Astrophyllite and Axinite Physical Properties

Astrophyllite

Axinite

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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

3.2-3.43.26-3.36

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect on [001] imperfect on [100]

Good on {100}

1.7 Mohs Hardness

36.5-7

2 10

1.8 Chemical Composition

(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Astrophyllite and Axinite Chemical Formula

While comparing Astrophyllite and Axinite 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 Astrophyllite and Axinite chemical formula.

Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Axinite- (Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Astrophyllite and Axinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Axinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Axinite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 3.26-3.36 whereas that of Axinite is 3.26-3.36.