Almandine and Calcite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.95-4.30
2.67-2.73
Fracture
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
none
Perfect on [10 1 1] three directions with angle of 74° 55
Chemical Composition
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
CaCO 3Ulrich Henn and Claudio C.
Almandine and Calcite Chemical Formula
While comparing Almandine 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 Almandine and Calcite chemical formula.
- Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Almandine and Calcite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Almandine and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Calcite Optical Properties during the identification of gemstone. Specific gravity of Almandine is 2.67-2.73 whereas that of Calcite is 2.67-2.73.