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2 results on '"Fortes B"'

1. DETERMINATION OF RARE EARTH ELEMENTS IN SEA SEDIMENTS FROM THE CUBAN NORTHWESTERN COAST BY INSTRUMENTAL NEUTRON ACTIVATION ANALYSIS.

Author

Rodríuez, G. Capote, Fortes, B. Peña, Rizo, O. Díaz, Zayas, G. Pérez, and Rivero, A. T. Hernández

Subjects
*MARINE sediments, *NUCLEAR activation analysis, *COASTAL sediments, *RARE earth metals, *COASTS
Abstract

The multielemental characterization of sea sediments from an important Cuban coast was performed using instrumental neutron activation analysis. The obtained results show an impoverishment of rare earth elements in the studied zone, in comparison with the data taken from other Cuban coaster zones. [ABSTRACT FROM AUTHOR]

Published
1999

2. Análisis comparativo de la relación alumofosfatos uranio en manifestaciones radiactivas del noroeste de Pinar del Río.

Author

Peña Fortes, B., Llanes Castro, I., Cabrera Díaz, I., and Dreke La O, L.

Subjects
*URANIUM, *PHOSPHATES, *RADIOACTIVITY, *URANIUM ores, *SPECTRUM analysis, *ANALYTICAL chemistry, *MINERALOGY
Abstract

This work makes a comparative analysis of certain areas in the northwest part of Pinar del Río: Hierro-Mantua, Cayo Largo and Centro Escolar. The mineralogical study was made taking into acount the type of ores and lithologies. Different analytical methods were applied (optical mineralogy, X-ray difraction, chemical of macrocomponents, gamma spectrometric and spectral emision analysis. Minerals from Crandallite group are present in the three areas. The presence of uranium in those was demonstrated through the flourescence test, the analysis of electronic microscopy and self radiography. From the results obtained, comparative criteria with other areas can be established, either of the national territory or other countries. [ABSTRACT FROM AUTHOR]

Published
1993

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