Galena and Aragonite Physical Properties

Galena

Aragonite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Dilute acid

1.3 Durability

Not Available

1.4 Specific Gravity

6.232.93-2.96

1 7.18

1.5 Fracture

Subconchoidal, Brittle, Metallic

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

1.6 Cleavage

Cubic perfect on [001], parting on [111]

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

1.7 Mohs Hardness

2.5-2.753.5-4

2 10

1.8 Chemical Composition

PbS

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

Galena and Aragonite Chemical Formula

While comparing Galena 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 Galena and Aragonite chemical formula.

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

Compare Grey Gemstones

Galena Vs Clinochlore

Galena Vs Larvikite

Galena Vs Falcons Eye

Galena and Aragonite Specific Gravity

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