Forsterite and Oligoclase Physical Properties

Forsterite

Oligoclase

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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

3.23-3.262.62-2.67

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

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

1.6 Cleavage

Perfect on {010} imperfect on {100}

From the Greek, oligos and kasein, little cleavage.

1.7 Mohs Hardness

6.5-76-6.5

2 10

1.8 Chemical Composition

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Forsterite and Oligoclase Chemical Formula

While comparing Forsterite 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 Forsterite and Oligoclase chemical formula.

Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

Forsterite Vs Grossular

Forsterite Vs Grandidierite

Forsterite Vs Hackmanite

Forsterite and Oligoclase Specific Gravity

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