Sphalerite and Pyromorphite Physical Properties

Sphalerite

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

3.95-4.106.5-7.1

1 7.18

1.5 Fracture

UnevenWalter Schumann, Gemstones of the world (2001) More from other references, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Uneven

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

1.6 Cleavage

{110} Perfect, {110} Perfect, {110} Perfect

Imperfect- [10 1 1]

1.7 Mohs Hardness

3.5-43.5-4

2 10

1.8 Chemical Composition

(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Sphalerite and Pyromorphite Chemical Formula

While comparing Sphalerite 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 Sphalerite and Pyromorphite chemical formula.

Chemical formula of Sphalerite- (Zn,Fe)SMichael 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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Sphalerite and Pyromorphite Specific Gravity

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