Zoisite and Oligoclase Physical Properties

Zoisite

Oligoclase

Add ⊕

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.20-3.502.62-2.67

1 7.18

👆🏻

Fracture

Uneven, Conchoidal, Even

Uneven

Cleavage

Perfect {010} imperfect {100}

From the Greek, oligos and kasein, little cleavage.

Mohs Hardness

6-76-6.5

2 10

👆🏻

Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

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

Zoisite and Oligoclase Chemical Formula

While comparing Zoisite 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 Zoisite and Oligoclase chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Brown Gemstones

Zoisite Vs Mottramite

Zoisite Vs Pyrrhotite

Zoisite Vs Vesuvianite

Zoisite and Oligoclase Specific Gravity

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