Humic coals are the most abundant and are characterized by their banded structure, consisting of lithotypes such as vitrain, fusain, clarain, and durain, while sapropelic coals are less common, nonbanded, and can be further divided into cannel and boghead coals.
Cât de protejată este România în noul context de securitate europeană aflăm de la expertul în geopolitică Dorin Popescu.
Publicat de Adina Sîrbu, 9 martie 2026, 17:44