Alabaster and Sodalite Physical Properties

Alabaster

Sodalite

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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

2.302.15-2.40

1 7.18

1.5 Fracture

Not Available

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

1.6 Cleavage

Not Available

Poor on {110}

1.7 Mohs Hardness

25-6

2 10

1.8 Chemical Composition

CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)

Na₈Al₆Si₆O₂₄Cl₂

Alabaster and Sodalite Chemical Formula

While comparing Alabaster and Sodalite 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 Alabaster and Sodalite chemical formula.

Chemical formula of Alabaster- CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂

Compare Brown Gemstones

Alabaster Vs Astrophyllite

Alabaster Vs Anthophyllite

Alabaster Vs Anhydrite

Alabaster and Sodalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alabaster and Sodalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alabaster and Sodalite Optical Properties during the identification of gemstone. Specific gravity of Alabaster is 2.15-2.40 whereas that of Sodalite is 2.15-2.40.