Fluorite and Oligoclase Physical Properties

Fluorite

Oligoclase

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

slightly water soluble and in hot hydrochloric acid

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.00-3.252.62-2.67

1 7.18

1.5 Fracture

Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven

1.6 Cleavage

Octahedral, perfect on {111}, parting on {011}

From the Greek, oligos and kasein, little cleavage.

1.7 Mohs Hardness

46-6.5

2 10

1.8 Chemical Composition

CaF₂

Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Fluorite and Oligoclase Chemical Formula

While comparing Fluorite and Oligoclase 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 Fluorite and Oligoclase chemical formula.

Chemical formula of Fluorite- CaF₂
Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Fluorite and Oligoclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fluorite and Oligoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorite and Oligoclase Optical Properties during the identification of gemstone. Specific gravity of Fluorite is 2.62-2.67 whereas that of Oligoclase is 2.62-2.67.