Bastnasite and Nuummite Physical Properties

Bastnasite

Nuummite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.95-5.03.18-3.37

1 7.18

1.5 Fracture

Uneven

Conchoidal

1.6 Cleavage

Imperfect to indistinct on {10 1 0}, parting on {0001}

Perfect on 210

1.7 Mohs Hardness

4-55.5-6

2 10

1.8 Chemical Composition

(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Not Available

Bastnasite and Nuummite Chemical Formula

While comparing Bastnasite and Nuummite 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 Bastnasite and Nuummite chemical formula.

Chemical formula of Bastnasite- (Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Bastnasite and Nuummite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bastnasite and Nuummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bastnasite and Nuummite Optical Properties during the identification of gemstone. Specific gravity of Bastnasite is 3.18-3.37 whereas that of Nuummite is 3.18-3.37.