Properties of Chalk and Obsidian

Chalk

Obsidian

Properties of Obsidian and Chalk

Properties

Physical Properties

Hardness

5-5.5

Grain Size

Very fine-grained

Not Applicable

Fracture

Not Available

Conchoidal

Streak

White

Porosity

Highly Porous

Very Less Porous

Luster

Dull

Vitreous

Compressive Strength

Not Available

0.15 N/mm²

Cleavage

Non-Existent

Toughness

Not Available

Specific Gravity

2.3-2.4

2.6-2.7

Transparency

Opaque

Translucent

Density

2.49-2.50 g/cm³

2.6 g/cm³

Thermal Properties

Specific Heat Capacity

0.90 kJ/Kg K

0.92 kJ/Kg K

Resistance

Heat Resistant

Heat Resistant, Impact Resistant

Reserves >>

<< Formation

Chalk vs Obsidian Properties

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