Sunstone and Spodumene Physical Properties

Sunstone

Spodumene

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.62-2.653.15-3.21

1 7.18

1.5 Fracture

Gemstones of the world (2001)

Uneven, Subconchoidal, Gemstones (2009)

1.6 Cleavage

001

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

1.7 Mohs Hardness

66-7

2 10

1.8 Chemical Composition

Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈

LiAlSi₂O₆

Sunstone and Spodumene Chemical Formula

While comparing Sunstone and Spodumene 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 Sunstone and Spodumene chemical formula.

Chemical formula of Sunstone- Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈
Chemical formula of Spodumene- LiAlSi₂O₆

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Sunstone and Spodumene Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sunstone and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sunstone and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Sunstone is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.