Astrophyllite and Jeremejevite Physical Properties

Astrophyllite

Jeremejevite

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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

3.2-3.4

3.28-3.31

1.5 Fracture

Uneven, Brittle, Metallic

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Perfect on [001] imperfect on [100]

None observed

1.7 Mohs Hardness

6.5-7.5

1.8 Chemical Composition

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

Al 6B 5O 15(F,OH) 3Ulrich Henn and Claudio C.

Astrophyllite and Jeremejevite Chemical Formula

While comparing Astrophyllite and Jeremejevite 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 Jeremejevite 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 Jeremejevite- Al 6B 5O 15(F,OH) 3Ulrich Henn and Claudio C.

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Astrophyllite and Jeremejevite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Jeremejevite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Jeremejevite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 3.28-3.31 whereas that of Jeremejevite is 3.28-3.31.