Pyromorphite and Boulder Opal Physical Properties

Pyromorphite

Boulder Opal

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.5-7.11.98-2.25

1 7.18

1.5 Fracture

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Imperfect- [10 1 1]

Not Available

1.7 Mohs Hardness

3.5-45-6.5

2 10

1.8 Chemical Composition

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

SiO 2 + H 2OUlrich Henn and Claudio C.

Pyromorphite and Boulder Opal Chemical Formula

While comparing Pyromorphite and Boulder Opal 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 Boulder Opal chemical formula.

Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Green Gemstones

Pyromorphite Vs Sapphirine

Pyromorphite Vs Sapphire

Pyromorphite Vs Rutilated Quartz

Pyromorphite and Boulder Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Boulder Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Boulder Opal Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 1.98-2.25 whereas that of Boulder Opal is 1.98-2.25.