Advanced petrophysics. Solutions / Передовая петрофизика. Решения

The solution to this problem depends on your background in geology, chemistry, physics, and your familiarity with various laboratory instruments. Here are some possibilities Cut a fresh piece of each sample. Drop cold HCL on the freshly cut surface and observe. The limestone (Core A) will react vigorously with the cold HCL, releasing CO2 in the process. The sandstone (Core B) and dolomite (Core C) will not react with the cold acid. This simple test identifies the limestone conclusively.

Next, heat the HCL almost to its boiling point and repeat the test with the hot HCL on the two remaining samples (Cores B and C). The dolomite will react with the hot acid but the sandstone will not. This test distinguishes the dolomite from the sandstone. <...>