Analytical results and sample locality map of soil samples from the Tanama-Helecho porphyry copper district, Municipios of Utuado and Adjuntas,  Puerto Rico
By: by Robert E. Learned, Herbert A. Pierce, Ileana Pérez.
Contributors: Pierce, H. A. 1951-; Perez de Gonzalez, Ileana.; Geological Survey (U.S.)
Series: Open-file report -- 93-179.; U.S. Geological Survey open-file report -- 93-179.
Publisher: U.S. Dept. of the Interior, Geological Survey; Books and Open-File Reports Section, distributor
Published: 1992
Place of publication: [Menlo Park, Calif.?]; [Denver, Colo
Language: eng
Format: Microform
Number of pages: 34
Subjects: Porphyry -- Puerto Rico.; Soils -- Puerto Rico -- Sampling.
Notes: Chiefly tables.

Distributed to depository libraries in microfiche.

Shipping list no.: 93-1307-M.

Includes bibliographical references (leaf 7).

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1993] 2 microfiches : negative.