Sellaite and Triplite Physical Properties

Sellaite

Triplite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.14-3.163.85-3.94

1 7.18

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Uneven

1.6 Cleavage

Perfect on {010} and {110}

{010} Good, {100} Distinct

1.7 Mohs Hardness

5-5.55-5.5

2 10

1.8 Chemical Composition

MgF 2Ulrich Henn and Claudio C.

(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)

Sellaite and Triplite Chemical Formula

While comparing Sellaite and Triplite 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 Sellaite and Triplite chemical formula.

Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
Chemical formula of Triplite- (Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)

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Sellaite and Triplite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sellaite and Triplite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sellaite and Triplite Optical Properties during the identification of gemstone. Specific gravity of Sellaite is 3.85-3.94 whereas that of Triplite is 3.85-3.94.