Aragonite and Petalite Physical Properties

Aragonite

Petalite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Dilute acid

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.93-2.962.40

1 7.18

1.5 Fracture

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

Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

1.6 Cleavage

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

Perfect on {001}, poor on {201} with 38.5° angle between the two

1.7 Mohs Hardness

3.5-46-6.5

2 10

1.8 Chemical Composition

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

LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Aragonite and Petalite Chemical Formula

While comparing Aragonite and Petalite 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 Aragonite and Petalite chemical formula.

Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Gems for Virgo

Aragonite Vs Peridot

Aragonite Vs Zircon

Aragonite Vs Variscite

Aragonite and Petalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Aragonite and Petalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Aragonite and Petalite Optical Properties during the identification of gemstone. Specific gravity of Aragonite is 2.40 whereas that of Petalite is 2.40.