Dravite and Pectolite Physical Properties

Dravite

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

3.03-3.182.74-2.90

1 7.18

1.5 Fracture

Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Uneven, Gemstones (2009), Splintery

1.6 Cleavage

{???} Indistinct

Perfect on {100} and {001}

1.7 Mohs Hardness

7-7.54.5-5

2 10

1.8 Chemical Composition

Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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

Dravite and Pectolite Chemical Formula

While comparing Dravite 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 Dravite and Pectolite chemical formula.

Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Pectolite- Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.

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Dravite and Pectolite Specific Gravity

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