Astrophyllite and Eosphorite Physical Properties

Astrophyllite

Eosphorite

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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

3.2-3.43.05-3.08

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

Subconchoidal, Uneven, Conchoidal, Uneven

1.6 Cleavage

Perfect on [001] imperfect on [100]

Poor on {100}

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

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

Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Astrophyllite and Eosphorite Chemical Formula

While comparing Astrophyllite and Eosphorite 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 Eosphorite 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 Eosphorite- Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Astrophyllite and Eosphorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Eosphorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Eosphorite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 3.05-3.08 whereas that of Eosphorite is 3.05-3.08.