Polyhalite and Apophyllite KF Physical Properties

Polyhalite

Apophyllite KF

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.782.33-2.37

1 7.18

1.5 Fracture

Conchoidal, Brittle

Uneven, Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

Perfect on {10 1 }; parting on {010}

Perfect on {001}, imperfect on {110}

1.7 Mohs Hardness

3.54.5-5

2 10

1.8 Chemical Composition

Not Available

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Polyhalite and Apophyllite KF Chemical Formula

While comparing Polyhalite and Apophyllite KF 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 Polyhalite and Apophyllite KF chemical formula.

Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)

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Polyhalite and Apophyllite KF Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Apophyllite KF Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Apophyllite KF Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 2.33-2.37 whereas that of Apophyllite KF is 2.33-2.37.