Pectolite and Dravite Physical Properties

Pectolite

Dravite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.74-2.903.03-3.18

1 7.18

1.5 Fracture

Uneven, Gemstones (2009), Splintery

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

1.6 Cleavage

Perfect on {100} and {001}

{???} Indistinct

1.7 Mohs Hardness

4.5-57-7.5

2 10

1.8 Chemical Composition

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

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

Pectolite and Dravite Chemical Formula

While comparing Pectolite and Dravite 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 Pectolite and Dravite chemical formula.

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

Compare Colorless Gems

Pectolite Vs Pleonaste

Pectolite Vs Phosphosiderite

Pectolite Vs Phosphophyllite

Pectolite and Dravite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pectolite and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pectolite and Dravite Optical Properties during the identification of gemstone. Specific gravity of Pectolite is 3.03-3.18 whereas that of Dravite is 3.03-3.18.