Mottramite and Kornerupine Physical Properties

Mottramite

Kornerupine

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.93.25-3.45

1 7.18

1.5 Fracture

Sub-Conchoidal, Brittle, Metallic

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

1.6 Cleavage

None observed

Good on {110}

1.7 Mohs Hardness

36.5

2 10

1.8 Chemical Composition

Not Available

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

Mottramite and Kornerupine Chemical Formula

While comparing Mottramite and Kornerupine 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 Mottramite and Kornerupine 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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Mottramite and Kornerupine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Kornerupine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Kornerupine Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 3.25-3.45 whereas that of Kornerupine is 3.25-3.45.