Schorl and Calcite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.18-3.22
2.67-2.73
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
{1011} Indistinct
Perfect on [10 1 1] three directions with angle of 74° 55
Mohs Hardness
Not Available
3
Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
CaCO 3Ulrich Henn and Claudio C.
Schorl and Calcite Chemical Formula
While comparing Schorl 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 Schorl and Calcite chemical formula.
- Chemical formula of Schorl- Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Schorl and Calcite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Schorl and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Calcite Optical Properties during the identification of gemstone. Specific gravity of Schorl is 2.67-2.73 whereas that of Calcite is 2.67-2.73.