QUANTITATIVE APPROACH OF CARBONATES, CALCITE AND DOLOMITE FROM THE TARFAYA, Z3 AND Z4 OIL SHALE LAYERS BY ACID ATTACK (MOROCCO)

The carbonates of the oil shale calcite CaCO3 and dolomite CaMg(CO3)2 were object this study to determine their percentage inside shales. Work has been carried out in same context (A.Attaoui H.Mokhlis:2022) for Tarfaya layers Z0, Z1 Z2. However, Z3 Z4 present a migration matter: light organic matter is found layer heavy one layer, consumes more acid attack reaction than mass, which why it necessary follow decomposition isothermally, especially at 500°C. Therefore, by combining two reactions choosing well-defined isotherms (500°C, 600°C, 700°C 800°C) we able approach percentages these particular showing phenomenon situ pyrolysis. techniques used are isothermal combustion followed HCl attacks return dosing remaining after attack. objective study, done using Tacussel pH meter, establish table compositions mass dolomite, constituents carbonate (Morocco). Calcite taken as control; was under conditions shale, i.e. an regime,