Hercynite and Apophyllite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.39
2.30-2.50
Fracture
ConchoidalGemdat.org, Uneven
Uneven, UnevenArthur Thomas, Gemstones (2009)
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
Perfect on (001)
Mohs Hardness
7.5-8
4.5-5
Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Hercynite and Apophyllite Chemical Formula
While comparing Hercynite and Apophyllite 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 Apophyllite chemical formula.
- Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Hercynite and Apophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hercynite and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.