Goethite and Zoisite Physical Properties

Goethite

Zoisite

Add ⊕

Physical Properties

Tenacity

Solubility

HCl soluble

Durability

Specific Gravity

4.27-4.293.20-3.50

1 7.18

👆🏻

Fracture

Uneven

Uneven, Conchoidal, Even

Cleavage

Perfect {010}

Perfect {010} imperfect {100}

Mohs Hardness

5-5.56-7

2 10

👆🏻

Chemical Composition

FeO(OH)Arthur Thomas , Gemstones (2009)

Ca₂Al₃(SiO₄)₃(OH)

Goethite and Zoisite Chemical Formula

While comparing Goethite and Zoisite 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 Goethite and Zoisite chemical formula.

Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)

Compare Brown Gemstones

Goethite Vs Manganaxinite

Goethite Vs Mellite

Goethite Vs Povondraite

Goethite and Zoisite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Goethite and Zoisite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Goethite and Zoisite Optical Properties during the identification of gemstone. Specific gravity of Goethite is 3.20-3.50 whereas that of Zoisite is 3.20-3.50.