Melanite and Pleonaste Physical Properties

Melanite

Pleonaste

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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

3.70-4.103.80

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Not Available

1.7 Mohs Hardness

6.5-78

2 10

1.8 Chemical Composition

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

(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

Melanite and Pleonaste Chemical Formula

While comparing Melanite and Pleonaste 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 Pleonaste chemical formula.

Chemical formula of Melanite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

Compare Black Gemstones

Melanite Vs Quartz

Melanite Vs Proustite

Melanite Vs Pyrargyrite

Melanite and Pleonaste Specific Gravity

Another important criteria for qualitative analysis of gemstones is Melanite and Pleonaste Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Melanite and Pleonaste Optical Properties during the identification of gemstone. Specific gravity of Melanite is 3.80 whereas that of Pleonaste is 3.80.