Norbergite and Tourmaline Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.177
2.85-3.35
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
{???} Distinct
Indistinct
Mohs Hardness
6-6.5
7-7.5
Chemical Composition
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Norbergite and Tourmaline Chemical Formula
While comparing Norbergite and Tourmaline 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 Norbergite and Tourmaline chemical formula.
- Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
- Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Norbergite and Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Norbergite and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Norbergite and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Norbergite is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.