Amblygonite and Prehnite Physical Properties

Amblygonite

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

2.98-3.102.80-2.95

1 7.18

1.5 Fracture

Sub-Conchoidal, Irregular/uneven, Sub-Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

[100] Perfect, [110] Good, [011] Distinct

Distinct on [001]

1.7 Mohs Hardness

66-6.5

2 10

1.8 Chemical Composition

(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Ca₂Al₂Si₃O₁₂(OH)

Amblygonite and Prehnite Chemical Formula

While comparing Amblygonite 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 Amblygonite and Prehnite chemical formula.

Chemical formula of Amblygonite- (Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Prehnite- Ca₂Al₂Si₃O₁₂(OH)

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Amblygonite and Prehnite Specific Gravity

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