Amblygonite and Covellite Physical Properties

Amblygonite

Covellite

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1 Physical Properties

1.1 Tenacity

Not Available

Flexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.98-3.104.6-4.76

1 7.18

1.5 Fracture

Sub-Conchoidal, Irregular/uneven, Sub-Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

1.6 Cleavage

[100] Perfect, [110] Good, [011] Distinct

Perfect on {0001}

1.7 Mohs Hardness

6Not Available

2 10

1.8 Chemical Composition

(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Amblygonite and Covellite Chemical Formula

While comparing Amblygonite and Covellite 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 Amblygonite and Covellite chemical formula.

Chemical formula of Amblygonite- (Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Amblygonite and Covellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amblygonite and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amblygonite and Covellite Optical Properties during the identification of gemstone. Specific gravity of Amblygonite is 4.6-4.76 whereas that of Covellite is 4.6-4.76.