Cordierite Iolite and Periclase Physical Properties

Cordierite Iolite

Periclase

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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

2.56-2.663.7-3.9

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

Conchoidal, Brittle

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

7-7.55.5-6

2 10

1.8 Chemical Composition

Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Cordierite Iolite and Periclase Chemical Formula

While comparing Cordierite Iolite and Periclase 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 Cordierite Iolite and Periclase chemical formula.

Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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Cordierite Iolite and Periclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite Iolite and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite Iolite and Periclase Optical Properties during the identification of gemstone. Specific gravity of Cordierite Iolite is 3.7-3.9 whereas that of Periclase is 3.7-3.9.