Topaz and Bastnasite Physical Properties

Topaz

Bastnasite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.49-3.574.95-5.0

1 7.18

1.5 Fracture

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Uneven

1.6 Cleavage

[001] Perfect

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

1.7 Mohs Hardness

84-5

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

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

Topaz and Bastnasite Chemical Formula

While comparing Topaz and Bastnasite 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 Topaz and Bastnasite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Bastnasite- (Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Gems for Sagittarius

Topaz Vs Pietersite

Topaz Vs Petoskey Stone

Topaz Vs Quartz Smoky

Topaz and Bastnasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Bastnasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Bastnasite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 4.95-5.0 whereas that of Bastnasite is 4.95-5.0.