Kornerupine and Mottramite Physical Properties

Kornerupine

Mottramite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.25-3.455.9

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven

Sub-Conchoidal, Brittle, Metallic

1.6 Cleavage

Good on {110}

None observed

1.7 Mohs Hardness

6.53

2 10

1.8 Chemical Composition

Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Not Available

Kornerupine and Mottramite Chemical Formula

While comparing Kornerupine and Mottramite 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 Kornerupine and Mottramite chemical formula.

Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Kornerupine and Mottramite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kornerupine and Mottramite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kornerupine and Mottramite Optical Properties during the identification of gemstone. Specific gravity of Kornerupine is 5.9 whereas that of Mottramite is 5.9.