Thulite and Hollandite Physical Properties

Thulite

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

3.15.05

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

Brittle, Metallic

1.6 Cleavage

Perfect {010} imperfect {100}

Distinct / Good, Prismatic

1.7 Mohs Hardness

6-74-6

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

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

Thulite and Hollandite Chemical Formula

While comparing Thulite 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 Thulite and Hollandite chemical formula.

Chemical formula of Thulite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16

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Thulite and Hollandite Specific Gravity

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