Foitite and Lazulite Physical Properties

Foitite

Lazulite

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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

3.173.04-3.17

1 7.18

1.5 Fracture

Handbook of mineralogy (2001)

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

1.6 Cleavage

None

{001} Indistinct, {???} Indistinct

1.7 Mohs Hardness

75.5

2 10

1.8 Chemical Composition

Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)

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

Foitite and Lazulite Chemical Formula

While comparing Foitite and Lazulite 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 Foitite and Lazulite chemical formula.

Chemical formula of Foitite- Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

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Foitite and Lazulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Foitite and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Foitite and Lazulite Optical Properties during the identification of gemstone. Specific gravity of Foitite is 3.04-3.17 whereas that of Lazulite is 3.04-3.17.