Properties of Obsidian and Chert

Obsidian

Chert

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

5-5.56.5-7

1 7

1.1.2 Grain Size

Not Applicable

Very fine-grained

1.1.3 Fracture

Conchoidal

Uneven, Splintery or Conchoidal

1.1.4 Streak

White

1.1.5 Porosity

Very Less Porous

Highly Porous

1.1.6 Luster

Vitreous

Waxy and Dull

1.1.7 Compressive Strength

0.15 N/mm²450.00 N/mm²

0.15 450

1.1.8 Cleavage

Non-Existent

1.1.9 Toughness

Not Available

1.5

1.1.10 Specific Gravity

2.6-2.72.5-2.8

0 8.4

1.1.11 Transparency

Translucent

Translucent to Opaque

1.1.12 Density

2.6 g/cm³2.7 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

0.92 kJ/Kg K0.74 kJ/Kg K

0.14 3.2

1.2.2 Resistance

Heat Resistant, Impact Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Obsidian vs Chert Properties

Properties of Obsidian and Chert play an important role in determining the type of rock. Along with Obsidian vs Chert properties, get to know more about Obsidian Definition and Chert 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 Chert.