Mine detail: La Mina, Rio Blanca

Previously called 'Spanish Adit'

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Location

Lat / long: 18.26177, -65.80945

Resource(M)

Tertiary: Iron, Gold, Silver, Copper
Ore: Chalcopyrite, Pyrite
Gangue: Diopside, Garnet, Quartz, Wollastonite
Orebody form: TABULAR
Other material: Pyrrhotite
Discovery year: 1958

Production

Operation type: Unknown
Production size: None
Development status: Occurrence

Geology

Host rock:Tabonuco Formation
Host type:Carbonate
Associated type:Diorite
Structure:Granodiorite Intruded Along A North-East Trending Anticlinal Axis, Northwest Trending Regional Faults
Alteration processes:Mainly Silicification In Tuffs;Limestones Of Garnet,Clinozoisite,Wollastonite

References

MRDSW701050
DEP10085459
Reference{Deposit:: 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.}{Deposit:: BERGEY, W.R.,1960, REPORT ON LA MINA PROJECT, CAGUAS COPPER COMPANY, INC., COMMONWEALTH OF PUERTO RICO, AD.FRAZIER PRIVATE REPORT ON FILE WITH THE DEPT. OF NATURAL RESOURCES, PUERTO RICO.}{Deposit:: BERGEY, W.R.,1958, REPORT ON THE MINERAL DEPOSITS OF LUQUILLO AREA, CAGUAS CONCESSION, PUERTO RICO; A PRIVATE REPORT AT THE DEPT. OF NATURAL RESOURCES, SAN JUAN, PUERTO RICO.}{Deposit:: CRAGO, WILLIAM H.,1945, REPORT ON IRON ORE DEPOSITS IN PUERTO RICO FOR PUERTO RICO DEVELOPMENT CO.; DEPT. OF NATURAL RESOURCES, PUERTO RICO.}{Deposit:: PEASE, M. H., JR., 1966, SOME CHARACTERISTICS OF COPPER MINERALIZATION IN PUERTO RICO, IN CARIBBEAN GEOL. CONF., 3D, KINGSTON, JAMAICA, 1962, TRANS.: JAMAICA GEOLOGICAL SURVEY PUB. 95, P. 107-112.}{Deposit:: MEYERHOFF, H. A., 1931, THE GEOLOGY OF THE FAJARDO DISTRICT, PORTO RICO: NEW YORK ACAD. SCI., SCI. SURVEY OF PORTO RICO AND THE VIRGIN ISLANDS, V. 2, PT. 3, P. 201-360.}{Deposit:: COX, D. P., MARVIN, R. F., *ONIGLE, J. W., MCINTYRE, D. H., AND ROGERS, C. L., 1977, POTASSIUM-ARGON GEOCHRONOLGY OF SOME METAMORPHIC, IGNEOUS, AND HYDROTHERMAL EVENTS IN PUERTO RICO AND THE VIRGIN ISLANDS: U.S. GEOLOGICAL SURVEY JOUR. RESEARCH, VOL. 5, NO. 6, P. 689-703.}
ReporterPaidakovich, Matthew E.