Phenakite and Oligoclase Physical Properties

Phenakite

Oligoclase

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-2.982.62-2.67

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

From the Greek, oligos and kasein, little cleavage.

1.7 Mohs Hardness

7.5-86-6.5

2 10

1.8 Chemical Composition

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

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

Phenakite and Oligoclase Chemical Formula

While comparing Phenakite 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 Phenakite and Oligoclase chemical formula.

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

Compare Colorless Gems

Phenakite Vs Quartz

Phenakite Vs Pyromorphite

Phenakite Vs Prase Opal

Phenakite and Oligoclase Specific Gravity

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