Hardystonite and Ludlamite Physical Properties

Hardystonite

Ludlamite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.396-3.4433.1-3.2

1 7.18

1.5 Fracture

Brittle, Metallic

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

1.6 Cleavage

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

Vitreous, pearly on cleavage

1.7 Mohs Hardness

3-43-4

2 10

1.8 Chemical Composition

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

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

Hardystonite and Ludlamite Chemical Formula

While comparing Hardystonite 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 Hardystonite and Ludlamite chemical formula.

Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
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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Hardystonite and Ludlamite Specific Gravity

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