Elbaite and Vivianite Physical Properties

Elbaite

Vivianite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.102.64-2.70

1 7.18

1.5 Fracture

Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

(e.g. graphite).

1.6 Cleavage

Poor/indistinct on {1120} and {1011}

{010} Perfect

1.7 Mohs Hardness

7Not Available

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

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

Elbaite and Vivianite Chemical Formula

While comparing Elbaite and Vivianite 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 Elbaite and Vivianite chemical formula.

Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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Elbaite and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Elbaite and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Elbaite and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Elbaite is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.