Pectolite and Ettringite Physical Properties

Pectolite

Ettringite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

2.74-2.901.77

1 7.18

1.5 Fracture

Uneven, Gemstones (2009), Splintery

Not Available

1.6 Cleavage

Perfect on {100} and {001}

Perfect on {10 1 0}

1.7 Mohs Hardness

4.5-52-2.5

2 10

1.8 Chemical Composition

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

Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Pectolite and Ettringite Chemical Formula

While comparing Pectolite and Ettringite 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 Ettringite chemical formula.

Chemical formula of Pectolite- Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Compare Colorless Gems

Pectolite Vs Phosphosiderite

Pectolite Vs Phosphophyllite

Pectolite Vs Pleonaste

Pectolite and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pectolite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pectolite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Pectolite is 1.77 whereas that of Ettringite is 1.77.