Marialite and Alunite Physical Properties

Marialite

Alunite

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.502.6-2.9

1 7.18

1.5 Fracture

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

Conchoidal, Uneven

1.6 Cleavage

Distinct on {100} and {110}

On {0001}, perfect

1.7 Mohs Hardness

5.5-63.5-4

2 10

1.8 Chemical Composition

3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)

KAl3(SO4)2(OH)6

Marialite and Alunite Chemical Formula

While comparing Marialite 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 Marialite and Alunite chemical formula.

Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Alunite- KAl3(SO4)2(OH)6

Compare Blue Gemstones

Marialite Vs Moss Agate

Marialite Vs Nosean

Marialite Vs Padparadscha

Marialite and Alunite Specific Gravity

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