|
Costa Rica | |
| Rocks & Min.: 21:561. |
| Maresch, W. V. (1992): Composition and formation of fossil manganese nodules in Jurassic to Cretaceous radiolarites from the Nicoya Ophiolite Complex (NW Costa Rica). Mineralium Deposita 27, 153-160. Halbach, P. Gursky, H. J. Gursky, M. M. Schmidt-Effing, R. |
| Nelson, C.E. (1990): Bulk mineable epithermal precious metal deposits of the Circum-Carribean region. In: Hausen, D.M., Halbe, D.N., Petersen, E.U., Tafuri, W.J., eds., Gold ’90 – Symposium Proceedings. Society for Mining, Metallurgy, and Exploration, Littleton, Colorado, pages 149-161. |