Magnesite and Aragonite Physical Properties

Magnesite

Aragonite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Effervesces in hot HCl

Dilute acid

1.3 Durability

Not Available

1.4 Specific Gravity

2.92-3.122.93-2.96

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

[10 1 1] perfect

Distinct on {010}, imperfect {110} and {011}

1.7 Mohs Hardness

3.5-4.53.5-4

2 10

1.8 Chemical Composition

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

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

Magnesite and Aragonite Chemical Formula

While comparing Magnesite and Aragonite 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 Magnesite and Aragonite chemical formula.

Chemical formula of Magnesite- MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Magnesite and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Magnesite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Magnesite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Magnesite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.