Tourmaline and Bertrandite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.85-3.35
2.59-2.60
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Brittle, Metallic, Brittle, Metallic
Cleavage
Indistinct
{001} Perfect, {110} Distinct, {101} Distinct
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Tourmaline and Bertrandite Chemical Formula
While comparing Tourmaline and Bertrandite 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 Bertrandite 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.
- Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Tourmaline and Bertrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tourmaline and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.