Paragenesis and zonation of alteration minerals, from root to base of lithocap, of the Far Southeast porphyry copper-gold deposit, Philippines

Abstract

Michael Calder recorded the hydrothermal alteration mineral assemblages to define alteration types at the Far Southeast porphyry copper-gold deposit, Philippines. Spatial extent and timing relations were recorded and two cross-sections through the high-grade zone were constructed. Alteration mineral assemblages were determined by drill core logging, an optical microscopy petrographic study, Short Wavelength Infra-Red (SWIR) spectral analysis, and a Quantitative Evaluation of Materials by Scanning Electron Microscopy (QEMSCAN) study. Timing relations of mineral assemblages determine a cooling of the system. Detailed study of mineral assemblages improve genetic models and industry exploitation efficiency.