Bylsa Drilling’s Future Explorations
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Macario Rocha, Geology Manager at Bylsa Drilling, during Mexico Mining Forum 2022, shared insights over the Sonora Gold Project which include epithermal and metasomatic deposits with magmatic influence of great geological economic mining potential.
The project is financed by Benjamin Hill Mining located in the Gold Belt of Caborca where millions of oz. of gold have been extracted. Mine operations in the region include La Herradura, Noche Buena, El Chanate, San Francisco (which is currently stopped), Cerro Colorado in the Eastern side as well as Santa Gertrudis, Las Chispas, Mercedes and Santa Elena in the western area.
"Within the Sonora Gold area there are SKARN outcrops with massive iron enrichment and gold and copper anomalies. There is also evidence of hydrothermalism,” said Rocha while explaining the findings of Au and Cu in the area. Findings also included orogenic quartz of irregular bodies distributed along the property and a hive of bimodal damns. There are also stockworks of type “D” (Py+Ser+Qtz) streaks. The morphology of Sierra Caracahui has a longitude of 10 km N-S and a width of 7 km with an unevenness of up to 500 m.
The Sonora Gold property includes 6,400 hectares where historically gold, silver and copper have been extracted through various mining projects throughout its history since 1930. It is only 150 km North of Hermosillo, Sonora and 140 km South of Tucson, Arizona. Of the 10 previous mining operations on sight, four have been accessed. These include three tunnels: Sonora Copper, Cascabel and Guadalupe. From a regional point of view, the main part of the area is covered by a plutonic complex. There are systems of streaks along the eastern and western sides.
In Caracahui, the plutonic complex is deformed but it still has superficies. It has a great quantity of dams along the main plutonic system. Meaning there are two main events and the last has to be related to the epidermal mining type present. The damns are suspected to be connected to a fertile pluton in the area.
In the structural environment, there are three systems of failures that converge the area, which have played an important role in the amplification of damns and mineralization. There is also a set of bimodal damns along the failures and fractures with a N-S direction. The mineralized structures stationed are from N-S and NE-SW systems, which are forked by a N-S system.
There was a geo-tectonic evolution opening which caused a model of relay ramps that at some point created orogenic quartz bodies which through fractures became hydrothermally mineralized in these zones and in the surface, there was a supergene alteration.
A geochemical sediment exercise found new targets for exploration based on five factors of chemical correlation between key elements of hydrothermal enrichment and a source of magmatic mineralization. These areas include six anomalies for Au+Mo+As, four for Au+Cu+Mo+, 2 for Au+Cu+As and one for Au+Mo+As. Seven prospective areas have been selected for exploration. These include La Berrenda, Caracahui, El Fierro, La Salada, Sonora Copper, La Falsa and San Felix.