Hollandite and Cordierite Physical Properties

Hollandite

Cordierite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.052.57-2.66

1 7.18

1.5 Fracture

Brittle, Metallic

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

Distinct / Good, Prismatic

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

1.7 Mohs Hardness

4-67-7.5

2 10

1.8 Chemical Composition

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

Mg2Al4Si5O18

Hollandite and Cordierite Chemical Formula

While comparing Hollandite and Cordierite 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 Cordierite chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Cordierite- Mg2Al4Si5O18

Compare Grey Gemstones

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Hollandite Vs Musgravite

Hollandite Vs Larvikite

Hollandite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.