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Astrophyllite and Elbaite Physical Properties


Elbaite and Astrophyllite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.2-3.4   
2.90-3.10   

Fracture
Uneven, Brittle, Metallic   
Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle   

Cleavage
Perfect on [001] imperfect on [100]   
Poor/indistinct on {1120} and {1011}   

Mohs Hardness
3   
7   

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

Optical Properties >>
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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 and Elbaite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 2.90-3.10 whereas that of Elbaite is 2.90-3.10.

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