Andesine and Bertrandite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65-2.69
2.59-2.60
Fracture
Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)
Brittle, Metallic, Brittle, Metallic
Cleavage
Perfect on {001}, good on {010}
{001} Perfect, {110} Distinct, {101} Distinct
Chemical Composition
(Na,Ca)Al1-2Si3-2O8
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Andesine and Bertrandite Chemical Formula
While comparing Andesine 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 Andesine and Bertrandite chemical formula.
- Chemical formula of Andesine- (Na,Ca)Al1-2Si3-2O8
- Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Andesine and Bertrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Andesine and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andesine and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Andesine is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.