Boulder Opal and Pyroxmangite Physical Properties

Boulder Opal

Pyroxmangite

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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

1.98-2.253.76-3.77

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Not Available

{110} Perfect, {110} Perfect

1.7 Mohs Hardness

5-6.55-6

2 10

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

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

Boulder Opal and Pyroxmangite Chemical Formula

While comparing Boulder Opal and Pyroxmangite 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 Boulder Opal and Pyroxmangite chemical formula.

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

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Boulder Opal and Pyroxmangite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Boulder Opal and Pyroxmangite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Boulder Opal and Pyroxmangite Optical Properties during the identification of gemstone. Specific gravity of Boulder Opal is 3.76-3.77 whereas that of Pyroxmangite is 3.76-3.77.