Powellite and Hollandite Physical Properties

Powellite

Hollandite

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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

4.235.05

1 7.18

1.5 Fracture

UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

Brittle, Metallic

1.6 Cleavage

{111} Distinct

Distinct / Good, Prismatic

1.7 Mohs Hardness

3.5-44-6

2 10

1.8 Chemical Composition

CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Powellite and Hollandite Chemical Formula

While comparing Powellite and Hollandite 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 Powellite and Hollandite chemical formula.

Chemical formula of Powellite- CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16

Compare Blue Gemstones

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Powellite Vs Rubellite

Powellite Vs Sanidine

Powellite and Hollandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Powellite and Hollandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Powellite and Hollandite Optical Properties during the identification of gemstone. Specific gravity of Powellite is 5.05 whereas that of Hollandite is 5.05.