Mellite and Precious Opal Physical Properties

Mellite

Precious Opal

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.58-1.601.98-2.25

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

{011} Imperfect

Not Available

1.7 Mohs Hardness

25-6.5

2 10

1.8 Chemical Composition

Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.

SiO 2 · nH 2OGemdat.org , Management Team (2012)

Mellite and Precious Opal Chemical Formula

While comparing Mellite and Precious 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 Mellite and Precious Opal chemical formula.

Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)

Compare Brown Gemstones

Mellite Vs Mother of Pearl

Mellite Vs Morion

Mellite Vs Narsarsukite

Mellite and Precious Opal Specific Gravity

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