Tourmaline and Allanite Physical Properties
Tenacity
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Solubility
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Durability
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Specific Gravity
2.85-3.35
3.40-4.20
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Not Available
Cleavage
Indistinct
Not Available
Mohs Hardness
7-7.5
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Chemical Composition
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 Allanite Chemical Formula
While comparing Tourmaline and Allanite 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 Allanite 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 Allanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tourmaline and Allanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Allanite Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 3.40-4.20 whereas that of Allanite is 3.40-4.20.