Hercynite and Grandidierite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.39
2.85-3.00
Fracture
ConchoidalGemdat.org, Uneven
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
Perfect
Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Hercynite and Grandidierite Chemical Formula
While comparing Hercynite and Grandidierite 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 Hercynite and Grandidierite chemical formula.
- Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Hercynite and Grandidierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hercynite and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.