Augite and Legrandite Physical Properties
Specific Gravity
3.19-3.56
3.98-4.04
Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
{110} Perfect, {010} Indistinct
Imperfect, poor one {100}
Mohs Hardness
5.5-6
4.5-5
Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Augite and Legrandite Chemical Formula
While comparing Augite 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 Augite and Legrandite chemical formula.
- Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Augite and Legrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Augite and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augite and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Augite is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.