Lazulite and Hollandite Physical Properties

Lazulite

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

3.04-3.175.05

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones of the world (2001) More from other references

Brittle, Metallic

1.6 Cleavage

{001} Indistinct, {???} Indistinct

Distinct / Good, Prismatic

1.7 Mohs Hardness

5.54-6

2 10

1.8 Chemical Composition

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

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

Lazulite and Hollandite Chemical Formula

While comparing Lazulite 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 Lazulite and Hollandite chemical formula.

Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16

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Lazulite and Hollandite Specific Gravity

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