Labradorite and Legrandite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.69-2.72
3.98-4.04
Fracture
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Imperfect, poor one {100}
Mohs Hardness
6-6.5
4.5-5
Chemical Composition
(Na,Ca)1-2Si3-2O8
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Labradorite and Legrandite Chemical Formula
While comparing Labradorite 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 Labradorite and Legrandite chemical formula.
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
- Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Labradorite and Legrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Labradorite and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.