Mine detail: El Espavelar Mine

Previously called 'Lagarto Area'

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Location: Guanacaste, Costa Rica, North America
Lat / long: 10.13441, -85.74163
dep_id: 10101367
mrds_id: CS00081
Commodity type: metallic
Major mineral: Manganese
Operation type: Unknown
Production size: Small ammount of material produced
Development status: Past Producer
ore: Braunite, Pyrolusite
orebody_fm: REPLACEMENT BODIES AND SMALL, IRREGULAR POCKETS
model: 97: Volcanogenic Mn
alteration: Silicification
Reporter: Howe, Stephen S., Mosier, Dan
hrock_type: Diorite
Structure: Nw- And W-Trending Fractures
tectonic: Nicoya Ophiolite Complex
References:
  • Deposit:: SEARS, J. D., 1919, DEPOSITS OF MANGANESE ORE IN COSTA RICA: U.S. GEOL. SURV. BULL. 710-C, P. 71-72.
  • Deposit:: ROBERTS, R. J., 1944, MANGANESE DEPOSITS IN COSTA RICA: U.S. GEOL. SURV. BULL. 935-H, P. 402-403.
  • 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:: SEARS (1919), ROBERTS (1944)
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