Kaolinite from Haskovo Province, Bulgaria
Bulgaria | |
| McCoyd, R. J. (1995). Isotopic and geochemical studies of the epithermal-mesothermal Pb-Zn deposits of SE Bulgaria (Doctoral dissertation, University of Aberdeen). |
| 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 |