Hollandite and Anhydrite Physical Properties

Hollandite

Anhydrite

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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

5.052.90-2.98

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

Distinct / Good, Prismatic

Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.

1.7 Mohs Hardness

4-63.5

2 10

1.8 Chemical Composition

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

CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Hollandite and Anhydrite Chemical Formula

While comparing Hollandite and Anhydrite 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 Anhydrite chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Hollandite and Anhydrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.