Actinolite and Achroite Physical Properties

Actinolite

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

3.002.90-3.40

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Splintery

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

1.6 Cleavage

perfect along {110}.

Not Available

1.7 Mohs Hardness

5-67-7.5

2 10

1.8 Chemical Composition

Ca 2(Mg,Fe) 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.

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.

Actinolite and Achroite Chemical Formula

While comparing Actinolite 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 Actinolite and Achroite chemical formula.

Chemical formula of Actinolite- Ca 2(Mg,Fe) 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
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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Actinolite and Achroite Specific Gravity

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