- Cordillera Administrative Region
| Singer, D.A., Berger, V.I., Moring, B.C. (2008) Porphyry copper deposits of the world: Database and grade and tonnage models, 2008. Open-File Report 2008-1155 Tarkian, M., & Koopmann, G. (1995). Platinum-group minerals in the Santo Tomas II (Philex) porphyry copper-gold deposit, Luzon Island, Philippines. Mineralium Deposita, 30(1), 39-47. |