摘要
On the basis of the study on the occurrence and distribution of sulfur in the Late Permiau high-sulrur coals of Sichuan .Southwest China,the paper discusses the geological ractors influencing sulfur occurrence in coals, and suggests two evolutionary motlels, i. e. a directly depositional pyrite series(euhedral crystal→aggregate→glomerocryst ) and complex genetic series (mini→granular, framboid→spherical→nodular,lumpy pyrite). They are of theoretically and actually important significance not only in the explanation to the difference in composition of varioas types of coal pyrites,but also in the understanding of the mechanism of physical properties (magnetic,surface property) of pyrites. By a comprehansive analysis,a genetic model of sulfur in the Late Permian coal of Sichuan has been established.
On the basis of the study on the occurrence and distribution of sulfur in the Late Permiau high-sulrur coals of Sichuan .Southwest China,the paper discusses the geological ractors influencing sulfur occurrence in coals, and suggests two evolutionary motlels, i. e. a directly depositional pyrite series(euhedral crystal→aggregate→glomerocryst ) and complex genetic series (mini→granular, framboid→spherical→nodular,lumpy pyrite). They are of theoretically and actually important significance not only in the explanation to the difference in composition of varioas types of coal pyrites,but also in the understanding of the mechanism of physical properties (magnetic,surface property) of pyrites. By a comprehansive analysis,a genetic model of sulfur in the Late Permian coal of Sichuan has been established.
