Hackmanite and Creedite Physical Properties

Hackmanite

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

2.27-2.332.70

1 7.18

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Not Available

Perfect on {100}

1.7 Mohs Hardness

5.5-64.5

2 10

1.8 Chemical Composition

Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Hackmanite and Creedite Chemical Formula

While comparing Hackmanite 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 Hackmanite and Creedite chemical formula.

Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

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Hackmanite and Creedite Specific Gravity

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