Reconnaissance geochemistry of some rocks of the Guanajuato Mineral District, México
Main Article Content
Abstract
Instrumental neutron activation analysis has been used to determine the concenttation of sorne 16 elements (Na, K, Rb, Cs, Ba, Th, Fe, Se, Co, Cr, La, Eu, Zr, Hf, Ta and Sb) in rocks of the Guanajuato Mineral District, Mexico. Analysis of U.S.G.S. standard rocks shows that the method is quite reliable to study the geochemistry of rock formations. These results are discussed in the light of the known geology. and their bearing on the petrogenetic relationships has been pointed out.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
References
BRUNFELT, A. O., and STEINNES, E., 1969. Instrumental activation analysis of silicate rocks with epithermal neutrons; Anal. Chim. Acta, 48 : 13-24. DOI: https://doi.org/10.1016/S0003-2670(01)85237-5
COBB, J. C., 1967. Determination of lanthanide distribution in rocks by neutron activation and direct gamma counting. Anal. Chem., 39 : 127-131. DOI: https://doi.org/10.1021/ac60245a022
CRNNR, 1963. Distrito Minero de Guanajuato, México. Plano fotogeológico. Publicación 8 E.
DALY, R. A., 1933. Igneous Rocks and the Depth of the Earth, 598 pp., Mc Graw Hill, New York.
ECHEGOYEN, S. J., ROMERO, M. S., and VELAZQUEZ, S. S., 1970. Geología y Yacimientos Minerales de la Parte Central del Distrito Minero de Guanajuato, CRNNR, Boletín 75 : 36 pp.
FISCHER, K. and PUCHELT, H., 1972. Barium .in Handbook o[ Geochemistry Vol. II-3, (Ed. K. R Wedepohl) Springer-Verlag Berlin, Heidelberg. DOI: https://doi.org/10.1007/978-3-642-65039-0_22
FLANAGAN, F. J., 1969. U. S. Geological Survey standards II. First compilation of data for the new U.S.G.S. rocks. Geochim. Cosmochim. Acta, 33 : 81-120. DOI: https://doi.org/10.1016/0016-7037(69)90094-5
FLANAGAN, F. J., 1972. Values for International Geochemical Reference Samples. Geochim. Cosmochim. Acta, 37 : 1189-1200. DOI: https://doi.org/10.1016/0016-7037(73)90055-0
FLEISCHER, M., 1965. Summary of new data on rock samples G-1 and W-1, 1962-1965. Geochim. Cosmochim. Acta, 29 : 1263-1283. DOI: https://doi.org/10.1016/0016-7037(65)90005-0
FRONDEL, C., 1970. Scandium in Handbook of Geochemistry Vol. II-2, (Ed. K. H. Wedepohl) Spinger-Verlag Berlín, Heidelberg.
FRYCKLUND, V. C. and FLEISCHER, M., 1963. The abundance of scandium in volcanic rocks. A preliminary estimate. Geochim. Cosmochim, Acta, 27 : 643-664. DOI: https://doi.org/10.1016/0016-7037(63)90017-6
GEYNE, A. R., FRIES, C., Jr., SEGERSTROM, K., BLACK, R. F., WILSON, I. F., and PROBERT, A., 1963. Geología y yacimiento de minerales del distrito de Pachuca-Real del Monte, Estado de Hidalgo, México, CRNNR, Publicación 5 E; 222 pp.
GORDON, G. E., RANDLE, K., GOLES, G. G., CORLISS, J. B., BEESON, M. H., and OXLEY, S. S., 1968. Instrumental activation analysis of standard rocks with high-resolution γ-ray detectors. Geochim. Cosmochim. Acta, 32 : 369-396. DOI: https://doi.org/10.1016/0016-7037(68)90074-4
GUIZA; R., Jr. RENDON, F. C, and BALTIERRA, J. J. B., 1949. Estudio Geológico del Distrito Minero de Guanajuato, Gto. (Zona de la. Veta Madre). Instituto Nacional para la Investigación de Recursos Minerales, Boletín Núm. 22 : 75 pp.
HEIER, K. S. and ADAMS, J. A. S., 1964. The geochemistry of the alkali metals in Physics and Chemistry of the Earth, Vol. 5 (Ed. L. H. Ahrens, F. Press, S. K. Runcorn and H. C. Urey) : 253-361, Pergamon Press. DOI: https://doi.org/10.1016/S0079-1946(64)80007-0
HEIER, K. S. and BILLIGGS, G. K., 1970a. Sodium in Handbook of Geochemistry Vol. II-2, (Ed. K. H. Wedepohl) Springer-Verlag Berlin. Heidelberg.
HEIER, K. S. and BILLINGS, G. K., 1970b. Cesium in Handbook of Geochemistry Vol. II-3, (Ed. K. H. Wedepohl) Springer-Verlag Berlin; Heidelberg.
HEIER, K. S. and ROGERS, J. J. W., 1963. Radiometric determination of thorium, uranium and potassium, in basalts and in two magmatic differentiation series. Geochim. Cosmochim. Acta, 27 : 137-154. DOI: https://doi.org/10.1016/0016-7037(63)90055-3
HERTOGEN, J. and GIJBELS, S., 1971: Instrumental neutron activation analysis of rocks with a low-energy photon detector. Anal. Chim. Acta, 56 : 61-82: DOI: https://doi.org/10.1016/S0003-2670(01)80110-0
HORSTMAN, E. L., 1957. The distribution of lithium, rubidium, and cesium in igneous and sedimentary rocks. Geochim. Cosmochim. Acta, 12 : 1-28. DOI: https://doi.org/10.1016/0016-7037(57)90014-5
INOUYE, T., HARPER, T., and RASMUSSEN, N. C., 1969. Application of fourier transforms to the analysis of spectral data. Nucl. Instr. and Meth, 67 : 125-132. DOI: https://doi.org/10.1016/0029-554X(69)90551-5
MALDONADO, K. M .. (Ed.), 1956a. Geología lo largo de la carretera entre México, D. F., Pachuca y Zimapán Hgo. Distritos Mineros de Pachuca-Real del Monte de Zimapán, Hidalgo Cong. Geol. Int. Excursiones A-3 y C-1 : 72 .pp.
MALDONADO, K. M. (Ed.), 1956b. Estratigrafía del Cenozoico y del Mesozoico a lo largo de la carretera entre Reynosa., Tamps. y México, D. F. Tectónica de la Sierra Madre Occidental. Vulcanismo en el Valle de México. Cong. Geol. lnt. Excursiones A-14 y C-6 : 323 pp.
NOCKOLDS, S. R., 1954. Average chemical composition of some igneous rocks. Geol. Soc. Am. Bull., 65 : 1007-1032. DOI: https://doi.org/10.1130/0016-7606(1954)65[1007:ACCOSI]2.0.CO;2
NORMAN, J. C. and HASKIN, L.A., 1968. The. Geochemistry of Sc: A comparison to the rare earths and Fe. Geochim. Cosmochim. Acta, 32 : 93-108. DOI: https://doi.org/10.1016/0016-7037(68)90089-6
ONISHI, H., 1969. Antimony in Handbook of Geochemistry Vol. II-1, (Ed. K. H. Wedepohl) Springer-Verlag Berlin, Heidelberg.
PLILER, R. and ADAMS, J, A. S., 1962. The distribution of thorium, uranium, potasium in the Mancos shale. Geochim. Cosmochim. Acta, 26, 1115-1135. DOI: https://doi.org/10.1016/0016-7037(62)90048-0
PRUSSIN, S. G., HARRIS, J. A., and HOLLANDER, J. M., 1965. Application of lithium-drifted germanium gamma ray detectors to neutron activation analysis; Anal. Chem. 37 : 1127-1132. DOI: https://doi.org/10.1021/ac60228a015
ROGERS, J. J. W. and ADAMS, J. A. S., 1969. Uranium in Handbook of Geo-chemistry, Vol. II-1, (Ed. K. Wtdepohl) Springer-Verlag Berlín, Heidelberg.
SCHROEDER, G. L., KRANSER, H. W., EVANS, R. D., and BRYDGES, T., 1966. Lithium-drifted germanium detectors: Applications to neutron-activation analysis. Science, 151 : 815-817. DOI: https://doi.org/10.1126/science.151.3712.815
SHAW, D. M., 1968. A review of K-Rb fractionation trends by covarience analysis. Geochim. Cosmochim. Acta, 12 : 1-28.
TAYLOR, S. R., 1965. The application of trace element data to problems in Petrology in Physics and Chemistry of the Earth. Vol. 6 (Ed. L. H. Ahrens, F. Press, S. K. Runcon, and H. C. Urey) : 133-213, Pergamon Press. DOI: https://doi.org/10.1016/B978-0-08-010426-3.50004-6
TUREKIAN, K. K. and WEDEPOHL, K. H., 1961. Distribution of the elements in some major units of the earth's crust. Geol. Soc. Am. Bull., 72 : 175-192. DOI: https://doi.org/10.1130/0016-7606(1961)72[175:DOTEIS]2.0.CO;2