Properties of Obsidian and Basalt

Obsidian

Basalt

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

5-5.56

1 7

1.1.2 Grain Size

Not Applicable

Fine Grained

1.1.3 Fracture

Conchoidal

1.1.4 Streak

White

White to Grey

1.1.5 Porosity

Very Less Porous

Less Porous

1.1.6 Luster

Vitreous

Not Available

1.1.7 Compressive Strength

0.15 N/mm²37.40 N/mm²

0.15 450

1.1.8 Cleavage

Non-Existent

Not Available

1.1.9 Toughness

Not Available

2.3

1.1.10 Specific Gravity

2.6-2.72.8-3

0 8.4

1.1.11 Transparency

Translucent

Opaque

1.1.12 Density

2.6 g/cm³2.9-3.1 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

0.92 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

1.2.2 Resistance

Heat Resistant, Impact Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

Obsidian vs Basalt Properties

Properties of Obsidian and Basalt play an important role in determining the type of rock. Along with Obsidian vs Basalt properties, get to know more about Obsidian Definition and Basalt Definition. For the ease of understanding, the properties of rocks are divided into physical and thermal properties. Rocks have a variety of properties like hardness, color, specific gravity, fracture, cleavage, luster etc. Know all about physical and thermal properties of Obsidian and Basalt.