Hercynite and Lazulite Physical Properties

Hercynite

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

4.393.04-3.17

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

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

1.6 Cleavage

{111} Indistinct, {111} Indistinct, {111} Indistinct

{001} Indistinct, {???} Indistinct

1.7 Mohs Hardness

7.5-85.5

2 10

1.8 Chemical Composition

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

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

Hercynite and Lazulite Chemical Formula

While comparing Hercynite 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 Hercynite and Lazulite chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

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Hercynite and Lazulite Specific Gravity

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