Geochemistry of fluids associated to the Bou-Dahar Pb-Zn Mississippi Valley-type deposits (Morocco)

Samira Adil, Mohammed Bouabdellah, Fidel Grandia, Esteve Cardellach, Àngel Canals

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)

Abstract

The Bou-Dahar Pb-Zn Mississippi Valley deposits located in the eastern part of the High Atlas Range (Morocco) are hosted by a Liassic reefal complex. Fluid inclusion and 'crush-leach' data show that two distinct fluids were involved in the mineralisation deposition: a warmer, more saline fluid (180 °C, > 25 wt% NaCl equivalent) and a cooler, less saline fluid (70 °C, 16 wt% equivalent NaCl). Mixing of these two fluids resulted in the precipitation of the ore. The solute composition of the ore-forming brine suggests that the MVT mineralising fluids were probably a mixture of halite-dissolution fluids and evaporated seawater. © 2004 Académie des sciences. Publié par Elsevier SAS. Tous droits réservés.
Original languageEnglish
Pages (from-to)1265-1272
JournalComptes Rendus - Geoscience
Volume336
Issue number14
DOIs
Publication statusPublished - 1 Nov 2004

Keywords

  • Bou-Dahar
  • Brines
  • Crush-leach
  • Fluid inclusion
  • Mixing
  • Morocco

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