Calcite and Smoky Quartz Physical Properties

Calcite

Smoky Quartz

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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

2.67-2.73

2.65

1.5 Fracture

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

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

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

{0110} Indistinct

1.7 Mohs Hardness

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

SiO₂

Calcite and Smoky Quartz Chemical Formula

While comparing Calcite and Smoky Quartz 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 Smoky Quartz chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Smoky Quartz- SiO₂

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Calcite and Smoky Quartz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Smoky Quartz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Smoky Quartz Optical Properties during the identification of gemstone. Specific gravity of Calcite is 2.65 whereas that of Smoky Quartz is 2.65.