New Geological Anomalies Revealed At Madison Copper-Gold Project

VANCOUVER – American Pacific Mining Corp. announced a new geological observation from ongoing exploration work at its Madison Copper-Gold Project in Montana resulting in the successful application of a “fugitive calcite” black-light technique in newly revealed underground workings, which has contributed to an increased understanding of the mineralizing system at Madison. Recent fieldwork has taken advantage of a short seasonal window of greater underground access made possible by lower water levels revealing an additional 150 feet of newly exposed ramp access.
American Pacific’s geological team has successfully deployed ultraviolet (black-light) scanning to search for “fugitive calcite”. Under black light, certain calcite populations fluoresce, providing a powerful discriminator within a sea of visually similar non-fluorescent veins. At Madison, this work has already identified at least one distinct population of fluorescing veins among numerous non-glowing vein sets. When these veins are plotted on stereonets, they offer an additional layer of structural information that can further refine vectors toward both porphyry and carbonite replacement deposit (CRD) targets. This supports the working hypothesis that Madison may host a cluster of porphyries—multiple sources rather than a single “textbook” center—and provides a new toolset to help unravel this unique mineralizing system.
Managing Director of Exploration, Eric Saderholm, said, “The fluorescence in the calcite indicates the presence of trace amounts of manganese and lead, both of which are indicators of carbonate replacement that can be associated with skarn, CRD and the presence of distal porphyry mineralization. Fugitive calcite represents “exhaust” proximal to where sulfide mineralization has formed containing stronger metal concentrations. It is a simple and inexpensive, yet highly effective tool for this type of mineral exploration.”