Charlesite and Powellite Physical Properties

Charlesite

Powellite

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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

1.794.23

1 7.18

1.5 Fracture

Irregular/uneven, Brittle, Metallic

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

1.6 Cleavage

Perfect on {10bar10}

{111} Distinct

1.7 Mohs Hardness

2.53.5-4

2 10

1.8 Chemical Composition

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

CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Charlesite and Powellite Chemical Formula

While comparing Charlesite and Powellite 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 Powellite chemical formula.

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

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Charlesite and Powellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Charlesite and Powellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charlesite and Powellite Optical Properties during the identification of gemstone. Specific gravity of Charlesite is 4.23 whereas that of Powellite is 4.23.