Astrophyllite and Ceylonite Physical Properties

Astrophyllite

Ceylonite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.43.63-3.9

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect on [001] imperfect on [100]

Indistinct

1.7 Mohs Hardness

37.5-8

2 10

1.8 Chemical Composition

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

(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references

Astrophyllite and Ceylonite Chemical Formula

While comparing Astrophyllite and Ceylonite 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 Ceylonite 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 Ceylonite- (Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references

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Astrophyllite and Ceylonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Ceylonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Ceylonite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 3.63-3.9 whereas that of Ceylonite is 3.63-3.9.