Phosphosiderite and Poudretteite Physical Properties

Phosphosiderite

Poudretteite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.74-2.762.51-2.53

1 7.18

1.5 Fracture

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

Conchoidal, Splintery

1.6 Cleavage

{010} Perfect, {001} Distinct

None

1.7 Mohs Hardness

3.5-45

2 10

1.8 Chemical Composition

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

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Phosphosiderite and Poudretteite Chemical Formula

While comparing Phosphosiderite and Poudretteite 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 Poudretteite chemical formula.

Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

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Phosphosiderite and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phosphosiderite and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phosphosiderite and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Phosphosiderite is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.