Hercynite and Creedite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.39
2.70
Fracture
ConchoidalGemdat.org, Uneven
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
Perfect on {100}
Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.
Hercynite and Creedite Chemical Formula
While comparing Hercynite and Creedite 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 Creedite chemical formula.
- Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.
Hercynite and Creedite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hercynite and Creedite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Creedite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 2.70 whereas that of Creedite is 2.70.