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Legrandite and Ludlamite Physical Properties


Ludlamite and Legrandite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.98-4.04   
3.1-3.2   

Fracture
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle   
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)   

Cleavage
Imperfect, poor one {100}   
Vitreous, pearly on cleavage   

Mohs Hardness
4.5-5   
3-4   

Chemical Composition
Zn 2(AsO 4)(OH) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Legrandite and Ludlamite Chemical Formula

While comparing Legrandite and Ludlamite 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 Legrandite and Ludlamite chemical formula.

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Legrandite and Ludlamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Legrandite and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Legrandite and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Legrandite is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.

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