Downhole Geophysics Program At The Madison Copper-Gold Project


VANCOUVER - American Pacific Mining Corp reported results from a geophysics program at its Madison Copper-Gold project in Montana conducted by Kennecott Exploration (KEX), a division of the Rio Tinto Group, which show downhole electro-magnetic survey anomalies suggesting untested continuation of high grade copper mineralization. The Madison project is under a joint venture earn-in agreement, whereby Rio Tinto may earn 70% of the project by spending US $30 million. Big Sky Geophysics have recently completed and interpreted a down hole TDEM survey from drill holes MADN0025, MADN0026, MADN0027 and MADN0028 with the intent of mapping down hole sulfide zones associated with skarn mineralization.

The best response of the survey occurs at station 255 in MADN0028 which shows a strong response indicating continued, untested sulfide mineralization at depth. There is a similar response at the bottom of holes MADN0025 and MADN0026 that furthers the potential for deeper sulfides. There were no significant conductors in drill hole MADN0027. Four models were developed from this survey and prove to be valid and reliable in defining a conductor in a high-grade Au-Cu skarn zone. These conductors are positioned directly in line with the down-dip projection of the Au-Cu skarn mineralization and indicate that this zone continues at depth. These TDEM conductors indicate a potential network of interlocking sulfides located near the Radar Creek intrusive-Madison Limestone contact that are commonly mineralized and offer strong potential to extend mineralization to depth.

“These downhole geophysical results are exciting and point to an intriguing target as the upper two plates line up with existing known mineralization,” said, President, Eric Saderholm. “Two plates intersect outside of the tested area along strike and down-plunge and two other plates intersect close to where we have the bulk of the deeper mineralization. This provides ample evidence that sulfides that have historically been associated with gold and copper persist at depth.”