Vivianite and Natrolite Physical Properties

Vivianite

Natrolite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.64-2.702.20-2.26

1 7.18

1.5 Fracture

(e.g. graphite).

Uneven, Brittle, Metallic, Gemstones (2009)

1.6 Cleavage

{010} Perfect

Perfect on {110}

1.7 Mohs Hardness

Not Available5-5.5

2 10

1.8 Chemical Composition

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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

Vivianite and Natrolite Chemical Formula

While comparing Vivianite 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 Vivianite and Natrolite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
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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Vivianite and Natrolite Specific Gravity

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