Astrophyllite and Elbaite Physical Properties

Astrophyllite

Elbaite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.2-3.4

Uneven

Perfect on [001] imperfect on [100]

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

2.90-3.10

Uneven, Conchoidal

Poor/indistinct on {1120} and {1011}

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

Astrophyllite and Elbaite Chemical Formula

While comparing Astrophyllite and Elbaite 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 Elbaite chemical formula.

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Astrophyllite and Elbaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Elbaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite Vs Elbaite during the identification of gemstone. Specific gravity of Astrophyllite is whereas that of Elbaite is .