Commodities
PrimaryManganese
Commodity typeM
Deposit
Deposit typeVein
Model97: Volcanogenic Mn
Deposit sizeS
Ore controlProspect Located About At Contact Of A Tuff With An Underlying Lava
Materials
Ore mineralsPsilomelane, Rhodonite
GangueCalcite, Epidote, Quartz
Geology
Host rockVolcanic Rock (Aphanitic),Tuff
Associated rockVolcanic Rock (Aphanitic),Tuff · Lago Garzas Formation
AlterationBoth Tuff And Lava Are Deeply Weathered
Economic & production
Development statusPast Producer
Identification
Deposit ID10100553
MRDS IDW701085
RegionCR
Data scoreB
Coordinates18.13095, -66.73391
References
COX, DENNIS P., AND BRIGGS, REGINALD P., 1973, METALLOGENIC MAP OF PUERTO RICO: U.S. GEOLOGICAL SURVEY, MISCELLANEOUS GEOLOGIC INVESTIGATIONS MAP I-721, ACCOMPANIED BY EXPLANATORY PAMPHLET, 6 P.PUERTO RICO BUREAU OF MINES, 1941, REPORT OF THE BUREAU OF MINES ON THE MINERAL RESOURCES OF PUERTO RICO, AN APPENDIX TO THE ANNUAL REPORT OF THE BUREAU OF MINES FOR THE FISCAL YEARS 1939-1941: SAN JUAN, BUR. SUPPLIES, PRINTING, AND TRANSPORTATION, P. 20-21.MATTSON, P. H., 1968, GEOLOGIC MAP OF THE ADJUNTAS QUADRANGLE, PUERTO RICO: U. S. GEOLOGICAL SURVEY MISC. GEOL. INV. MAP I-519.PUERTO RICO BUREAU OF MINES, 1941.