Grandidierite and Jacobsite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.85-3.00
4.76-5.03
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Conchoidal, Brittle
Mohs Hardness
7.5
5.5-6.5
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Grandidierite and Jacobsite Chemical Formula
While comparing Grandidierite and Jacobsite 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 Jacobsite chemical formula.
- Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
- Chemical formula of Jacobsite- (Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Grandidierite and Jacobsite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Grandidierite and Jacobsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Jacobsite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 4.76-5.03 whereas that of Jacobsite is 4.76-5.03.