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Topaz
Topaz

Phosphosiderite
Phosphosiderite



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Topaz and Phosphosiderite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.49-3.57
2.74-2.76
1.5 Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Uneven
1.6 Cleavage
[001] Perfect
{010} Perfect, {001} Distinct
1.7 Mohs Hardness
8
3.5-4
1.8 Chemical Composition
Al2SiO4(F,OH)2
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)

Topaz and Phosphosiderite Chemical Formula

While comparing Topaz 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 Topaz and Phosphosiderite chemical formula.

  • Chemical formula of Topaz- Al2SiO4(F,OH)2
  • Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)

Topaz and Phosphosiderite Specific Gravity

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