Amblygonite and Sellaite Physical Properties

Amblygonite

Sellaite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.98-3.103.14-3.16

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

1.6 Cleavage

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

Perfect on {010} and {110}

1.7 Mohs Hardness

65-5.5

2 10

1.8 Chemical Composition

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

MgF 2Ulrich Henn and Claudio C.

Amblygonite and Sellaite Chemical Formula

While comparing Amblygonite and Sellaite 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 Sellaite 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 Sellaite- MgF 2Ulrich Henn and Claudio C.

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Amblygonite and Sellaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amblygonite and Sellaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amblygonite and Sellaite Optical Properties during the identification of gemstone. Specific gravity of Amblygonite is 3.14-3.16 whereas that of Sellaite is 3.14-3.16.