Oligoclase and Forsterite Physical Properties

Oligoclase

Forsterite

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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

2.62-2.673.23-3.26

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

From the Greek, oligos and kasein, little cleavage.

Perfect on {010} imperfect on {100}

1.7 Mohs Hardness

6-6.56.5-7

2 10

1.8 Chemical Composition

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

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

Oligoclase and Forsterite Chemical Formula

While comparing Oligoclase and Forsterite 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 Forsterite 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 Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Colorless Gems

Oligoclase Vs Phenakite

Oligoclase Vs Pezzottaite

Oligoclase Vs Phosphophyllite

Oligoclase and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Oligoclase and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Oligoclase is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.