Calcite and Smithsonite Physical Properties

Calcite

Smithsonite

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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

2.67-2.734.00-4.65

1 7.18

1.5 Fracture

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

Uneven, Sub-Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic

1.6 Cleavage

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

Perfect on [1011]

1.7 Mohs Hardness

35-5.5

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Calcite and Smithsonite Chemical Formula

While comparing Calcite and Smithsonite 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 Smithsonite chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Smithsonite- ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Calcite and Smithsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Smithsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Smithsonite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 4.00-4.65 whereas that of Smithsonite is 4.00-4.65.