Alunite and Amblygonite Physical Properties

Alunite

Amblygonite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.92.98-3.10

1 7.18

1.5 Fracture

Conchoidal, Uneven

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

1.6 Cleavage

On {0001}, perfect

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

1.7 Mohs Hardness

3.5-46

2 10

1.8 Chemical Composition

KAl3(SO4)2(OH)6

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

Alunite and Amblygonite Chemical Formula

While comparing Alunite and Amblygonite 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 Alunite and Amblygonite chemical formula.

Chemical formula of Alunite- KAl3(SO4)2(OH)6
Chemical formula of Amblygonite- (Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Alunite and Amblygonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alunite and Amblygonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Amblygonite Optical Properties during the identification of gemstone. Specific gravity of Alunite is 2.98-3.10 whereas that of Amblygonite is 2.98-3.10.