Hollandite and Gibbsite Physical Properties

Hollandite

Gibbsite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.052.35

1 7.18

1.5 Fracture

Brittle, Metallic

Fibrous, Difficult, Fibrous

1.6 Cleavage

Distinct / Good, Prismatic

{001} Perfect

1.7 Mohs Hardness

4-62.5-3

2 10

1.8 Chemical Composition

Ba(Mn++++,Mn++)8O16

Al(OH)3

Hollandite and Gibbsite Chemical Formula

While comparing Hollandite 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 Hollandite and Gibbsite chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Gibbsite- Al(OH)3

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Hollandite and Gibbsite Specific Gravity

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