Hauyne

Apophyllite KF and Biotite Specific Gravity

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