Astrophyllite and Scheelite Physical Properties

Astrophyllite

Scheelite

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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

3.2-3.45.9-6.3

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Uneven

1.6 Cleavage

Perfect on [001] imperfect on [100]

On {101}, distinct; on {112}, interrupted; on {001}, indistinct

1.7 Mohs Hardness

34.5-5

2 10

1.8 Chemical Composition

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

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

Astrophyllite and Scheelite Chemical Formula

While comparing Astrophyllite and Scheelite 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 Scheelite 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 Scheelite- CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Astrophyllite and Scheelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Scheelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Scheelite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 5.9-6.3 whereas that of Scheelite is 5.9-6.3.