Properties of Chalk and Coal

Chalk

Coal

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

11-1.5

1 7

1.1.2 Grain Size

Very fine-grained

Medium to Fine Coarse Grained

1.1.3 Fracture

Not Available

Conchoidal

1.1.4 Streak

White

Black

1.1.5 Porosity

Highly Porous

Less Porous

1.1.6 Luster

Dull

Dull to Vitreous to Submetallic

1.1.7 Compressive Strength

NANA

0.15 450

1.1.8 Cleavage

Non-Existent

1.1.9 Toughness

Not Available

1.1.10 Specific Gravity

2.3-2.41.1-1.4

0 8.4

1.1.11 Transparency

Opaque

1.1.12 Density

2.49-2.50 g/cm³1100-1400 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

0.90 kJ/Kg K1.32 kJ/Kg K

0.14 3.2

1.2.2 Resistance

Heat Resistant

Chalk vs Coal Properties

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