Adamite and Hollandite Physical Properties

Adamite

Hollandite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.32-4.48

5.05

1.5 Fracture

Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic

Brittle, Metallic

1.6 Cleavage

{101}, good; {010}, poor

Distinct / Good, Prismatic

1.7 Mohs Hardness

3.5

4-6

1.8 Chemical Composition

Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)

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

Adamite and Hollandite Chemical Formula

While comparing Adamite 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 Adamite and Hollandite chemical formula.

Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16

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Adamite and Hollandite Specific Gravity

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