Strontianite and Onyx Physical Properties

Strontianite

Onyx

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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

3.63-3.792.55-2.70

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

{110} Good

Indiscernible

1.7 Mohs Hardness

3.56.5-7

2 10

1.8 Chemical Composition

SrCO 3Walter Schumann , Gemstones of the world (2001) More from other references

SiO₂

Strontianite and Onyx Chemical Formula

While comparing Strontianite and Onyx 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 Strontianite and Onyx chemical formula.

Chemical formula of Strontianite- SrCO 3Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Onyx- SiO₂

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Strontianite and Onyx Specific Gravity

Another important criteria for qualitative analysis of gemstones is Strontianite and Onyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Strontianite and Onyx Optical Properties during the identification of gemstone. Specific gravity of Strontianite is 2.55-2.70 whereas that of Onyx is 2.55-2.70.