Zoisite and Ludlamite Physical Properties

Zoisite

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

3.20-3.503.1-3.2

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Perfect {010} imperfect {100}

Vitreous, pearly on cleavage

1.7 Mohs Hardness

6-73-4

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

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

Zoisite and Ludlamite Chemical Formula

While comparing Zoisite 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 Zoisite and Ludlamite chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
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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Zoisite and Ludlamite Specific Gravity

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