Hercynite and Nosean Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.39
2.30-2.40
Fracture
ConchoidalGemdat.org, Uneven
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
{110} Perfect
Mohs Hardness
7.5-8
Not Available
Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)
Hercynite and Nosean Chemical Formula
While comparing Hercynite and Nosean 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 Nosean chemical formula.
- Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Nosean- Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)
Hercynite and Nosean Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hercynite and Nosean Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Nosean Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 2.30-2.40 whereas that of Nosean is 2.30-2.40.