Charlesite and Anhydrite Physical Properties

Charlesite

Anhydrite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.792.90-2.98

1 7.18

1.5 Fracture

Irregular/uneven, Brittle, Metallic

Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

Perfect on {10bar10}

Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.

1.7 Mohs Hardness

2.53.5

2 10

1.8 Chemical Composition

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

CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Charlesite and Anhydrite Chemical Formula

While comparing Charlesite and Anhydrite 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 Anhydrite chemical formula.

Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Charlesite and Anhydrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Charlesite and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charlesite and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Charlesite is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.