Narsarsukite and Goethite Physical Properties

Narsarsukite

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

2.72-2.834.27-4.29

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

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

1.6 Cleavage

Good on {100} and {110}

Perfect {010}

1.7 Mohs Hardness

6-75-5.5

2 10

1.8 Chemical Composition

Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.

FeO(OH)Arthur Thomas , Gemstones (2009)

Narsarsukite and Goethite Chemical Formula

While comparing Narsarsukite 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 Narsarsukite and Goethite chemical formula.

Chemical formula of Narsarsukite- Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

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Narsarsukite and Goethite Specific Gravity

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