Calcite and Hardystonite Physical Properties

Calcite

Hardystonite

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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

2.67-2.733.396-3.443

1 7.18

1.5 Fracture

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

Brittle, Metallic

1.6 Cleavage

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

[001] good, [100] and [110] fair

1.7 Mohs Hardness

33-4

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Calcite and Hardystonite Chemical Formula

While comparing Calcite and Hardystonite 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 Calcite and Hardystonite chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

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Calcite and Hardystonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Hardystonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Hardystonite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 3.396-3.443 whereas that of Hardystonite is 3.396-3.443.