Pectolite and Afghanite Physical Properties

Pectolite

Afghanite

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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

2.74-2.902.55-2.65

1 7.18

1.5 Fracture

Uneven, Gemstones (2009), Splintery

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle

1.6 Cleavage

Perfect on {100} and {001}

Perfect {10 1 0}

1.7 Mohs Hardness

4.5-55.5-6

2 10

1.8 Chemical Composition

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

(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

Pectolite and Afghanite Chemical Formula

While comparing Pectolite and Afghanite 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 Afghanite chemical formula.

Chemical formula of Pectolite- Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.
Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

Compare Colorless Gems

Pectolite Vs Phosphophyllite

Pectolite Vs Phosphosiderite

Pectolite Vs Pleonaste

Pectolite and Afghanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pectolite and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pectolite and Afghanite Optical Properties during the identification of gemstone. Specific gravity of Pectolite is 2.55-2.65 whereas that of Afghanite is 2.55-2.65.