Pleonaste and Creedite Physical Properties

Pleonaste

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

3.802.70

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

Perfect on {100}

1.7 Mohs Hardness

84.5

2 10

1.8 Chemical Composition

(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

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

Pleonaste and Creedite Chemical Formula

While comparing Pleonaste 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 Pleonaste and Creedite chemical formula.

Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Compare Blue Gemstones

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Pleonaste Vs Pyrophyllite

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Pleonaste and Creedite Specific Gravity

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