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Hollandite and Crocoite Physical Properties


Crocoite and Hollandite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
5.05   
5.90-6.10   

Fracture
Brittle, Metallic   
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).   

Cleavage
Distinct / Good, Prismatic   
{110} Distinct, {001} Indistinct, {100} Indistinct   

Mohs Hardness
4-6   
2.5-3   

Chemical Composition
Ba(Mn++++,Mn++)8O16   
PbCrO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Hollandite and Crocoite Chemical Formula

While comparing Hollandite and Crocoite 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 Crocoite chemical formula.

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Hollandite and Crocoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Crocoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Crocoite Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 5.90-6.10 whereas that of Crocoite is 5.90-6.10.

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