Commodities
PrimaryManganese
Commodity typeM
Deposit
Model97: Volcanogenic Mn
Deposit sizeS
Orebody formTHIN ELONGATE TO LENTICULAR, SUBHORIZONTAL BODIES, IRREGULAR POCKETS, RESIDUAL CAPPING
Materials
Ore mineralsBixbyite, Braunite, Hollandite, Pyrolusite, Wad
Geology
Host rockShale
StructureSeveral Faults Cut Orebodies While Others Are Subparallel To Ore Lenses
Tectonic settingNicoya Ophiolite Complex
AlterationSilicification
Economic & production
Development statusPast Producer
Last production1918
Identification
Deposit ID10007817
MRDS IDCS00035
RegionNA
Data scoreB
Coordinates10.38301, -85.84164
References
SEARS, J. D., 1919, DEPOSITS OF MANGANESE ORE IN COSTA RICA: U.S. GEOL. SURV. BULL. 710-C, P. 68-70.ROBERTS, R. J., 1944, MANGANESE DEPOSITS IN COSTA RICA: U.S. GEOL. SURV. BULL. 935-H, P. 392.KUYPERS, E. P., AND DENYER CH., PERCY, 1979, VOLCANIC EXHALATIVE MANGANESE DEPOSITS OF THE NICOYA OPHIOLITE COMPLEX, COSTA RICA: ECON. GEOL., V. 74, P. 672-678.HEIN, J. R., KUIJPERS, E. P., DENYER, PERCY, AND SLINEY, R. E., 1983, PETROLOGY AND GEOCHEMISTRY OF CRETACEOUS AND PALEOGENE CHERTS FROM WESTERN COSTA RICA, IN IIJIMA, A., HEIN, J. R., AND SIEVER, R., EDS., SILICEOUS DEPOSITS IN THE PACIFIC REGION: AMSTERDAM, ELSEVIER SCIENTIFIC PUB. CO., P. 149, 150.U.S. GEOLOGICAL SURVEY, DIRECCION GENERAL DE GEOLOGIA, MINAS E HIDROCARBUROS, UNIVERSIDAD DE COSTA RICA, 1987, MINERAL RESOURCE ASSESSMENT OF THE REPUBLIC OF COSTA RICA: U.S. GEOLOGICAL SURVEY MISCELLANEOUS INVESTIGATION SERIES MAP I-1865, 75 P.SEARS (1919), ROBERTS (1944)