Prehnite and Natrolite Physical Properties

Prehnite

Natrolite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.80-2.952.20-2.26

1 7.18

1.5 Fracture

Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic

Uneven, Brittle, Metallic, Gemstones (2009)

1.6 Cleavage

Distinct on [001]

Perfect on {110}

1.7 Mohs Hardness

6-6.55-5.5

2 10

1.8 Chemical Composition

Ca₂Al₂Si₃O₁₂(OH)

Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Prehnite and Natrolite Chemical Formula

While comparing Prehnite and Natrolite 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 Prehnite and Natrolite chemical formula.

Chemical formula of Prehnite- Ca₂Al₂Si₃O₁₂(OH)
Chemical formula of Natrolite- Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Prehnite and Natrolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Prehnite and Natrolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Natrolite Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 2.20-2.26 whereas that of Natrolite is 2.20-2.26.