Onyx and Cobaltite Physical Properties
Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.70
6.3
Fracture
Not Available
UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic
Cleavage
Indiscernible
{100} Good, {010} Good, {001} Good
Mohs Hardness
6.5-7
5.5
Chemical Composition
SiO2
CoAsSAnthony et al , Handbook of mineralogy (2001)
Onyx and Cobaltite Chemical Formula
While comparing Onyx and Cobaltite 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 Onyx and Cobaltite chemical formula.
- Chemical formula of Onyx- SiO2
- Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)
Onyx and Cobaltite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Onyx and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Onyx is 6.3 whereas that of Cobaltite is 6.3.
