The tunnel was displaced inside a massive pegmatite, which runs through the rock shale. We can observe that the tunnel was displaced based on explosives and pointers.
When doing a test with a blunt pick, we can clearly see the hardness of the material.
Feldspar is abundant, and the formation of bulky blocks of muscovite.
As they did not cross the pegmatite mass, it is impossible to determine its size, as well as its exact trajectory.
It is also noticeable that the line twists a lot between the rocky schist, making it difficult to read.
However, we know that the pegmatite mass is part of the intrusive rocks, where the minerals came from the great depths of the earth through the magma, filling cavities and ruptures in the subsoil, a path that is also made by the groundwater. So we can conclude that at some point this line containing the pegmatite mass will decline to the left, following the flow of water from the mine.
When carefully examining the material, curiously, we can notice the absence of some indicatives, such as: black tourmaline captive, aquamarine slag (beryl), soap, and garnets..., these that are common, in places where there is incidence for the production of gems from aquamarine.
It is also possible to verify that the excavation did not reach the quartz core, which by many miners is called a sulky box. Therefore, there is a probability of producing gems, in the order of 50%.
Inside the tunnel mines water on the roof and sides, suggesting that further into the mountain, there is an enormous force of quartz. Where production can take place, whether of aquamarine gemstones or just faceted quartz pieces.
