Edenite and Obsidian Physical Properties

Edenite

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

3.05-3.372.35-2.60

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Conchoidal, ConchoidalWalter Schumann, Conchoidal

1.6 Cleavage

Good on (110)

Not Available

1.7 Mohs Hardness

5-65-5.5

2 10

1.8 Chemical Composition

NaCa2Mg5Si7AlO22(OH)2

Not Available

Edenite and Obsidian Chemical Formula

While comparing Edenite 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 Edenite and Obsidian chemical formula.

Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2

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Edenite and Obsidian Specific Gravity

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