Brazilianite and Riebeckite Physical Properties

Brazilianite

Riebeckite

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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

2.98-2.993.28-3.44

1 7.18

1.5 Fracture

Conchoidal, Gems

Uneven, Splintery, Brittle

1.6 Cleavage

(010) Distinct to good

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

1.7 Mohs Hardness

5.55.0-6.0

2 10

1.8 Chemical Composition

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

Not Available

Brazilianite and Riebeckite Chemical Formula

While comparing Brazilianite and Riebeckite 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 Brazilianite and Riebeckite 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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Brazilianite and Riebeckite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brazilianite and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brazilianite and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Brazilianite is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.