Sard and Goethite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
HCl soluble
Durability
Not Available
Not Available
Specific Gravity
2.58-2.63
4.27-4.29
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Cleavage
Not Available
Perfect {010}
Mohs Hardness
6.5-7
5-5.5
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
FeO(OH)Arthur Thomas , Gemstones (2009)
Sard and Goethite Chemical Formula
While comparing Sard 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 Sard and Goethite chemical formula.
- Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Sard and Goethite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sard and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sard and Goethite Optical Properties during the identification of gemstone. Specific gravity of Sard is 4.27-4.29 whereas that of Goethite is 4.27-4.29.