Prehnite and Omphacite Physical Properties

Prehnite

Omphacite

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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

2.80-2.953.16-3.43

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Distinct on [001]

{110} Good, {110} Good

1.7 Mohs Hardness

6-6.55-6

2 10

1.8 Chemical Composition

Ca₂Al₂Si₃O₁₂(OH)

(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

Prehnite and Omphacite Chemical Formula

While comparing Prehnite and Omphacite 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 Omphacite chemical formula.

Chemical formula of Prehnite- Ca₂Al₂Si₃O₁₂(OH)
Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

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Prehnite and Omphacite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Prehnite and Omphacite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Omphacite Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 3.16-3.43 whereas that of Omphacite is 3.16-3.43.