Ludlamite and Hardystonite Physical Properties

Ludlamite

Hardystonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.1-3.23.396-3.443

1 7.18

1.5 Fracture

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

Brittle, Metallic

1.6 Cleavage

Vitreous, pearly on cleavage

[001] good, [100] and [110] fair

1.7 Mohs Hardness

3-43-4

2 10

1.8 Chemical Composition

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

Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Ludlamite and Hardystonite Chemical Formula

While comparing Ludlamite and Hardystonite 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 Hardystonite chemical formula.

Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

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Ludlamite and Hardystonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ludlamite and Hardystonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ludlamite and Hardystonite Optical Properties during the identification of gemstone. Specific gravity of Ludlamite is 3.396-3.443 whereas that of Hardystonite is 3.396-3.443.