Natrolite and Tourmaline Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.20-2.26
2.85-3.35
Fracture
Uneven, Brittle, Metallic, Gemstones (2009)
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Perfect on {110}
Indistinct
Mohs Hardness
5-5.5
7-7.5
Chemical Composition
Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Natrolite and Tourmaline Chemical Formula
While comparing Natrolite 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 Natrolite and Tourmaline chemical formula.
- Chemical formula of Natrolite- Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Natrolite and Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Natrolite and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Natrolite and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Natrolite is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.