Sillimanite and Phosphosiderite Physical Properties

Sillimanite

Phosphosiderite

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1 Physical Properties

1.1 Tenacity

Tough

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.262.74-2.76

1 7.18

1.5 Fracture

Splintery

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

1.6 Cleavage

{010} perfect

{010} Perfect, {001} Distinct

1.7 Mohs Hardness

6-7.53.5-4

2 10

1.8 Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Sillimanite and Phosphosiderite Chemical Formula

While comparing Sillimanite 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 Sillimanite and Phosphosiderite chemical formula.

Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)

Compare Blue Gemstones

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Sillimanite and Phosphosiderite Specific Gravity

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