Kyanite and Goethite Physical Properties

Kyanite

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

3.53-3.65

4.27-4.29

1.5 Fracture

Splintery, Brittle, Metallic

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

1.6 Cleavage

[100] perfect [010] imperfect with 79° angle between

Perfect {010}

1.7 Mohs Hardness

4-7

5-5.5

1.8 Chemical Composition

Not Available

FeO(OH)Arthur Thomas , Gemstones (2009)

Kyanite and Goethite Chemical Formula

While comparing Kyanite 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 Kyanite and Goethite chemical formula.

Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

Compare Blue Gemstones

Kyanite Vs Blue quartz

Kyanite Vs Swiss blue topaz

Kyanite Vs Kashmir sapphire

Kyanite and Goethite Specific Gravity

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

Blue Gemstones

Tourmaline Bi Color

Quantum Quattro

Cat s Eye

Milky quartz

Kashmir sapphire

Blue quartz