Charlesite and Calcite Physical Properties

Charlesite

Calcite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

1.792.67-2.73

1 7.18

1.5 Fracture

Irregular/uneven, Brittle, Metallic

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

1.6 Cleavage

Perfect on {10bar10}

Perfect on [10 1 1] three directions with angle of 74° 55

1.7 Mohs Hardness

2.53

2 10

1.8 Chemical Composition

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

CaCO 3Ulrich Henn and Claudio C.

Charlesite and Calcite Chemical Formula

While comparing Charlesite and Calcite 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 Calcite chemical formula.

Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

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Charlesite and Calcite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Charlesite and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charlesite and Calcite Optical Properties during the identification of gemstone. Specific gravity of Charlesite is 2.67-2.73 whereas that of Calcite is 2.67-2.73.