Cordierite and Phosphosiderite Physical Properties

Cordierite

Phosphosiderite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.57-2.662.74-2.76

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

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

1.6 Cleavage

Fair on {100}, poor on {001} and {010}

{010} Perfect, {001} Distinct

1.7 Mohs Hardness

7-7.53.5-4

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

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

Cordierite and Phosphosiderite Chemical Formula

While comparing Cordierite 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 Cordierite and Phosphosiderite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)

Compare Blue Gemstones

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Cordierite Vs Rosasite

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Cordierite and Phosphosiderite Specific Gravity

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