Caledonite and Spodumene Physical Properties

Caledonite

Spodumene

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

5.6-5.763.15-3.21

1 7.18

1.5 Fracture

Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)

Uneven, Subconchoidal, Gemstones (2009)

1.6 Cleavage

[001] perfect; [100] distinct

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

1.7 Mohs Hardness

2.5-36-7

2 10

1.8 Chemical Composition

Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)

LiAlSi₂O₆

Caledonite and Spodumene Chemical Formula

While comparing Caledonite 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 Caledonite and Spodumene chemical formula.

Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Spodumene- LiAlSi₂O₆

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Caledonite and Spodumene Specific Gravity

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