Achroite and Pectolite Physical Properties

Achroite

Pectolite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.402.74-2.90

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

Uneven, Gemstones (2009), Splintery

1.6 Cleavage

Not Available

Perfect on {100} and {001}

1.7 Mohs Hardness

7-7.54.5-5

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

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

Achroite and Pectolite Chemical Formula

While comparing Achroite 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 Achroite and Pectolite chemical formula.

Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Chemical formula of Pectolite- Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.

Compare Gems Found in South Asia

Achroite Vs Apophyllite

Achroite Vs Apatite

Achroite Vs Aquamarine

Achroite and Pectolite Specific Gravity

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