Natrolite and Pollucite Physical Properties

Natrolite

Pollucite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Readily soluble in HF

1.3 Durability

Not Available

1.4 Specific Gravity

2.20-2.262.86-2.94

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic, Gemstones (2009)

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Perfect on {110}

None observed

1.7 Mohs Hardness

5-5.56.5-7

2 10

1.8 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

Compare White Gemstones

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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.