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Grandidierite
Grandidierite

Astrophyllite
Astrophyllite



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Grandidierite
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Astrophyllite

Grandidierite and Astrophyllite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.85-3.00
Uneven
Perfect
7.5
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich 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)

Grandidierite and Astrophyllite Chemical Formula

While comparing Grandidierite 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 Grandidierite and Astrophyllite chemical formula.

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Grandidierite and Astrophyllite Specific Gravity

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