Achroite and Barite Physical Properties

Achroite

Barite

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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

2.90-3.404.48

1 7.18

1.5 Fracture

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

Uneven

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

7-7.53-3.5

2 10

1.8 Chemical Composition

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.

BaSO4

Achroite and Barite Chemical Formula

While comparing Achroite and Barite 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 Achroite and Barite chemical formula.

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.
Chemical formula of Barite- BaSO4

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Achroite and Barite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Achroite and Barite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Barite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 4.48 whereas that of Barite is 4.48.