Labradorite and Apatite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.69-2.72
3.16-3.23
Fracture
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven
Cleavage
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
[0001] indistinct, [1010] indistinct
Chemical Composition
(Na,Ca)1-2Si3-2O8
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Labradorite and Apatite Chemical Formula
While comparing Labradorite and Apatite 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 Apatite chemical formula.
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
- Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Labradorite and Apatite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Labradorite and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Apatite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 3.16-3.23 whereas that of Apatite is 3.16-3.23.