Datolite and Vivianite Physical Properties

Datolite

Vivianite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.002.64-2.70

1 7.18

1.5 Fracture

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

(e.g. graphite).

1.6 Cleavage

None

{010} Perfect

1.7 Mohs Hardness

5-5.5Not Available

2 10

1.8 Chemical Composition

CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Datolite and Vivianite Chemical Formula

While comparing Datolite 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 Datolite and Vivianite chemical formula.

Chemical formula of Datolite- CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Compare Green Gemstones

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Datolite and Vivianite Specific Gravity

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