Properties of Hornfels and Coal

Hornfels

Coal

Properties of Coal and Hornfels

Properties

Physical Properties

Hardness

2-3

1-1.5

Grain Size

Fine Grained

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

Unknown

Black

Porosity

Highly Porous

Less Porous

Luster

Shiny

Dull to Vitreous to Submetallic

Compressive Strength

5.80 N/mm²

Not Available

Cleavage

Perfect

Non-Existent

Toughness

Not Yet Found

Not Available

Specific Gravity

3.4-3.9

1.1-1.4

Transparency

Opaque

Density

0.25-0.30 g/cm³

1100-1400 g/cm³

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K

1.32 kJ/Kg K

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant

Heat Resistant

Reserves >>

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Hornfels vs Coal Properties

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