Celestine and Astrophyllite Physical Properties

Celestine

Astrophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.90-4.003.2-3.4

1 7.18

1.5 Fracture

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

Uneven, Brittle, Metallic

1.6 Cleavage

Perfect on {001}, good on {210}, poor on {010}

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

3-3.53

2 10

1.8 Chemical Composition

SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Celestine and Astrophyllite Chemical Formula

While comparing Celestine 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 Celestine and Astrophyllite chemical formula.

Chemical formula of Celestine- SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

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Celestine and Astrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Celestine and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Celestine and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Celestine is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.