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Alunite
Alunite

Phosphosiderite
Phosphosiderite



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Alunite
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Phosphosiderite

Alunite and Phosphosiderite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6
 
-
-
-
2.74-2.76
Uneven
{010} Perfect, {001} Distinct
3.5-4
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)

Alunite and Phosphosiderite Chemical Formula

While comparing Alunite 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 Alunite and Phosphosiderite chemical formula.

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Alunite and Phosphosiderite Specific Gravity

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