Natrolite and Pollucite Physical Properties
Solubility
Not Available
Readily soluble in HF
Durability
Not Available
Not Available
Specific Gravity
2.20-2.26
2.86-2.94
Fracture
Uneven, Brittle, Metallic, Gemstones (2009)
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Cleavage
Perfect on {110}
None observed
Mohs Hardness
5-5.5
6.5-7
Chemical Composition
Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Natrolite and Pollucite Chemical Formula
While comparing Natrolite and Pollucite 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 Natrolite and Pollucite chemical formula.
- Chemical formula of Natrolite- Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Natrolite and Pollucite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Natrolite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Natrolite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Natrolite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.