Hollandite and Lazurite Physical Properties

Hollandite

Lazurite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

5.052.75

1 7.18

1.5 Fracture

Brittle, Metallic

Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Distinct / Good, Prismatic

Imperfect on {110}

1.7 Mohs Hardness

4-65.5

2 10

1.8 Chemical Composition

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

(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Hollandite and Lazurite Chemical Formula

While comparing Hollandite and Lazurite 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 Lazurite chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

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Hollandite and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 2.75 whereas that of Lazurite is 2.75.