Liddicoatite and Prehnite Physical Properties

Liddicoatite

Prehnite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.022.80-2.95

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal

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

1.6 Cleavage

{0001} Poor

Distinct on [001]

1.7 Mohs Hardness

Not Available6-6.5

2 10

1.8 Chemical Composition

Ca(Li 2Al)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Ca₂Al₂Si₃O₁₂(OH)

Liddicoatite and Prehnite Chemical Formula

While comparing Liddicoatite and Prehnite 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 Liddicoatite and Prehnite chemical formula.

Chemical formula of Liddicoatite- Ca(Li 2Al)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Prehnite- Ca₂Al₂Si₃O₁₂(OH)

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Liddicoatite and Prehnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Liddicoatite and Prehnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Liddicoatite and Prehnite Optical Properties during the identification of gemstone. Specific gravity of Liddicoatite is 2.80-2.95 whereas that of Prehnite is 2.80-2.95.