Ludlamite and Pyromorphite Physical Properties

Ludlamite

Pyromorphite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.1-3.26.5-7.1

1 7.18

1.5 Fracture

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

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

1.6 Cleavage

Vitreous, pearly on cleavage

Imperfect- [10 1 1]

1.7 Mohs Hardness

3-43.5-4

2 10

1.8 Chemical Composition

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

Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

Ludlamite and Pyromorphite Chemical Formula

While comparing Ludlamite and Pyromorphite 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 Pyromorphite 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 Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

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Ludlamite and Pyromorphite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ludlamite and Pyromorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ludlamite and Pyromorphite Optical Properties during the identification of gemstone. Specific gravity of Ludlamite is 6.5-7.1 whereas that of Pyromorphite is 6.5-7.1.