Goethite and Antigorite Physical Properties

Goethite

Antigorite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

HCl soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.27-4.292.58-2.80

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Metallic, Conchoidal, Handbook of mineralogy (2001)

1.6 Cleavage

Perfect {010}

{001} Good

1.7 Mohs Hardness

5-5.55-5.5

2 10

1.8 Chemical Composition

FeO(OH)Arthur Thomas , Gemstones (2009)

(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

Goethite and Antigorite Chemical Formula

While comparing Goethite and Antigorite 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 Goethite and Antigorite chemical formula.

Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Chemical formula of Antigorite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

Compare Brown Gemstones

Goethite Vs Jadeite

Goethite Vs Kyanite Cyprine

Goethite Vs Jacobsite

Goethite and Antigorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Goethite and Antigorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Goethite and Antigorite Optical Properties during the identification of gemstone. Specific gravity of Goethite is 2.58-2.80 whereas that of Antigorite is 2.58-2.80.