MINERÍA la mejor puerta de acceso al sector minero EDICIÓN 572 / MAYO 2025 53 Pyrophyllite develops in silt- and clay- rich rocks; therefore, in siliciclastic terrains, it should not be used as a vector toward the porphyry environment. The development of quartz veining (D veins) in siliciclastic rocks displays a very faint and thin halo of white mica and abundant FeOx box works. According to our understanding, HS mineralization in siliciclastic rocks almost always require a magmatic component, such as subvolcanic intrusions, domes, and phreatomagmatic events, as these generate fracturing in siliciclastic rocks and enhance permeability for hydrothermal fluids. In northern Peru, where there is over ~45,500 Km2 Lower Cretaceous siliciclastic rock, the potential for discovering new deposits is quite high. Other siliciclastic districts worldwide should also be explored even if satellite images do not show color anomalies. Acknowledgments We appreciate Mochica Resources and the geological team, Katharina Pfaff, Moises Mera, and Kelsey Livingston for financial and technical support. Bibliography Calder, M., Chang, Z., Arribas, A., Hedenquist, J., Gaibor, A., and Dunkley, P. 2018. Porphyry-style alteration and vein types of the Far Southeast porphyry Cu-Au deposit, Mankanyan district, Philippines: Society of Economic Geologists. Cerpa, L.M., Bissig, T., Kyser, K., McEwan, C., Macassi, A., and Rios, H.W. 2013. Lithologic controls on mineralization at the Lagunas Norte high-sulfidation epithermal gold deposit, northern Peru: Mineralium Deposita, v. 48, no. 5, p. 653–673. Chang, Z., Hedenquist, J.W., White, N.C., Cooke, D.R., Roach, M., Deyell, C.L., Garcia, J., Gemmell, J.B., Mcknight, S., and Cuison, A.L. 2011. Exploration Tools for Linked Porphyry and Epithermal Deposits: Example from the Mankayan Intrusion-Centered CuAu District, Luzon, Philippines: Economic Geology; 106 (8): 1365–1398. Chen, J., Cooke, D.R., Piquer, J., Selley, D., Zhang, L., and White, N.C. 2019. Alteration, mineralization, and structural geology of the Zijinshan high-sulfidation Au-Cu deposit, Fujian province, southeast China: Economic Geology, v. 114, no. 4, p. 639–666. Chouinard, A., Williams-Jones, A.E., Leonardson, R.W., Hodgson, C.J., Silva, P., Tellez, C., Vega, J., and Rojas, F. 2005. Geology and Genesis of the Multistage High-Sulfidation Epithermal Pascua Au-Ag-Cu Deposit, Chile and Argentina: Economic Geology, v. 100, no. 3, p. 463–490. Hedenquist, J.W., and Arribas, A. 2022. Exploration Implications of Multiple Formation Environments of Advanced Argillic Minerals: Economic Geology, v. 117, no. 3, p. 609–643. Kesler, S.E., Campbell, I.H., Smith, C.N., Hall, C.M., and Allen, C.M. 2005. Age of the Pueblo Viejo Gold-Silver Deposit and Its Significance to Models for High-Sulfidation Epithermal Mineralization: Economic Geology, v. 100, no. 2, p. 253–272. Megard, F. 1984. The Andean orogenic period and its major structures in central and northern Peru, accessed at Journal Geological Society London. Pilco, R., and McCann, S. 2021. Gold Deposits of the Yanacocha District, Cajamarca, Peru, in Geology of the World’s Major Gold Deposits and Provinces: Society of Economic Geologists, p. 451–465. Santos, A., Guo, W., Chen, N., Cerpa, L., and Kojima, S. 2023. Geochronologically constrained life cycles of telescoped porphyry- epithermal systems at the La Arena district, Northern Peru: Ore Geology Reviews, v. 155, p. 105-3. Vaughan, J., Nelson, C.E., Garrido, G., Polanco, J., Garcia, V., and Macassi, A. 2021. The Pueblo Viejo Au-Ag-Cu- (Zn) Deposit, Dominican Republic, in Geology of the World’s Major Gold Deposits and Provinces: Society of Economic Geologists, p. 415–430.
RkJQdWJsaXNoZXIy MTM0Mzk2