Hollandite and Diaspore Physical Properties

Hollandite

Diaspore

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1 Physical Properties

1.1 Tenacity

Not Available

Very brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

5.053.30-3.40

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

Distinct / Good, Prismatic

{010} perfect, {110} distinct, {100} in traces

1.7 Mohs Hardness

4-66.5-7

2 10

1.8 Chemical Composition

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

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Hollandite and Diaspore Chemical Formula

While comparing Hollandite and Diaspore 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 Diaspore chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Compare Grey Gemstones

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Hollandite Vs Musgravite

Hollandite Vs Larvikite

Hollandite and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.