Achroite and Anthophyllite Physical Properties

Achroite

Anthophyllite

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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

2.90-3.402.9-3.5

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

1.6 Cleavage

Not Available

{110} Perfect, {???} Distinct, {???} Distinct

1.7 Mohs Hardness

7-7.55.5-6

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.

(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Achroite and Anthophyllite Chemical Formula

While comparing Achroite and Anthophyllite 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 Anthophyllite 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 Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Achroite and Anthophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Achroite and Anthophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Anthophyllite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 2.9-3.5 whereas that of Anthophyllite is 2.9-3.5.