Carnelian and Goethite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
HCl soluble
Durability
Not Available
Not Available
Specific Gravity
2.58-2.64
4.27-4.29
Fracture
Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Cleavage
Absent
Perfect {010}
Mohs Hardness
6.5-7
5-5.5
Chemical Composition
SiO2
FeO(OH)Arthur Thomas , Gemstones (2009)
Carnelian and Goethite Chemical Formula
While comparing Carnelian 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 Carnelian and Goethite chemical formula.
- Chemical formula of Carnelian- SiO2
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Carnelian and Goethite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Carnelian and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnelian and Goethite Optical Properties during the identification of gemstone. Specific gravity of Carnelian is 4.27-4.29 whereas that of Goethite is 4.27-4.29.