Onyx and Scolecite Physical Properties

Onyx

Scolecite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.702.20-2.23

1 7.18

1.5 Fracture

Not Available

Irregular/uneven, UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Uneven

1.6 Cleavage

Indiscernible

Perfect on {110} and {1 1 0}

1.7 Mohs Hardness

6.5-75-5.5

2 10

1.8 Chemical Composition

SiO₂

CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.

Onyx and Scolecite Chemical Formula

While comparing Onyx and Scolecite 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 Scolecite chemical formula.

Chemical formula of Onyx- SiO₂
Chemical formula of Scolecite- CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.

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Onyx and Scolecite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Scolecite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Scolecite Optical Properties during the identification of gemstone. Specific gravity of Onyx is 2.20-2.23 whereas that of Scolecite is 2.20-2.23.