Spinel and Calcite Physical Properties

Spinel

Calcite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

none

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.64-3.662.67-2.73

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

None, but may exhibit slight parting

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

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

MgAl₂O₄

CaCO 3Ulrich Henn and Claudio C.

Spinel and Calcite Chemical Formula

While comparing Spinel and Calcite 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 Spinel and Calcite chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

Compare Gems for Scorpio

Spinel Vs Charoite

Spinel Vs Azurmalachite

Spinel Vs Ametrine

Spinel and Calcite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Calcite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 2.67-2.73 whereas that of Calcite is 2.67-2.73.