Allanite and Pectolite Physical Properties

Allanite

Pectolite

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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

3.40-4.202.74-2.90

1 7.18

1.5 Fracture

Not Available

Uneven, Gemstones (2009), Splintery

1.6 Cleavage

Not Available

Perfect on {100} and {001}

1.7 Mohs Hardness

Not Available4.5-5

2 10

1.8 Chemical Composition

Not Available

Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.

Allanite and Pectolite Chemical Formula

While comparing Allanite and Pectolite 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 Allanite and Pectolite chemical formula.

Chemical formula of Pectolite- Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.

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Allanite and Pectolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Allanite and Pectolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Allanite and Pectolite Optical Properties during the identification of gemstone. Specific gravity of Allanite is 2.74-2.90 whereas that of Pectolite is 2.74-2.90.