Cerussite and Gahnite Physical Properties

Cerussite

Gahnite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.46-6.574.00-4.62

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

Conchoidal, Uneven

1.6 Cleavage

Good [110] and [021]

Indistinct parting on [111]

1.7 Mohs Hardness

3-3.57.5-8

2 10

1.8 Chemical Composition

PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Cerussite and Gahnite Chemical Formula

While comparing Cerussite and Gahnite 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 Cerussite and Gahnite chemical formula.

Chemical formula of Cerussite- PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Cerussite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cerussite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cerussite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Cerussite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.