Mine detail: El Frances Mine

Previously called ''

<< Back to the map

Location

Lat / long: 10.4955, -85.70413

Resource(M)

Primary: Manganese
Ore: Braunite, Psilomelane, Pyrolusite, Wad
Orebody form: LENTICULAR TO IRREGULAR

Production

Operation type: Unknown
Production size: Small
Development status: Past Producer

Geology

Host type:Shale
Associated type:Basalt
Tectonic:Nicoya Ophiolite Complex
Alteration processes:Silicification

References

MRDSCS00021
DEP10097769
Reference{Deposit:: SEARS, J. D., 1919, DEPOSITS OF MANGANESE ORE IN COSTA RICA: U.S. GEOL. SURV. BULL. 710-C, P. 78.}{Deposit:: ROBERTS, R. J., 1944, MANGANESE DEPOSITS IN COSTA RICA: U.S. GEOL. SURV. BULL. 935-H, P. 408-410.}{Deposit:: 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.}{Deposit:: 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. 151, 153.}{Deposit:: 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.}
ReporterHowe, Stephen S., Mosier, Dan