Phosphosiderite and Gahnite Physical Properties

Phosphosiderite

Gahnite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.74-2.764.00-4.62

1 7.18

1.5 Fracture

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

Conchoidal, Uneven

1.6 Cleavage

{010} Perfect, {001} Distinct

Indistinct parting on [111]

1.7 Mohs Hardness

3.5-47.5-8

2 10

1.8 Chemical Composition

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

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Phosphosiderite and Gahnite Chemical Formula

While comparing Phosphosiderite and Gahnite 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 Gahnite chemical formula.

Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Phosphosiderite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phosphosiderite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phosphosiderite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Phosphosiderite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.