Purpurite and Creedite Physical Properties

Purpurite

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

3.2-3.42.70

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

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

1.6 Cleavage

[100] [001] perfect

Perfect on {100}

1.7 Mohs Hardness

4-4.54.5

2 10

1.8 Chemical Composition

MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

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

Purpurite and Creedite Chemical Formula

While comparing Purpurite 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 Purpurite and Creedite chemical formula.

Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

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Purpurite and Creedite Specific Gravity

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