Hollandite and Hemimorphite Physical Properties

Hollandite

Hemimorphite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

5.053.30-3.50

1 7.18

1.5 Fracture

Brittle, Metallic

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

Distinct / Good, Prismatic

Perfect on {110}, poor on {101}, {001} rare

1.7 Mohs Hardness

4-65

2 10

1.8 Chemical Composition

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

Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Hollandite and Hemimorphite Chemical Formula

While comparing Hollandite and Hemimorphite 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 Hemimorphite chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Grey Gemstones

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Hollandite Vs Musgravite

Hollandite Vs Larvikite

Hollandite and Hemimorphite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Hemimorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Hemimorphite Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 3.30-3.50 whereas that of Hemimorphite is 3.30-3.50.