Properties of Porphyry and Coal

Porphyry

Coal

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

6-71-1.5

1 7

1.1.2 Grain Size

Fine Grained

Medium to Fine Coarse Grained

1.1.3 Fracture

Irregular

Conchoidal

1.1.4 Streak

White

Black

1.1.5 Porosity

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

Imperfect

Non-Existent

1.1.9 Toughness

1.7

Not Available

1.1.10 Specific Gravity

2.5-41.1-1.4

0 8.4

1.1.11 Transparency

Translucent to Opaque

Opaque

1.1.12 Density

2.5-2.52 g/cm³1100-1400 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

NA1.32 kJ/Kg K

0.14 3.2

1.2.2 Resistance

Heat Resistant, Impact Resistant

Heat Resistant

Porphyry vs Coal Properties

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