Astrophyllite and Rutilated Quartz Physical Properties

Astrophyllite

Rutilated Quartz

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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

3.2-3.42.65

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect on [001] imperfect on [100]

Indiscernible

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)

Quartz: SiO₂ Rutile: TiO2

Astrophyllite and Rutilated Quartz Chemical Formula

While comparing Astrophyllite and Rutilated Quartz 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 Rutilated Quartz 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 Rutilated Quartz- Quartz: SiO₂ Rutile: TiO2

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Astrophyllite and Rutilated Quartz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Rutilated Quartz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Rutilated Quartz Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 2.65 whereas that of Rutilated Quartz is 2.65.