Howlite and Pyroxmangite Physical Properties

Howlite

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

2.45-2.583.76-3.77

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

None

{110} Perfect, {110} Perfect

1.7 Mohs Hardness

3-3.55-6

2 10

1.8 Chemical Composition

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

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

Howlite and Pyroxmangite Chemical Formula

While comparing Howlite 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 Howlite and Pyroxmangite chemical formula.

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

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Howlite and Pyroxmangite Specific Gravity

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