Properties of Obsidian and Lignite

Obsidian

Lignite

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

5-5.51

1 7

1.1.2 Grain Size

Not Applicable

Medium to Fine Coarse Grained

1.1.3 Fracture

Conchoidal

1.1.4 Streak

White

Black

1.1.5 Porosity

Very Less Porous

Highly Porous

1.1.6 Luster

Vitreous

Dull to Vitreous to Submetallic

1.1.7 Compressive Strength

0.15 N/mm²NA

0.15 450

1.1.8 Cleavage

Non-Existent

1.1.9 Toughness

Not Available

1.1.10 Specific Gravity

2.6-2.71.1-1.4

0 8.4

1.1.11 Transparency

Translucent

Opaque

1.1.12 Density

2.6 g/cm³800-801 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

0.92 kJ/Kg K1.26 kJ/Kg K

0.14 3.2

1.2.2 Resistance

Heat Resistant, Impact Resistant

Heat Resistant

Obsidian vs Lignite Properties

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