Corundum and Phosphosiderite Physical Properties

Corundum

Phosphosiderite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.90-4.052.74-2.76

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Difficult, Fibrous

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

1.6 Cleavage

None – parting in 3 directions

{010} Perfect, {001} Distinct

1.7 Mohs Hardness

93.5-4

2 10

1.8 Chemical Composition

Al 2O 3Arthur Thomas , Gemstones (2009)

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

Corundum and Phosphosiderite Chemical Formula

While comparing Corundum and Phosphosiderite 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 Corundum and Phosphosiderite chemical formula.

Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)

Compare Violet Gemstones

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Corundum and Phosphosiderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Corundum and Phosphosiderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Phosphosiderite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 2.74-2.76 whereas that of Phosphosiderite is 2.74-2.76.