Melanite and Vivianite Physical Properties

Melanite

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

3.70-4.102.64-2.70

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

(e.g. graphite).

1.6 Cleavage

Not Available

{010} Perfect

1.7 Mohs Hardness

6.5-7Not Available

2 10

1.8 Chemical Composition

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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

Melanite and Vivianite Chemical Formula

While comparing Melanite 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 Melanite and Vivianite chemical formula.

Chemical formula of Melanite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Compare Black Gemstones

Melanite Vs Quartz

Melanite Vs Proustite

Melanite Vs Pyrargyrite

Melanite and Vivianite Specific Gravity

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