Vivianite and Riebeckite Physical Properties

Vivianite

Riebeckite

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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

2.64-2.703.28-3.44

1 7.18

1.5 Fracture

(e.g. graphite).

Uneven, Splintery, Brittle

1.6 Cleavage

{010} Perfect

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

1.7 Mohs Hardness

Not Available5.0-6.0

2 10

1.8 Chemical Composition

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

Not Available

Vivianite and Riebeckite Chemical Formula

While comparing Vivianite and Riebeckite 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 Riebeckite chemical formula.

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

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Vivianite and Riebeckite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.