Kyanite and Pectolite Physical Properties

Kyanite

Pectolite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.652.74-2.90

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Uneven, Gemstones (2009), Splintery

1.6 Cleavage

[100] perfect [010] imperfect with 79° angle between

Perfect on {100} and {001}

1.7 Mohs Hardness

4-74.5-5

2 10

1.8 Chemical Composition

Not Available

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

Kyanite and Pectolite Chemical Formula

While comparing Kyanite 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 Kyanite and Pectolite chemical formula.

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

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Kyanite and Pectolite Specific Gravity

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