Prasiolite and Goethite Physical Properties

Prasiolite

Goethite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.654.27-4.29

1 7.18

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

3,1

Perfect {010}

1.7 Mohs Hardness

75-5.5

2 10

1.8 Chemical Composition

SiO 2Ulrich Henn and Claudio C.

FeO(OH)Arthur Thomas , Gemstones (2009)

Prasiolite and Goethite Chemical Formula

While comparing Prasiolite 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 Prasiolite and Goethite chemical formula.

Chemical formula of Prasiolite- SiO 2Ulrich Henn and Claudio C.
Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

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Prasiolite and Goethite Specific Gravity

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