Apophyllite KF and Calcite Physical Properties

Apophyllite KF

Calcite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.33-2.372.67-2.73

1 7.18

1.5 Fracture

Uneven, Brittle, Uneven, Brittle, Uneven

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

1.6 Cleavage

Perfect on {001}, imperfect on {110}

Perfect on [10 1 1] three directions with angle of 74° 55

1.7 Mohs Hardness

4.5-53

2 10

1.8 Chemical Composition

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

CaCO 3Ulrich Henn and Claudio C.

Apophyllite KF and Calcite Chemical Formula

While comparing Apophyllite KF and Calcite 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 Calcite chemical formula.

Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

Compare Green Gemstones

Apophyllite KF Vs Nepouite

Apophyllite KF Vs Hauyne

Apophyllite KF Vs Langbeinite

Apophyllite KF and Calcite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite KF and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite KF and Calcite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite KF is 2.67-2.73 whereas that of Calcite is 2.67-2.73.