Howlite and Magnesite Physical Properties

Howlite

Magnesite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Effervesces in hot HCl

1.3 Durability

Not Available

1.4 Specific Gravity

2.45-2.582.92-3.12

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

None

[10 1 1] perfect

1.7 Mohs Hardness

3-3.53.5-4.5

2 10

1.8 Chemical Composition

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

MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Howlite and Magnesite Chemical Formula

While comparing Howlite and Magnesite 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 Magnesite chemical formula.

Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Magnesite- MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Howlite and Magnesite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Howlite and Magnesite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Magnesite Optical Properties during the identification of gemstone. Specific gravity of Howlite is 2.92-3.12 whereas that of Magnesite is 2.92-3.12.