Galena and Lazulite Physical Properties

Galena

Lazulite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.233.04-3.17

1 7.18

1.5 Fracture

Subconchoidal, Brittle, Metallic

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

1.6 Cleavage

Cubic perfect on [001], parting on [111]

{001} Indistinct, {???} Indistinct

1.7 Mohs Hardness

2.5-2.755.5

2 10

1.8 Chemical Composition

PbS

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

Galena and Lazulite Chemical Formula

While comparing Galena 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 Galena and Lazulite chemical formula.

Chemical formula of Galena- PbS
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

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Galena Vs Clinochlore

Galena and Lazulite Specific Gravity

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