Pyromorphite and Moonstone Physical Properties

Pyromorphite

Moonstone

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

6.5-7.12.56-2.60

1 7.18

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Fracture

Uneven, Conchoidal

Uneven, ConchoidalWalter Schumann

Cleavage

Imperfect- [10 1 1]

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

Mohs Hardness

3.5-46-6.5

2 10

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Chemical Composition

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

Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

Pyromorphite and Moonstone Chemical Formula

While comparing Pyromorphite and Moonstone 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 Pyromorphite and Moonstone chemical formula.

Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

Compare Green Gemstones

Pyromorphite Vs Smaragdite

Pyromorphite Vs Smithsonite

Pyromorphite Vs Sphalerite

Pyromorphite and Moonstone Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Moonstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Moonstone Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 2.56-2.60 whereas that of Moonstone is 2.56-2.60.