Dumortierite and Ludlamite Physical Properties

Dumortierite

Ludlamite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.26-3.413.1-3.2

1 7.18

1.5 Fracture

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Distinct on {100}, poor on {110}; parting on {001}

Vitreous, pearly on cleavage

1.7 Mohs Hardness

7-8.53-4

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

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

Dumortierite and Ludlamite Chemical Formula

While comparing Dumortierite 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 Dumortierite and Ludlamite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Dumortierite and Ludlamite Specific Gravity

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