Bastnasite and Obsidian Physical Properties

Bastnasite

Obsidian

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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

4.95-5.02.35-2.60

1 7.18

1.5 Fracture

Uneven

Conchoidal, ConchoidalWalter Schumann, Conchoidal

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

4-55-5.5

2 10

1.8 Chemical Composition

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

Not Available

Bastnasite and Obsidian Chemical Formula

While comparing Bastnasite and Obsidian 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 Obsidian 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 Obsidian Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bastnasite and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bastnasite and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Bastnasite is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.