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Herderite and Ludlamite Physical Properties


Ludlamite and Herderite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.90-3.02   
3.1-3.2   

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

Cleavage
Indistinct on {110}   
Vitreous, pearly on cleavage   

Mohs Hardness
5-5.5   
3-4   

Chemical Composition
CaBePO 4(F,OH)Ulrich Henn and Claudio C.   
(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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Herderite and Ludlamite Chemical Formula

While comparing Herderite 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 Herderite and Ludlamite chemical formula.

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Herderite and Ludlamite Specific Gravity

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

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