Pyroxmangite and Onyx Physical Properties

Pyroxmangite

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

3.76-3.772.55-2.70

1 7.18

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

Not Available

1.6 Cleavage

{110} Perfect, {110} Perfect

Indiscernible

1.7 Mohs Hardness

5-66.5-7

2 10

1.8 Chemical Composition

(Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.

SiO₂

Pyroxmangite and Onyx Chemical Formula

While comparing Pyroxmangite 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 Pyroxmangite and Onyx chemical formula.

Chemical formula of Pyroxmangite- (Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.
Chemical formula of Onyx- SiO₂

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Pyroxmangite and Onyx Specific Gravity

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