Friedelite and Goethite Physical Properties

Friedelite

Goethite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.06-3.194.27-4.29

1 7.18

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven

Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).

1.6 Cleavage

{010} Perfect

Perfect {010}

1.7 Mohs Hardness

4-55-5.5

2 10

1.8 Chemical Composition

Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

FeO(OH)Arthur Thomas , Gemstones (2009)

Friedelite and Goethite Chemical Formula

While comparing Friedelite and Goethite 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 Friedelite and Goethite chemical formula.

Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

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Friedelite and Goethite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Friedelite and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Friedelite and Goethite Optical Properties during the identification of gemstone. Specific gravity of Friedelite is 4.27-4.29 whereas that of Goethite is 4.27-4.29.