Simpsonite and Pyromorphite Physical Properties

Simpsonite

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

Not Available6.5-7.1

1 7.18

1.5 Fracture

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

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

1.6 Cleavage

None

Imperfect- [10 1 1]

1.7 Mohs Hardness

7-7.53.5-4

2 10

1.8 Chemical Composition

Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.

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

Simpsonite and Pyromorphite Chemical Formula

While comparing Simpsonite 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 Simpsonite and Pyromorphite chemical formula.

Chemical formula of Simpsonite- Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.
Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

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Simpsonite and Pyromorphite Specific Gravity

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