Oligoclase and Creedite Physical Properties

Oligoclase

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

2.62-2.672.70

1 7.18

1.5 Fracture

Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven

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

1.6 Cleavage

From the Greek, oligos and kasein, little cleavage.

Perfect on {100}

1.7 Mohs Hardness

6-6.54.5

2 10

1.8 Chemical Composition

Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Oligoclase and Creedite Chemical Formula

While comparing Oligoclase 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 Oligoclase and Creedite chemical formula.

Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Compare Colorless Gems

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Oligoclase Vs Pezzottaite

Oligoclase Vs Phosphophyllite

Oligoclase and Creedite Specific Gravity

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