Gahnospinel and Goethite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
HCl soluble
Durability
Not Available
Not Available
Specific Gravity
3.65-4.55
4.27-4.29
Fracture
ConchoidalArthur Thomas, Gemstones (2009)
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Cleavage
None, but may exhibit slight parting
Perfect {010}
Mohs Hardness
7.5-8
5-5.5
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
FeO(OH)Arthur Thomas , Gemstones (2009)
Gahnospinel and Goethite Chemical Formula
While comparing Gahnospinel 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 Gahnospinel and Goethite chemical formula.
- Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Gahnospinel and Goethite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gahnospinel and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnospinel and Goethite Optical Properties during the identification of gemstone. Specific gravity of Gahnospinel is 4.27-4.29 whereas that of Goethite is 4.27-4.29.