Commodities
PrimaryGold
SecondarySilver
Commodity typeM
Deposit
Model151: Epithermal vein, Sado
Deposit sizeN
Orebody formVEIN
Ore controlChanges In Strike Of The Faults Apparently Had Little Or No Effect On Where Quartz Was Deposited, But The Veins Are Widest In The Steepest Parts Of Their Host Fissures. The Distribution Of Gold Within The Quartz Shows An Even Weaker Relationship To Structure.
Materials
Ore mineralsElectrum
GangueCalcite, Chalcopyrite, Pyrite, Quartz, Sphalerite
Geology
Host rockAndesite · Monteverde;Monteverde
Associated rockRhyolite · Monteverde;Monteverde;Monteverde
StructureN- And Ne-Trending Faults
AlterationReplacement And Veining Of Andesite By Calcite And Epidote; Phenocrysts Replaced By Sericite; Chlorite In Groundmass. Pervasive Silicification.
Economic & production
Development statusOccurrence
First production1910
Identification
Deposit ID10007887
MRDS IDCS00121
Alternate namesEl Libano De Tilaran Mine, Esperanza De Libano MineLibano Mine
RegionNA
Data scoreB
Coordinates10.41773, -84.98606
References
BENNETT, EVAN, 1939, GOLD MINING IN COSTA RICA: ENG. MIN. J., V. 140, NO. 1, P. 56-58.WILLIAM BENNETT, OWNER, ORAL COMMUNICATION, 1986.ORGANIZACION DE LOS ESTADOS AMERICANOS, 1978, DIAGNOSTICO DEL SECTOR MINERO: SAN JOSE, ORGANIZACION DE LOS ESTADOS AMERICANOS, 91 P.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.