Hollandite and Hurlbutite Physical Properties

Hollandite

Hurlbutite

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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

5.052.90

1 7.18

1.5 Fracture

Brittle, Metallic

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

Distinct / Good, Prismatic

None

1.7 Mohs Hardness

4-66

2 10

1.8 Chemical Composition

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

CaBe 2(PO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Hollandite and Hurlbutite Chemical Formula

While comparing Hollandite and Hurlbutite 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 Hurlbutite chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Hurlbutite- CaBe 2(PO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Hollandite and Hurlbutite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Hurlbutite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Hurlbutite Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 2.90 whereas that of Hurlbutite is 2.90.