Diaspore and Astrophyllite Physical Properties

Diaspore

Astrophyllite

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1 Physical Properties

1.1 Tenacity

Very brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.30-3.40

3.2-3.4

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Uneven, Brittle, Metallic

1.6 Cleavage

{010} perfect, {110} distinct, {100} in traces

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

6.5-7

1.8 Chemical Composition

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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

Diaspore and Astrophyllite Chemical Formula

While comparing Diaspore 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 Diaspore and Astrophyllite chemical formula.

Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) 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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Diaspore and Astrophyllite Specific Gravity

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