Barite and Achroite Physical Properties

Barite

Achroite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.482.90-3.40

1 7.18

1.5 Fracture

Uneven

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

{010} Perfect, {210} Perfect, {010} Imperfect

Not Available

1.7 Mohs Hardness

3-3.57-7.5

2 10

1.8 Chemical Composition

BaSO4

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Barite and Achroite Chemical Formula

While comparing Barite and Achroite 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 Barite and Achroite chemical formula.

Chemical formula of Barite- BaSO4
Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

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Barite and Achroite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Barite and Achroite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Barite and Achroite Optical Properties during the identification of gemstone. Specific gravity of Barite is 2.90-3.40 whereas that of Achroite is 2.90-3.40.