Liddicoatite and Pyromorphite Physical Properties

Liddicoatite

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

3.026.5-7.1

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

1.6 Cleavage

{0001} Poor

Imperfect- [10 1 1]

1.7 Mohs Hardness

Not Available3.5-4

2 10

1.8 Chemical Composition

Ca(Li 2Al)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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

Liddicoatite and Pyromorphite Chemical Formula

While comparing Liddicoatite 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 Liddicoatite and Pyromorphite chemical formula.

Chemical formula of Liddicoatite- Ca(Li 2Al)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

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Liddicoatite and Pyromorphite Specific Gravity

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