Riebeckite and Brazilianite Physical Properties

Riebeckite

Brazilianite

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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

3.28-3.442.98-2.99

1 7.18

1.5 Fracture

Uneven, Splintery, Brittle

Conchoidal, Gems

1.6 Cleavage

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

(010) Distinct to good

1.7 Mohs Hardness

5.0-6.05.5

2 10

1.8 Chemical Composition

Not Available

NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Riebeckite and Brazilianite Chemical Formula

While comparing Riebeckite and Brazilianite 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 Brazilianite chemical formula.

Chemical formula of Brazilianite- NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Riebeckite and Brazilianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Riebeckite and Brazilianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Riebeckite and Brazilianite Optical Properties during the identification of gemstone. Specific gravity of Riebeckite is 2.98-2.99 whereas that of Brazilianite is 2.98-2.99.