Onyx and Strontianite Physical Properties

Onyx

Strontianite

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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

2.55-2.703.63-3.79

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Indiscernible

{110} Good

1.7 Mohs Hardness

6.5-73.5

2 10

1.8 Chemical Composition

SiO₂

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

Onyx and Strontianite Chemical Formula

While comparing Onyx and Strontianite 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 Strontianite chemical formula.

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

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Onyx and Strontianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Strontianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Strontianite Optical Properties during the identification of gemstone. Specific gravity of Onyx is 3.63-3.79 whereas that of Strontianite is 3.63-3.79.