On s’accorde aujourd’hui d’une façon assez générale pour reconnaître que la bauxite ou minerai d’aluminium représente le produit d’altération atmosphérique ultime de roches alumineuses très diverses.
C est donc une matière résiduelle, conservée sur des surfaces continentales, formée dans des régions où les conditions climatiques sont particulièrement favorables et dont le relief est peu accidenté.

The carstic bauxite deposits of the western flange of the Turgai trough are investigated in geological, petrological, mineralogical, and morphological aspects, as well as to the chemical composition. Special attention was paid to the so-called »beans«, inclusions in the cement of the stony bauxites of that region. These beans have an average diameter from 2 to 20 mm, greater ones are rare, and so are varieties smaller than 1 mm. Structurally, they consist of a gray ferrum-alumi-nium core around which a black coating of alumina-ferruginous matter is wrapped.
The inner composition of the beans was examined very carefully in every respect, and on that base some new suggestions about their genesis was put forward.

Energy costs represent a significant component of the total costs of operations for Canada’s mining sector. Directly and indirectly, the energy use in the mining sector is also a significant contributor to Canada’s greenhouse gas emissions. Improving energy efficiency reduces greenhouse gas emissions that contribute to climate changes.

Have you tried to walk across a farmer’s field in Montmorillon in France on a rainy October day? Marcel and Bertrand, his father, tried to do so in the fall of 1881 with fatal consequences. We will return to this terrible true story in the first chapter of this book for explaining how the soil at this place made it happen, continuing throughout the rest of the book by explaining how the dreadful soil, in fact, also has extremely beneficial properties in other contexts, like isolation of very hazardous waste.