Electrical Geophysical Integration Reveals Upside at Piuquenes Cu–Au Porphyry Project, San Juan

Pampa Metals Corp.
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VANCOUVER, BC / ACCESSWIRE / September 11, 2024 / Pampa Metals Corp. ("Pampa Metals" or the "Company") (CSE:PM)(FSE:FIR)(OTCQB:PMMCF) is pleased to provide an update on the integration and interpretation of historic data and the property wide upside potential at the Piuquenes Cu-Au Project, San Juan, Argentina.

Key Findings from Electrical Geophysical Data Integration:

  • Key data sets used to-date include a 2016 Offset Pole-Dipole Induced Polarization-Resistivity survey ("IP") and a Natural Source Magneto-Telluric (gDAS24) survey ("MT").

  • Inversion models of this data have been evaluated in 3D, in conjunction with the preliminary 3D geological model currently being finalized.

  • Chargeability data suggests a northeast trend to the Piuquenes system (refer Figures 1 & 4)

  • Piuquenes Central is marked by a prominent annular chargeability anomaly, with the highest chargeability zones peripheral to the currently defined mineralization (refer Figure 4), consistent with a peripheral pyritic zone associated with not yet well defined phyllic alteration.

  • The mineralized zone at Piuquenes Central is also defined by a moderate chargeability zone (refer Figure 4) interpreted to be associated with the low pyrite, high chalcopyrite mineralized core of the system.

  • A similar, although buried, chargeability feature is evident in the 3D inversion models along the north-east Piuquenes Central trend (refer Figure 1). This is considered a highly promising target for a separate mineralized center.

  • The Piuquenes Central area is also defined by a central resistivity high, with the Piuquenes East target displaying a similar scale anomaly (refer Figure 3).

  • The Piuquenes Central porphyry is well defined by the deep looking Magneto-Telluric data as a pipe-like zone of high resistivity extending upward from a large, high-resistivity feature (refer Figure 2):

    • It is tentatively interpreted that the deep resistivity feature could represent an underlying large-scale intrusion and the pipe-like high-resistivity feature the mineralized porphyry complex extending upward from that deep intrusion

    • The currently defined mineralized zone at Piuquenes Central occurs on the margin of the pipe-like resistivity feature; the other margin of the high features and several other similar responses in the 3D inversion model remain untested

  • This clear definition of the Piuquenes Central and Piuquenes East systems by IP, resistivity and MT data implies that electrical geophysics will be an extremely useful first pass targeting tool for additional porphyry centres within the broader Piuquenes tenement package. Outside the Piuquenes Central - Piuquenes East area, most of the tenement package has not been subject to electrical geophysics (refer Figures 3, 4 & 5).

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