Oligoclase and Phenakite Physical Properties

Oligoclase

Phenakite

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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

2.62-2.672.90-2.98

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle

1.6 Cleavage

From the Greek, oligos and kasein, little cleavage.

Distinct on {11 2 0}, imperfect on {10 1 1}

1.7 Mohs Hardness

6-6.57.5-8

2 10

1.8 Chemical Composition

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

Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Oligoclase and Phenakite Chemical Formula

While comparing Oligoclase and Phenakite 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 Oligoclase and Phenakite chemical formula.

Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Colorless Gems

Oligoclase Vs Pezzottaite

Oligoclase Vs Phosphophyllite

Oligoclase Vs Phenakite

Oligoclase and Phenakite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Oligoclase and Phenakite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase and Phenakite Optical Properties during the identification of gemstone. Specific gravity of Oligoclase is 2.90-2.98 whereas that of Phenakite is 2.90-2.98.