Goethite and Phenakite Physical Properties

Goethite

Phenakite

Add ⊕

Physical Properties

Tenacity

Brittle

Solubility

HCl soluble

Durability

Specific Gravity

4.27-4.292.90-2.98

1 7.18

👆🏻

Fracture

Uneven

Conchoidal, ConchoidalWalter Schumann

Cleavage

Perfect {010}

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

Mohs Hardness

5-5.57.5-8

2 10

👆🏻

Chemical Composition

FeO(OH)Arthur Thomas , Gemstones (2009)

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

Goethite and Phenakite Chemical Formula

While comparing Goethite and Phenakite 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 Phenakite chemical formula.

Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Brown Gemstones

Goethite Vs Manganaxinite

Goethite Vs Mellite

Goethite Vs Povondraite

Goethite and Phenakite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Goethite and Phenakite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Goethite and Phenakite Optical Properties during the identification of gemstone. Specific gravity of Goethite is 2.90-2.98 whereas that of Phenakite is 2.90-2.98.