Quimbaya Gold has completed a drone-based magnetic and radiometric survey on the Tahami Center concession in Colombia and reports derived indications of a significantly larger target area for a potential copper porphyry system. According to Quimbaya Gold (CSE: QIM | OTCQX: QIMGF | FSE: K05), the survey campaign covered approximately 800 hectares and includes those zones where mapping and sampling had already identified surface features that could fit a porphyry model. Based on the new data, the company now defines a prospective surface trend of approximately 3.1 kilometers in length and 1.3 kilometers in width.
The announcement is particularly relevant because it expands the technical basis for a planned initial drill program at the Tahami Center target area: the geophysical anomalies are said to coincide with mapped alteration patterns and anomalous geochemical values for copper, gold, and molybdenum. At the same time, Quimbaya Gold emphasizes that this is a conceptual interpretation model that can only be confirmed through drilling.
Quimbaya Gold: Magnetic Anomalies Indicate Porphyry Intrusions
The core of the evaluation is a 3D model of the so-called Magnetization Vector Intensity (MVI). Quimbaya Gold reports two subvertical zones dipping to the southeast, which the company interprets as possible porphyry intrusions. According to the announcement, these magnetic highs are located where potassic alteration, porphyry-typical veining, and anomalous Cu-Au-Mo geochemistry have been mapped at the surface.
Such correlations are important in the exploration context because high magnetic anomalies in porphyry systems can often be linked to elevated magnetite content. In many porphyry settings, magnetite occurs particularly in areas of potassic alteration—a component used as an indicator of the geological environment in early development stages. However, Quimbaya Gold explicitly classifies this interpretation as preliminary: without diamond drilling, it cannot be confirmed whether the magnetic signatures are actually associated with mineralized intrusions and corresponding alteration zones.
In addition to the magnetic highs, the company also points to an MVI low anomaly on the southeastern flank. According to mapping, an area there has been interpreted as a “lithocap”—an overlying alteration cap that can occur above porphyry systems. In such zones, intense advanced argillic alteration can destroy magnetite, which is reflected in a reduced magnetic response. Quimbaya Gold sees the spatial coincidence of lithocap mapping and magnetic low as an additional element that fits the overall model.
Tahami Center Target Area Grows: 3.1 km Trend and 1.3 km Width
With the drone geophysics, Quimbaya Gold now delineates the extent of the interpreted porphyry-related magnetic anomalies over approximately 3.1 kilometers in a northwest–southeast direction and up to 1.3 kilometers in width. For project development, this means: the target area is recognizable not just as a point, but as a larger, coherent corridor—at least from the perspective of the geophysical signature.
In practice, such a scale can influence the prioritization of future drill approaches, because with large, coherent systems, the question of the best possible “entry points” becomes critical: where are alteration, structure, and geochemistry so superimposed that an initial drill test can be positioned as efficiently as possible? This is precisely the step Quimbaya Gold is now preparing.
The company announces that the drill pad locations for the maiden drilling program will only be determined after completion and integration of additional datasets. These include pending analyses from soil, rock, and stream sediment samples, detailed geological mapping, and an initial 3D model that integrates geology and geophysics. According to the company, this work is expected to be completed within the current month.
Next Steps: Geochemistry, Radiometry, and 3D Model as Drilling Basis
Quimbaya Gold emphasizes in the announcement that the work to date on the Tahami project strengthens the technical thesis: CEO Alexandre P. Boivin refers to a “large, coherent” magnetic system in the subsurface that coincides with the features mapped at the surface. The statement targets an important exploration logic: the better different data types (mapping, geochemistry, geophysics) spatially correlate with each other, the more clearly an initial drill program can be justified—without yet claiming a deposit.
Exploration Manager Ricardo Sierra, who is named as the “Qualified Person,” also addresses the interpretation and refers to geophysical cross-sections and a plan view at approximately -700 meters elevation, in which the correlation between near-surface porphyry-type mineralization and a projected magnetic high should be visible. At the same time, he sets a clear framework: the interpretation is conceptual and must be confirmed through diamond drilling and the integration of the pending radiometric data and geochemical analyses.
For Quimbaya Gold, the current announcement is therefore primarily a technical interim step: the drone geophysics enlarges and refines the Tahami Center target area and provides indications of where an initial drill program could begin. However, whether the magnetic anomalies actually conceal a porphyry copper-gold-molybdenum system with economically relevant mineralization remains—as emphasized by the company itself—a question that only the drill core can answer.
