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Sellaite
Sellaite

Astrophyllite
Astrophyllite



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Sellaite
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Astrophyllite

Sellaite and Astrophyllite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.14-3.16
Conchoidal
Perfect on {010} and {110}
5-5.5
MgF 2Ulrich Henn and Claudio C.
 
-
-
-
3.2-3.4
Uneven
Perfect on [001] imperfect on [100]
3
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Sellaite and Astrophyllite Chemical Formula

While comparing Sellaite 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 Sellaite and Astrophyllite chemical formula.

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Sellaite and Astrophyllite Specific Gravity

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