Acidic mineral solutions in gold areas can bleach rocks to a lighter color. Changes in color on the floor can be a golden indicator for several reasons. Iron is a type of rock productive for gold in most regions, so large amounts of black (which indicate iron content) or red (which indicates iron oxides) could mean that there is also gold. Acidic hydrothermal fluids from reservoir reservoirs can bleach rocks so that they take on a lighter color.
Changes in soil color are also a sign of contact zones. Miners can look at the general types of rocks that are associated with nearby productive gold mines and then use the presence of these rocks in other areas as possible indicators of gold. As for the relief signs, it means that gold has been buried since the era of the Ottoman Turkish state, and this means that gold is present at depths that do not exist 2 meters away. These color changes can be an indicator of gold because gold is often found in altered rocks or along contacts with rocks.
Drilling marks usually indicate that this gold has been buried since the time of ancient Greek and Roman civilizations, and this means that gold is present at depths of no less than 8 meters underground.