Periclase and Melanite Physical Properties

Periclase

Melanite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.7-3.93.70-4.10

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

{001} perfect; {111} imperfect, may exhibit parting on , {011}

Not Available

1.7 Mohs Hardness

5.5-66.5-7

2 10

1.8 Chemical Composition

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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

Periclase and Melanite Chemical Formula

While comparing Periclase and Melanite 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 Periclase and Melanite chemical formula.

Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Melanite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Periclase and Melanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Periclase and Melanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Periclase and Melanite Optical Properties during the identification of gemstone. Specific gravity of Periclase is 3.70-4.10 whereas that of Melanite is 3.70-4.10.