Smoky Quartz and Astrophyllite Physical Properties

Smoky Quartz

Astrophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.653.2-3.4

1 7.18

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

Uneven, Brittle, Metallic

1.6 Cleavage

{0110} Indistinct

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

SiO₂

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

Smoky Quartz and Astrophyllite Chemical Formula

While comparing Smoky Quartz 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 Smoky Quartz and Astrophyllite chemical formula.

Chemical formula of Smoky Quartz- SiO₂
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Compare Gems for Sagittarius

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Smoky Quartz and Astrophyllite Specific Gravity

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