08/06/2026
Not all magnetic anomalies are created equal. Knowing the difference is the whole game.
Our GAM project contains multiple distinct magnetic sources. Some are linked to mineralization, while others are not. Identifying the difference is essential for planning drill holes.
Here's how we approach it:
Start with the rock. Before running any inversion, we collect downhole magnetic susceptibility measurements. This gives us real, measured values from known lithologies, not assumed values from a textbook. Those measurements inform the starting model for the inversion, making the output geologically grounded from the beginning.
Account for remanence. Standard magnetic inversion assumes that all magnetism is induced - that the rock's magnetic response simply reflects the current Earth field. In reality, many rocks carry remanent magnetism: a magnetic signature locked in from a different time and direction. Ignoring this leads to distorted inversions and mislocated source bodies. At Güintar, we use MVI (magnetic vector inversion) which solves both induced and remanent components simultaneously, giving a more realistic picture of what's underground.
Interpret the geology, not just the anomaly. At Güintar, magnetite precipitated during an earlier, more oxidized porphyry event, while later pulses of more reduced magmatism introduced pyrrhotite alteration, both within the porphyry and as a broad alteration halo in the volcaniclastic country rock.
The value isn't in seeing a magnetic high or low. The value is in understanding what the magnetism reflects, whether that be indicative of mineralization, lithology, or something else entirely.
That distinction is made by geology, informed by geophysics, not the other way around.
Read more about GAM, Colombia:
https://www.royalroadminerals.com/projects/g%C3%BCintar-and-margaritas
