Calcite and Hackmanite Physical Properties

Calcite

Hackmanite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.67-2.732.27-2.33

1 7.18

1.5 Fracture

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

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

35.5-6

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Calcite and Hackmanite Chemical Formula

While comparing Calcite and Hackmanite 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 Hackmanite chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Calcite and Hackmanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Hackmanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Hackmanite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 2.27-2.33 whereas that of Hackmanite is 2.27-2.33.