Calcite and Tanzanite Physical Properties

Calcite

Tanzanite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

Hard

1.4 Specific Gravity

2.67-2.73

3.35

1.5 Fracture

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

Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

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

Perfect {010}, imperfect {100}

1.7 Mohs Hardness

6.5-7

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

Ca₂Al₃(SiO₄)₃(OH)

Calcite and Tanzanite Chemical Formula

While comparing Calcite and Tanzanite 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 Tanzanite chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)

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Calcite and Tanzanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Tanzanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Tanzanite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 3.35 whereas that of Tanzanite is 3.35.