Astrophyllite and Muscovite Physical Properties
Tenacity
Not Available
Elastic
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.2-3.4
2.78-2.88
Fracture
Uneven, Brittle, Metallic
Micaceous, Brittle
Cleavage
Perfect on [001] imperfect on [100]
Perfect on the {001}
Chemical Composition
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
KAl 2AlSi 3O 10(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Astrophyllite and Muscovite Chemical Formula
While comparing Astrophyllite and Muscovite 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 Muscovite chemical formula.
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Muscovite- KAl 2AlSi 3O 10(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Astrophyllite and Muscovite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Astrophyllite and Muscovite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Muscovite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 2.78-2.88 whereas that of Muscovite is 2.78-2.88.