Kornerupine and Astrophyllite Physical Properties

Kornerupine

Astrophyllite

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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

3.25-3.453.2-3.4

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven

Uneven, Brittle, Metallic

1.6 Cleavage

Good on {110}

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

6.53

2 10

1.8 Chemical Composition

Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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

Kornerupine and Astrophyllite Chemical Formula

While comparing Kornerupine and Astrophyllite 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 Kornerupine and Astrophyllite chemical formula.

Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

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Kornerupine and Astrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kornerupine and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kornerupine and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Kornerupine is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.