Onyx and Mellite Physical Properties

Onyx

Mellite

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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

2.55-2.701.58-1.60

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Indiscernible

{011} Imperfect

1.7 Mohs Hardness

6.5-72

2 10

1.8 Chemical Composition

SiO₂

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

Onyx and Mellite Chemical Formula

While comparing Onyx and Mellite 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 Onyx and Mellite chemical formula.

Chemical formula of Onyx- SiO₂
Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.

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Onyx and Mellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Mellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Mellite Optical Properties during the identification of gemstone. Specific gravity of Onyx is 1.58-1.60 whereas that of Mellite is 1.58-1.60.