Réplica al artículo: «Características geoquímicas preliminares de azabaches artesanales del Kimmeridgiense de Asturias» (C.G. Blanco, M. Valenzuela, C. Suárez de Centi, M. Fernández Pello; Geogaceta 20(3): 677-680)

Abstract

The article of C. G. Blanco, M. Valenzuela, C. Suárez de Centi y M. Fernández Pello published in Geogaceta (1996), 20(3): 677-680 contains serious deficiencies and a lack of scientific rigour that undermines the vality of its conclusions. The autors mentioned show a surprising ignorance of the origen, characteristics and fundamental properties of the material used in their work (Spanish jet) failing to cite most of the previous works that have already dealt with this material. As a result, C. G. Blanco eta I give as "original results" previously reported by other authors. Moreover, given the complex and heterogeneous nature and the special composition of Spain jet, the failure to include the basis of the elemental analysis and the confusion in the units in which the data are expressed have led to a very low degree of accurancy in the authors'deductions. Furthermore, the classification of this jet as a relatively immature material is based on false suppositions. Finally, some of the conclusions drawn by C. G. Blanco et at\ clearly contradict widely accepted results without any scientific justification