Pollucite and Labradorite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Readily soluble in HF
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.86-2.94
2.69-2.72
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Cleavage
None observed
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Mohs Hardness
6.5-7
6-6.5
Chemical Composition
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
(Na,Ca)1-2Si3-2O8
Pollucite and Labradorite Chemical Formula
While comparing Pollucite 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 Pollucite and Labradorite chemical formula.
- Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
Pollucite and Labradorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pollucite and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.