Prehnite and Uvite Physical Properties

Prehnite

Uvite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.80-2.95

2.97-3.14

1.5 Fracture

Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic

Uneven, Conchoidal, Brittle

1.6 Cleavage

Distinct on [001]

{1011} Indistinct

1.7 Mohs Hardness

6-6.5

Not Available

1.8 Chemical Composition

Ca₂Al₂Si₃O₁₂(OH)

Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Prehnite and Uvite Chemical Formula

While comparing Prehnite and Uvite 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 Prehnite and Uvite chemical formula.

Chemical formula of Prehnite- Ca₂Al₂Si₃O₁₂(OH)
Chemical formula of Uvite- Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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Prehnite and Uvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Prehnite and Uvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Uvite Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 2.97-3.14 whereas that of Uvite is 2.97-3.14.