Charlesite and Fayalite Physical Properties

Charlesite

Fayalite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.794.392

1 7.18

1.5 Fracture

Irregular/uneven, Brittle, Metallic

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

Perfect on {10bar10}

{010} moderate, {100} imperfect

1.7 Mohs Hardness

2.56.5-7

2 10

1.8 Chemical Composition

Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Charlesite and Fayalite Chemical Formula

While comparing Charlesite and Fayalite 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 Charlesite and Fayalite chemical formula.

Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Charlesite and Fayalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Charlesite and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charlesite and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Charlesite is 4.392 whereas that of Fayalite is 4.392.