Phosphosiderite and Goethite Physical Properties

Phosphosiderite

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

2.74-2.764.27-4.29

1 7.18

1.5 Fracture

UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Uneven

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

1.6 Cleavage

{010} Perfect, {001} Distinct

Perfect {010}

1.7 Mohs Hardness

3.5-45-5.5

2 10

1.8 Chemical Composition

Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)

FeO(OH)Arthur Thomas , Gemstones (2009)

Phosphosiderite and Goethite Chemical Formula

While comparing Phosphosiderite 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 Phosphosiderite and Goethite chemical formula.

Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

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Phosphosiderite and Goethite Specific Gravity

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