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Coal petrography

R. Falcon,     University of Witwatersrand, South Africa

Abstract:

This chapter describes the basics of petrographic analysis including lithology, the classification of macerals, minerals and their associated rocks, the concept of rank, and the impact that these factors have on the technological properties of coal. The development of modern techniques towards grain analysis and mineral and maceral transitions is briefly described.

Key words

coal

coal petrography

constituents of coal

macerals

minerals

rank

bituminous coal

anthracite

coal utilization

modern coal petrographic techniques

3.1 Introduction

Coal is defined in the Oxford Dictionary as ‘a combustible black or dark brown rock consisting chiefly of carbonised ...

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