Andesine and Melanite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65-2.69
3.70-4.10
Fracture
Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Perfect on {001}, good on {010}
Not Available
Mohs Hardness
6-6.5
6.5-7
Chemical Composition
(Na,Ca)Al1-2Si3-2O8
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Andesine and Melanite Chemical Formula
While comparing Andesine and Melanite 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 Andesine and Melanite chemical formula.
- Chemical formula of Andesine- (Na,Ca)Al1-2Si3-2O8
- Chemical formula of Melanite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Andesine and Melanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Andesine and Melanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andesine and Melanite Optical Properties during the identification of gemstone. Specific gravity of Andesine is 3.70-4.10 whereas that of Melanite is 3.70-4.10.