Astrophyllite and Simpsonite Physical Properties

Astrophyllite

Simpsonite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.4Not Available

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

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

1.6 Cleavage

Perfect on [001] imperfect on [100]

None

1.7 Mohs Hardness

37-7.5

2 10

1.8 Chemical Composition

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

Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.

Astrophyllite and Simpsonite Chemical Formula

While comparing Astrophyllite and Simpsonite 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 Simpsonite 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 Simpsonite- Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.

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Astrophyllite and Simpsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Simpsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Simpsonite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is Not Available whereas that of Simpsonite is Not Available.