Cr-Ni-PGE Mineralization and Serpentinization of Peridotites in Beni Bousera Massif (Internal Rif, Morocco)

  • Zaineb HajjarEmail author
  • Fernando Gervilla
  • Amina Wafik
Part of the Advances in Science, Technology & Innovation book series (ASTI)


The Beni Bousera ultramafic massif outcrops at the base of the internal zones of the Alpine Rif belt of northern Morocco. It is characterized with the presence of two types of magmatic ores (i) chromite and Ni arsenides, associated with orthopyroxene and cordierite (Cr-Ni ores), and (ii) Fe-Ni-Cu sulfide mineralization, containing variable amounts of graphite and chromite associated with phlogopite, clinopyroxene and plagioclase (S-G ores). The Cr-Ni and S-G ores endured High-T alterations related to injection of leucogranite dykes, producing Ni and Co rich in chromite from Cr-Ni ores; and low-T alteration, due mainly to serpentinization/weathering process. The latter resulted in the serpentinization phenomenon of peridotites, followed by carbonation, along with the leaching of the Ni-arsenides and sulfides, giving rise to Ni-rich silicates in the Cr-Ni ores, and Fe-rich silicates in the S-G ores.


Cr-Ni ores S-G ores Serpentinization Beni bousera 


  1. 1.
    Frets, E.C., et al.: The Beni Bousera peridotite (Rif belt, Morocco): an oblique-slip low-angle shear zone thinning the subcontinental mantle lithosphere. J. Petrol. 55(2), 283–313 (2014)CrossRefGoogle Scholar
  2. 2.
    González-Jiménez, J.M., et al.: Zircon recycling and crystallization during formation of chromite- and Ni-arsenide ores in the subcontinental lithospheric mantle (Serranía de Ronda, Spain). Ore Geol. Rev. 90(March), 193–209 (2017)CrossRefGoogle Scholar
  3. 3.
    Hajjar, Z., Gervilla, F., Essaifi, A., Wafik, A.: Mineralogical and geochemical features of the alteration processes of magmatic ores in the Beni Bousera ultramafic massif (north Morocco), J. Afr. Earth Sci. 132 (2017)Google Scholar
  4. 4.
    Elbaghdadi, M.: Les filons acides dans le massif ultrabasique des Beni Bousera (Rif interne, Maroc) : Caractérisation pétrographique, géochimique et âge de mise en place (Rb-Sr) (1993)Google Scholar
  5. 5.
    Hajjar, Z., Wafik, A., Constantin, M., Bhilisse, M.: Process of serpentinization in the ultramafic massif of Beni Bousera (internal Rif, Morocco). Arab. J. Geosci., 9(6) (2016)Google Scholar
  6. 6.
    Hajjar, Z., Wafik, A., Constantin, M.: Magnesite Veins from Ultramafic Massif of Beni Bousera (Internal Rif, Morocco). J. Tethys 3(2), 152–162 (2015)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Cadi Ayyad UniversityMarrakechMorocco
  2. 2.Universidad de GranadaGranadaSpain

Personalised recommendations