Mottramite and Gibbsite Physical Properties

Mottramite

Gibbsite

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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

5.92.35

1 7.18

1.5 Fracture

Sub-Conchoidal, Brittle, Metallic

Fibrous, Difficult, Fibrous

1.6 Cleavage

None observed

{001} Perfect

1.7 Mohs Hardness

32.5-3

2 10

1.8 Chemical Composition

Not Available

Al(OH)3

Mottramite and Gibbsite Chemical Formula

While comparing Mottramite and Gibbsite 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 Gibbsite chemical formula.

Chemical formula of Gibbsite- Al(OH)3

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Mottramite and Gibbsite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Gibbsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Gibbsite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 2.35 whereas that of Gibbsite is 2.35.