1. Almasoud FI, Usman AR, Al-Farraj AS (2015) Heavy metals in the soils of the Arabian Gulf coast affected by industrial activities: analysis and assessment using enrichment factor and multivariate analysis. Arab J Geosci 8:1691–1703
2. Angelelli V (1984) Yacimientos metalíferos de la República Argentina, vol I. CIC, Facultad de Ciencias naturales y Museo de La Plata – UNLP, pp 391
3. April R, Newton R, Coles LT (1986) Chemical weathering in two Adirondack watershed: past and present-day rates. Geol Soc Am Bull 97:1232–1238
4. Aurisicchio C, Fioravanti G, Grubessi O, Zanazzi PF (1988) Reappraisal of the crystal chemistry of beryl. Am Mineraol 73(7–8):826–837
5. Baird RB, Eaton AD, Rice EW (eds) (2017) Standard methods for the examination of water and wastewater. American Public Health Association, American Water Works Association and Water Environment Federation, EE.UU, Washington, DC, p 1796