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Hollandite
Hollandite

Crystal Opal
Crystal Opal



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Hollandite
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Crystal Opal

Hollandite and Crystal Opal Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
5.05
1.97-2.22
1.5 Fracture
Brittle, Metallic
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
Distinct / Good, Prismatic
Not Available
1.7 Mohs Hardness
4-6
5.5-6.5
1.8 Chemical Composition
Ba(Mn++++,Mn++)8O16
SiO 2 + H 2OUlrich Henn and Claudio C.

Hollandite and Crystal Opal Chemical Formula

While comparing Hollandite and Crystal Opal 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 Crystal Opal chemical formula.

  • Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
  • Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Hollandite and Crystal Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Crystal Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Crystal Opal Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 1.97-2.22 whereas that of Crystal Opal is 1.97-2.22.