Pectolite and Obsidian Physical Properties

Pectolite

Obsidian

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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

2.74-2.902.35-2.60

1 7.18

1.5 Fracture

Uneven, Gemstones (2009), Splintery

Conchoidal, ConchoidalWalter Schumann, Conchoidal

1.6 Cleavage

Perfect on {100} and {001}

Not Available

1.7 Mohs Hardness

4.5-55-5.5

2 10

1.8 Chemical Composition

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

Not Available

Pectolite and Obsidian Chemical Formula

While comparing Pectolite and Obsidian 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 Obsidian chemical formula.

Chemical formula of Pectolite- Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.

Compare Colorless Gems

Pectolite Vs Phosphophyllite

Pectolite Vs Phosphosiderite

Pectolite Vs Pleonaste

Pectolite and Obsidian Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pectolite and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pectolite and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Pectolite is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.