Marialite and Opal Physical Properties

Marialite

Opal

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1 Physical Properties

1.1 Tenacity

Brittle

BrittleWalter Schumann

1.2 Solubility

Not Available

hot salt water

1.3 Durability

Not Available

1.4 Specific Gravity

2.50

1.98-2.25

1.5 Fracture

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

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle

1.6 Cleavage

Distinct on {100} and {110}

None

1.7 Mohs Hardness

5.5-6

5-6.5

1.8 Chemical Composition

3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)

SiO₂ · nH₂O

Marialite and Opal Chemical Formula

While comparing Marialite and 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 Marialite and Opal chemical formula.

Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Opal- SiO₂ · nH₂O

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Marialite and Opal Specific Gravity

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