Pyroxmangite and Boulder Opal Physical Properties

Pyroxmangite

Boulder Opal

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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

3.76-3.771.98-2.25

1 7.18

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{110} Perfect, {110} Perfect

Not Available

1.7 Mohs Hardness

5-65-6.5

2 10

1.8 Chemical Composition

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

SiO 2 + H 2OUlrich Henn and Claudio C.

Pyroxmangite and Boulder Opal Chemical Formula

While comparing Pyroxmangite and Boulder Opal 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 Boulder Opal chemical formula.

Chemical formula of Pyroxmangite- (Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.
Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

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Pyroxmangite and Boulder Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyroxmangite and Boulder Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyroxmangite and Boulder Opal Optical Properties during the identification of gemstone. Specific gravity of Pyroxmangite is 1.98-2.25 whereas that of Boulder Opal is 1.98-2.25.