Rubellite and Hollandite Physical Properties

Rubellite

Hollandite

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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

3.01-3.065.05

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Brittle, Metallic

1.6 Cleavage

Not Available

Distinct / Good, Prismatic

1.7 Mohs Hardness

7-7.54-6

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

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

Rubellite and Hollandite Chemical Formula

While comparing Rubellite and Hollandite 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 Rubellite and Hollandite chemical formula.

Chemical formula of Rubellite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16

Compare Blue Gemstones

Rubellite Vs Scorzalite

Rubellite Vs Serendibite

Rubellite Vs Shattuckite

Rubellite and Hollandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Hollandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Hollandite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 5.05 whereas that of Hollandite is 5.05.