Hollandite and Rutile Physical Properties

Hollandite

Rutile

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Insoluble in acids

1.3 Durability

Not Available

1.4 Specific Gravity

5.054.20-4.30

1 7.18

1.5 Fracture

Brittle, Metallic

Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Distinct / Good, Prismatic

{110} good, 100 moderate, parting on {092} and {011}

1.7 Mohs Hardness

4-66-6.5

2 10

1.8 Chemical Composition

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

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Hollandite and Rutile Chemical Formula

While comparing Hollandite and Rutile 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 Rutile chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Hollandite and Rutile Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Rutile Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Rutile Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 4.20-4.30 whereas that of Rutile is 4.20-4.30.