Austinite and Tourmaline Physical Properties
Tenacity
Brittle
Not Available
Solubility
Easily soluble in cold dilute HCl
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.12
2.85-3.35
Fracture
Brittle, Uneven, Brittle, Uneven
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Good in two directions parallel to the prism faces {110}
Indistinct
Mohs Hardness
4-4.5
7-7.5
Chemical Composition
CaZn(AsO4)(OH)
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Austinite and Tourmaline Chemical Formula
While comparing Austinite 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 Austinite and Tourmaline chemical formula.
- Chemical formula of Austinite- CaZn(AsO4)(OH)
- Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Austinite and Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Austinite and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.