Purpurite and Labradorite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.2-3.4
2.69-2.72
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Cleavage
[100] [001] perfect
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Mohs Hardness
4-4.5
6-6.5
Chemical Composition
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
(Na,Ca)1-2Si3-2O8
Purpurite and Labradorite Chemical Formula
While comparing Purpurite and Labradorite 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 Purpurite and Labradorite chemical formula.
- Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
Purpurite and Labradorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Purpurite and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Purpurite and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Purpurite is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.