Chiastolite and Goethite Physical Properties

Chiastolite

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

3.00-3.15

4.27-4.29

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

Perfect {010}

1.7 Mohs Hardness

5-5.5

1.8 Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)

FeO(OH)Arthur Thomas , Gemstones (2009)

Chiastolite and Goethite Chemical Formula

While comparing Chiastolite 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 Chiastolite and Goethite chemical formula.

Chemical formula of Chiastolite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

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Chiastolite and Goethite Specific Gravity

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