Labradorite and Esperite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.69-2.72
4.28-4.42
Fracture
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Metallic
Cleavage
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Distinct on [010] and [100] poor on [101]
Mohs Hardness
6-6.5
5-5.5
Chemical Composition
(Na,Ca)1-2Si3-2O8
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Labradorite and Esperite Chemical Formula
While comparing Labradorite and Esperite 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 Esperite chemical formula.
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
- Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Labradorite and Esperite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Labradorite and Esperite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Esperite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 4.28-4.42 whereas that of Esperite is 4.28-4.42.