Apophyllite and Calcite Physical Properties

Apophyllite

Calcite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.30-2.502.67-2.73

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Perfect on (001)

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

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

CaCO 3Ulrich Henn and Claudio C.

Apophyllite and Calcite Chemical Formula

While comparing Apophyllite 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 and Calcite chemical formula.

Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

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Apophyllite and Calcite Specific Gravity

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