INGEOSUR   20376
INSTITUTO GEOLOGICO DEL SUR
Unidad Ejecutora - UE
artículos
Título:
Presence of amphibole in vermiculite mined in Argentina. Morphology, quantitative and chemical studies on the different phases of production
Autor/es:
LESCANO, L; MARFIL SILVINA; MAIZA PEDRO; J. SFRAGULLA; A. BONALUMI
Revista:
ENVIRONMENTAL GEOLOGY
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2013 vol. 70 p. 1809 - 1821
ISSN:
0943-0105
Resumen:
Vermiculites with impurities of amphibole, a
dry fine residue and calcined materials from three deposits
in the province of Co´rdoba, Argentina, were studied. From
a commercial perspective, amphiboles are considered as
??asbestos??, a group of silicate minerals with strong and
flexible fibres that are heat resistant and chemically inert,
and thus well suited for heat insulation. These fibrous
particles have provoked controversies about the toxicity
impact on human health and the development of diseases
such as mesothelioma, asbestosis or lung cancer. Their
commercialization and exploitation are currently prohibited.
The sampled minerals were identified with a petrographic
microscope, chemical analyses, SEM and XRD. It
was concluded that amphibole minerals are present in all
the deposits studied and in every phase of plant production,
but not all of them have asbestiform characteristics.