Ludlamite and Cerussite Physical Properties

Ludlamite

Cerussite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.1-3.26.46-6.57

1 7.18

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Vitreous, pearly on cleavage

Good [110] and [021]

1.7 Mohs Hardness

3-43-3.5

2 10

1.8 Chemical Composition

(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Ludlamite and Cerussite Chemical Formula

While comparing Ludlamite and Cerussite 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 Ludlamite and Cerussite chemical formula.

Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Cerussite- PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Ludlamite and Cerussite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ludlamite and Cerussite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ludlamite and Cerussite Optical Properties during the identification of gemstone. Specific gravity of Ludlamite is 6.46-6.57 whereas that of Cerussite is 6.46-6.57.