Violane and Goethite Physical Properties

Violane

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

3.22-3.404.27-4.29

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

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

5-65-5.5

2 10

1.8 Chemical Composition

(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)

FeO(OH)Arthur Thomas , Gemstones (2009)

Violane and Goethite Chemical Formula

While comparing Violane 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 Violane and Goethite chemical formula.

Chemical formula of Violane- (Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

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Violane and Goethite Specific Gravity

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