Calcite and Spodumene Physical Properties

Calcite

Spodumene

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.67-2.73

3.15-3.21

1.5 Fracture

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

Uneven, Subconchoidal, Gemstones (2009)

1.6 Cleavage

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

Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°

1.7 Mohs Hardness

6-7

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

LiAlSi₂O₆

Calcite and Spodumene Chemical Formula

While comparing Calcite and Spodumene 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 Spodumene chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Spodumene- LiAlSi₂O₆

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Calcite and Spodumene Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Calcite is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.