Andesine and Goethite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
HCl soluble
Durability
Not Available
Not Available
Specific Gravity
2.65-2.69
4.27-4.29
Fracture
Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Cleavage
Perfect on {001}, good on {010}
Perfect {010}
Mohs Hardness
6-6.5
5-5.5
Chemical Composition
(Na,Ca)Al1-2Si3-2O8
FeO(OH)Arthur Thomas , Gemstones (2009)
Andesine and Goethite Chemical Formula
While comparing Andesine and Goethite 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 Goethite chemical formula.
- Chemical formula of Andesine- (Na,Ca)Al1-2Si3-2O8
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Andesine and Goethite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Andesine and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andesine and Goethite Optical Properties during the identification of gemstone. Specific gravity of Andesine is 4.27-4.29 whereas that of Goethite is 4.27-4.29.