Rock preparation for microscopic observations
The samples should have an appropriate dimension (letter A - figure 4). Large samples must be cutted with the saw illustrated in figure 1.

Figure 1- Saw for large samples.

Figure 2 - A- Saw ; B - Wear out disc.

Figure 3 - Polishing.
Click over the sample to see a detail.

Figure 4 - All the intermediate phases between a hand specimen and the thin section.