Andesine and Hercynite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65-2.69
4.39
Fracture
Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)
ConchoidalGemdat.org, Uneven
Cleavage
Perfect on {001}, good on {010}
{111} Indistinct, {111} Indistinct, {111} Indistinct
Mohs Hardness
6-6.5
7.5-8
Chemical Composition
(Na,Ca)Al1-2Si3-2O8
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Andesine and Hercynite Chemical Formula
While comparing Andesine and Hercynite 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 Hercynite chemical formula.
- Chemical formula of Andesine- (Na,Ca)Al1-2Si3-2O8
- Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Andesine and Hercynite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Andesine and Hercynite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andesine and Hercynite Optical Properties during the identification of gemstone. Specific gravity of Andesine is 4.39 whereas that of Hercynite is 4.39.