Phosphosiderite and Andalusite Physical Properties

Phosphosiderite

Andalusite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

2.74-2.76

Uneven

{010} Perfect, {001} Distinct

3.5-4

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

3.05-3.21

Uneven, Subconchoidal, Splintery

Good on {110}, poor on {100}

7.5

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Phosphosiderite and Andalusite Chemical Formula

While comparing Phosphosiderite and Andalusite 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 Andalusite chemical formula.

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Phosphosiderite and Andalusite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phosphosiderite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phosphosiderite Vs Andalusite during the identification of gemstone. Specific gravity of Phosphosiderite is whereas that of Andalusite is .