Goethite and Charoite Physical Properties

Goethite

Charoite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

HCl soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.27-4.292.54-2.78

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect {010}

Good in three directions

1.7 Mohs Hardness

5-5.55-6

2 10

1.8 Chemical Composition

FeO(OH)Arthur Thomas , Gemstones (2009)

K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Goethite and Charoite Chemical Formula

While comparing Goethite and Charoite 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 Charoite chemical formula.

Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Goethite and Charoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Goethite and Charoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Goethite and Charoite Optical Properties during the identification of gemstone. Specific gravity of Goethite is 2.54-2.78 whereas that of Charoite is 2.54-2.78.