A propósito de la alteración de una variedad comercial de una granulita de Brasil en una plaza pública del norte de Marruecos

• Autores: Belén Rubio Armesto
• Localización: Geogaceta, ISSN 0213-683X, Nº. 42, 2007, págs. 71-74
• Idioma: español
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• Resumen

  • The aim of this study is to explain the natural processes that led to the intense alteration observed in a commercial variety of Brazilian granulite named as «Granito Verde Eucalipto» paving a public square in Morroco. The mineralogical and microscopy study showed the occurrence of portlandite and other typical portland-like cements transformation products, such as calcite and aragonite. Subsequently, paragenesis of these carbonates with gypsum promoted quartz dissolution by alcalinolysis, a typical process of arid and semiarid weathering.