Agrellite and Creedite Physical Properties

Agrellite

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

2.882.70

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

perfect [110]

Perfect on {100}

1.7 Mohs Hardness

5.54.5

2 10

1.8 Chemical Composition

NaCa2Si4O10F

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

Agrellite and Creedite Chemical Formula

While comparing Agrellite 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 Agrellite and Creedite chemical formula.

Chemical formula of Agrellite- NaCa2Si4O10F
Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

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Agrellite and Creedite Specific Gravity

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