Riebeckite and Ludlamite Physical Properties

Riebeckite

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

3.28-3.443.1-3.2

1 7.18

1.5 Fracture

Uneven, Splintery, Brittle

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

1.6 Cleavage

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

Vitreous, pearly on cleavage

1.7 Mohs Hardness

5.0-6.03-4

2 10

1.8 Chemical Composition

Not Available

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

Riebeckite and Ludlamite Chemical Formula

While comparing Riebeckite 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 Riebeckite and Ludlamite chemical formula.

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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Riebeckite and Ludlamite Specific Gravity

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