Mine detail: La Esperanza Mine

Previously called 'Playa Real Mines'

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Location: Guanacaste, Costa Rica, North America
Lat / long: 10.37607, -85.8458
dep_id: 10007819
mrds_id: CS00037
Commodity type: metallic
Major mineral: Manganese
Operation type: Unknown
Production size: Small ammount of material produced
Development status: Past Producer
orebody_fm: TABULAR
model: 97: Volcanogenic Mn
alteration: Silicification
Reporter: Howe, Stephen S., Mosier, Dan
hrock_type: Shale
tectonic: Nicoya Ophiolite Complex
Year first produced: 1918
yr_lst_prd: 1918
References:
  • Deposit:: SEARS, J. D., 1919, DEPOSITS OF MANGANESE ORE IN COSTA RICA: U.S. GEOL. SURV. BULL. 710-C, P. 68.
  • Deposit:: ROBERTS, R. J., 1944, MANGANESE DEPOSITS IN COSTA RICA: U.S. GEOL. SURV. BULL. 935-H, P. 392-393.
  • 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)
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