Weloganite and Creedite Physical Properties

Weloganite

Creedite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.222.70

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

Perfect on pseudo {0001}

Perfect on {100}

1.7 Mohs Hardness

34.5

2 10

1.8 Chemical Composition

Not Available

Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Weloganite and Creedite Chemical Formula

While comparing Weloganite and Creedite 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 Weloganite and Creedite chemical formula.

Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

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Weloganite and Creedite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Weloganite and Creedite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Weloganite and Creedite Optical Properties during the identification of gemstone. Specific gravity of Weloganite is 2.70 whereas that of Creedite is 2.70.