*6.2.3 Rock waypoints*

Waypoints are also concerning rocks recorded on the field. Some are sampled and the others are just marked and observed. Those rocks information will help for the enrichment of the geological map (**Figure 16**). Although the information related to rocks are not assessed with the same importance as the stream sediments, they are also with great information and used later to link geochemical anomalies and the surrounding rocks formation. Since we know that the geochemical signature of the stream sampled bear the information of the rock where the sediments sampled are coming from. At this point, the tracking is used to assess if the geologist effectively reach the rock observed or sampled. Those waypoints are also extracted in gpx format and stored in Basecamp and inside the database.

#### **Figure 16.**

*Tracking and waypoints showing sampled and observed rocks (triangles = observed granites).*

**Figure 17.** *Valid and invalid data after investigation.*
