Grandidierite and Cobaltite Physical Properties
Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.85-3.00
6.3
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
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
Perfect
{100} Good, {010} Good, {001} Good
Mohs Hardness
7.5
5.5
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
CoAsSAnthony et al , Handbook of mineralogy (2001)
Grandidierite and Cobaltite Chemical Formula
While comparing Grandidierite 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 Grandidierite and Cobaltite chemical formula.
- Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
- Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)
Grandidierite and Cobaltite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Grandidierite and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 6.3 whereas that of Cobaltite is 6.3.
