Iddingsite and Aragonite Physical Properties

Iddingsite

Aragonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Dilute acid

1.3 Durability

Not Available

1.4 Specific Gravity

2.5-2.8

2.93-2.96

1.5 Fracture

Not Available

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

1.6 Cleavage

{???} Perfect

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

1.7 Mohs Hardness

3.5-4

1.8 Chemical Composition

MgO.Fe2O3.3SiO2•4(H2O)

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

Iddingsite and Aragonite Chemical Formula

While comparing Iddingsite 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 Iddingsite and Aragonite chemical formula.

Chemical formula of Iddingsite- MgO.Fe2O3.3SiO2•4(H2O)
Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Iddingsite and Aragonite Specific Gravity

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