Anthophyllite and Alunite Physical Properties

Anthophyllite

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

2.9-3.52.6-2.9

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

Conchoidal, Uneven

1.6 Cleavage

{110} Perfect, {???} Distinct, {???} Distinct

On {0001}, perfect

1.7 Mohs Hardness

5.5-63.5-4

2 10

1.8 Chemical Composition

(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

KAl3(SO4)2(OH)6

Anthophyllite and Alunite Chemical Formula

While comparing Anthophyllite 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 Anthophyllite and Alunite chemical formula.

Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Alunite- KAl3(SO4)2(OH)6

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Anthophyllite and Alunite Specific Gravity

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