Achroite and Jeremejevite Physical Properties

Achroite

Jeremejevite

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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

2.90-3.403.28-3.31

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Not Available

None observed

1.7 Mohs Hardness

7-7.56.5-7.5

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.

Al 6B 5O 15(F,OH) 3Ulrich Henn and Claudio C.

Achroite and Jeremejevite Chemical Formula

While comparing Achroite and Jeremejevite 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 Jeremejevite 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 Jeremejevite- Al 6B 5O 15(F,OH) 3Ulrich Henn and Claudio C.

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Achroite and Jeremejevite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Achroite and Jeremejevite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Jeremejevite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 3.28-3.31 whereas that of Jeremejevite is 3.28-3.31.