Hollandite and Crocoite Physical Properties

Hollandite

Crocoite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.055.90-6.10

1 7.18

1.5 Fracture

Brittle, Metallic

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).

1.6 Cleavage

Distinct / Good, Prismatic

{110} Distinct, {001} Indistinct, {100} Indistinct

1.7 Mohs Hardness

4-62.5-3

2 10

1.8 Chemical Composition

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

PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Crocoite- PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Grey Gemstones

Hollandite Vs Musgravite

Hollandite Vs Falcons Eye

Hollandite Vs Larvikite

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.