Is there any illuviation clay in this sample?

According to the images with the crossed nicols (1 and 2), we could conclude there is illuviation clay. However, if we observe the images with polarizer only, we can see that the clay coatings are covering the nodules composed of Fe (likely hematites) instead of the walls of the pores. These clay orientations can be a consecuence of simple preassures due to humidity changes, what is usual in such a clayey horizon.

The coating of images 3, 4, 5, 6, 7 y 9 cover the walls of pores but do not really adapt to the pore's shape, they are not continous and the boundaries are fuzzy. Observing the images with one polarizer only, there is no different between the coating and the sourrounding clay. If it were illuvial clay, the traslocation could have chosen the particles, that is, the smaller clay, cleaner, more transparent and possibly with a different colour (from other horizon) and a clearer boundary (formed "on" the walls od pores not "in" the walls).

The crack of the image 8 shows crossed nicols and a clay coating with clear illuvial features. However, if we pay attention, we realise that is just a piece of the sand grain coating above. Additionally, with polarizer only we can not distiguish the coating clay from the clay of the soil surrounding it.

The clay orientations in image 10 are not limited to the coating of the nodule of Fe, but they are all aroung the soil matrix.

Acording to the previous discussion we think it could possibly be a Bw Horizon.