Pyroxmangite and Howlite Physical Properties

Pyroxmangite

Howlite

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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

3.76-3.772.45-2.58

1 7.18

1.5 Fracture

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

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

{110} Perfect, {110} Perfect

None

1.7 Mohs Hardness

5-63-3.5

2 10

1.8 Chemical Composition

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

Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Pyroxmangite and Howlite Chemical Formula

While comparing Pyroxmangite and Howlite 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 Howlite chemical formula.

Chemical formula of Pyroxmangite- (Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Pyroxmangite and Howlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyroxmangite and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyroxmangite and Howlite Optical Properties during the identification of gemstone. Specific gravity of Pyroxmangite is 2.45-2.58 whereas that of Howlite is 2.45-2.58.