Astrophyllite and Narsarsukite Physical Properties

Astrophyllite

Narsarsukite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.42.72-2.83

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

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

1.6 Cleavage

Perfect on [001] imperfect on [100]

Good on {100} and {110}

1.7 Mohs Hardness

36-7

2 10

1.8 Chemical Composition

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

Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.

Astrophyllite and Narsarsukite Chemical Formula

While comparing Astrophyllite and Narsarsukite 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 Narsarsukite 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 Narsarsukite- Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.

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Astrophyllite and Narsarsukite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Narsarsukite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Narsarsukite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 2.72-2.83 whereas that of Narsarsukite is 2.72-2.83.