Mimetite and Common Opal Physical Properties

Mimetite

Common 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

7.101.98-2.50

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

[10 1 1] Imperfect

Not Available

1.7 Mohs Hardness

3.55.5-6.5

2 10

1.8 Chemical Composition

Pb 5(AsO 4) 3ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Mimetite and Common Opal Chemical Formula

While comparing Mimetite and Common 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 Mimetite and Common Opal chemical formula.

Chemical formula of Mimetite- Pb 5(AsO 4) 3ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Compare Red Gemstones

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Mimetite Vs Phosphosiderite

Mimetite Vs Pezzottaite

Mimetite and Common Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mimetite and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mimetite and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Mimetite is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.