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Aragonite
Aragonite

Howlite
Howlite



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Aragonite
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Howlite

Aragonite and Howlite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Dilute acid
-
2.93-2.96
Subconchoidal, Conchoidal
Distinct on {010}, imperfect {110} and {011}
3.5-4
CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
-
-
-
2.45-2.58
Conchoidal
None
3-3.5
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Aragonite and Howlite Chemical Formula

While comparing Aragonite and Howlite 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 Howlite chemical formula.

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Aragonite and Howlite Specific Gravity

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