Mine detail: El Curiol Mine

Previously called ''

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Location

Lat / long:

10.30107, -85.76803

Resource(M)

Primary:	Manganese
Ore:	Braunite, Pyrolusite
Gangue:	Quartz
Orebody form:	REPLACEMENT BODIES, LENSES, RESIDUAL ORE

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Last production ended:	1920

Geology

Host type:	Diorite
Structure:	Steeply Dipping To Nearly Vertical Faults Between Cherty Shale And Diorite; Shear Zones
Tectonic:	Nicoya Ophiolite Complex
Alteration processes:	Silicification, Supergene Enrichment

References

MRDS	CS00069
DEP	10007843
Reference	{Deposit:: SEARS, J. D., 1919, DEPOSITS OF MANGANESE ORE IN COSTA RICA: U.S. GEOL. SURV. BULL. 710-C, P. 70-71.}{Deposit:: WEBBER, B. N., 1942, MANGANESE DEPOSITS OF COSTA RICA, CENTRAL AMERICA: AM. INST. MIN. METALL. PETROL. ENG. TECH. PUB. 1445, P. 6.}{Deposit:: ROBERTS, R. J., 1944, MANGANESE DEPOSITS IN COSTA RICA: U.S. GEOL. SURV. BULL. 935-H, P. 398-399.}{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:: 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.}{Production:: ROBERTS (1944)}
Reporter	Howe, Stephen S., Mosier, Dan