Ludlamite and Sellaite Physical Properties

Ludlamite

Sellaite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.1-3.2

Vitreous, pearly on cleavage

3-4

(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Brittle

3.14-3.16

Conchoidal

Perfect on {010} and {110}

5-5.5

MgF 2Ulrich Henn and Claudio C.

Ludlamite and Sellaite Chemical Formula

While comparing Ludlamite 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 Ludlamite and Sellaite chemical formula.

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Ludlamite and Sellaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ludlamite and Sellaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ludlamite Vs Sellaite during the identification of gemstone. Specific gravity of Ludlamite is whereas that of Sellaite is .