Prehnite and Mellite Physical Properties

Prehnite

Mellite

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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

2.80-2.951.58-1.60

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Distinct on [001]

{011} Imperfect

1.7 Mohs Hardness

6-6.52

2 10

1.8 Chemical Composition

Ca₂Al₂Si₃O₁₂(OH)

Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.

Prehnite and Mellite Chemical Formula

While comparing Prehnite and Mellite 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 Mellite chemical formula.

Chemical formula of Prehnite- Ca₂Al₂Si₃O₁₂(OH)
Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.

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Prehnite and Mellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Prehnite and Mellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Mellite Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 1.58-1.60 whereas that of Mellite is 1.58-1.60.