Calcite and Labradorite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.67-2.73
2.69-2.72
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Cleavage
Perfect on [10 1 1] three directions with angle of 74° 55
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Chemical Composition
CaCO 3Ulrich Henn and Claudio C.
(Na,Ca)1-2Si3-2O8
Calcite and Labradorite Chemical Formula
While comparing Calcite and Labradorite 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 Labradorite chemical formula.
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
Calcite and Labradorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Calcite and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.