Hercynite and Legrandite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.39
3.98-4.04
Fracture
ConchoidalGemdat.org, Uneven
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
Imperfect, poor one {100}
Mohs Hardness
7.5-8
4.5-5
Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Hercynite and Legrandite Chemical Formula
While comparing Hercynite and Legrandite 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 Legrandite chemical formula.
- Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Hercynite and Legrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hercynite and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.