Umbalite and Aragonite Physical Properties

Umbalite

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

3.62-4.33

2.93-2.96

1.5 Fracture

Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)

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

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

7-7.5

3.5-4

1.8 Chemical Composition

Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

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

Umbalite and Aragonite Chemical Formula

While comparing Umbalite 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 Umbalite and Aragonite chemical formula.

Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Umbalite and Aragonite Specific Gravity

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