Tourmaline and Polyhalite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.85-3.35
2.78
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Brittle
Cleavage
Indistinct
Perfect on {10 1 }; parting on {010}
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Not Available
Tourmaline and Polyhalite Chemical Formula
While comparing Tourmaline and Polyhalite 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 Tourmaline and Polyhalite chemical formula.
- Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
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Tourmaline and Polyhalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tourmaline and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 2.78 whereas that of Polyhalite is 2.78.