Triplite and Alunite Physical Properties

Triplite

Alunite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.85-3.942.6-2.9

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Uneven

Conchoidal, Uneven

1.6 Cleavage

{010} Good, {100} Distinct

On {0001}, perfect

1.7 Mohs Hardness

5-5.53.5-4

2 10

1.8 Chemical Composition

(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)

KAl3(SO4)2(OH)6

Triplite and Alunite Chemical Formula

While comparing Triplite and Alunite 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 Triplite and Alunite chemical formula.

Chemical formula of Triplite- (Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Alunite- KAl3(SO4)2(OH)6

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Triplite and Alunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Triplite and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Triplite and Alunite Optical Properties during the identification of gemstone. Specific gravity of Triplite is 2.6-2.9 whereas that of Alunite is 2.6-2.9.