Vivianite and Peridot Physical Properties

Vivianite

Peridot

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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

2.64-2.70

1.54-1.55

1.5 Fracture

(e.g. graphite).

Conchoidal

1.6 Cleavage

{010} Perfect

Poor

1.7 Mohs Hardness

Not Available

6.5-7

1.8 Chemical Composition

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

(Mg,Fe)₂SiO₄

Vivianite and Peridot Chemical Formula

While comparing Vivianite and Peridot 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 Peridot chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Peridot- (Mg,Fe)₂SiO₄

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Vivianite and Peridot Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Peridot Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Peridot Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 1.54-1.55 whereas that of Peridot is 1.54-1.55.