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