Omphacite and Vivianite Physical Properties

Omphacite

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

3.16-3.432.64-2.70

1 7.18

1.5 Fracture

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

(e.g. graphite).

1.6 Cleavage

{110} Good, {110} Good

{010} Perfect

1.7 Mohs Hardness

5-6Not Available

2 10

1.8 Chemical Composition

(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

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

Omphacite and Vivianite Chemical Formula

While comparing Omphacite 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 Omphacite and Vivianite chemical formula.

Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Compare Green Gemstones

Omphacite Vs Powellite

Omphacite Vs Pleonaste

Omphacite Vs Prase Opal

Omphacite and Vivianite Specific Gravity

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