Cordierite and Cobaltite Physical Properties

Cordierite

Cobaltite

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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

2.57-2.666.3

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic

1.6 Cleavage

Fair on {100}, poor on {001} and {010}

{100} Good, {010} Good, {001} Good

1.7 Mohs Hardness

7-7.55.5

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

CoAsSAnthony et al , Handbook of mineralogy (2001)

Cordierite and Cobaltite Chemical Formula

While comparing Cordierite and Cobaltite 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 and Cobaltite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)

Compare Blue Gemstones

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Cordierite Vs Plumbogummite

Cordierite Vs Riebeckite

Cordierite and Cobaltite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 6.3 whereas that of Cobaltite is 6.3.