Melanite and Aragonite Physical Properties

Melanite

Aragonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Dilute acid

1.3 Durability

Not Available

1.4 Specific Gravity

3.70-4.102.93-2.96

1 7.18

1.5 Fracture

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

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Not Available

Distinct on {010}, imperfect {110} and {011}

1.7 Mohs Hardness

6.5-73.5-4

2 10

1.8 Chemical Composition

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

CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Melanite and Aragonite Chemical Formula

While comparing Melanite and Aragonite 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 Aragonite chemical formula.

Chemical formula of Melanite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Black Gemstones

Melanite Vs Pyrargyrite

Melanite Vs Proustite

Melanite Vs Quartz

Melanite and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Melanite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Melanite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Melanite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.