Spodumene and Astrophyllite Physical Properties

Spodumene

Astrophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.15-3.213.2-3.4

1 7.18

1.5 Fracture

Uneven, Subconchoidal, Gemstones (2009)

Uneven, Brittle, Metallic

1.6 Cleavage

Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

6-73

2 10

1.8 Chemical Composition

LiAlSi₂O₆

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

Spodumene and Astrophyllite Chemical Formula

While comparing Spodumene 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 Spodumene and Astrophyllite chemical formula.

Chemical formula of Spodumene- LiAlSi₂O₆
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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Spodumene and Astrophyllite Specific Gravity

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