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The Paleoproterozoic Copper‐Gold Deposit of Gaoua, Burkina Faso: Evidence for A Polyphased Mineralization
Author(s) -
MIGNOT Elodie LE,
SIEBENALLER Luc,
BÉZIAT Didier,
SALVI Stefano,
ANDRÉMAYER AnneSylvie,
REISBERG Laurie,
VELASQUEZ German,
ZIMMERNANN Catherine,
FRANCESCHI Guy
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12378_5
Subject(s) - mineralization (soil science) , art , geology , soil water , soil science
Due to increasing gold prices, gold exploration has intensified in the last 10 years, especially in the West African craton where many propects exist. Among these, the three copper-gold occurrences Dienemera, Gongondy and Mont Biri, of the Gaoua district (B2Gold), southern Burkina Faso, are thought to be part of a porphyric system (Sillitoe, 2007) but have not been so far subjected to detailed studies to confirm this hypothesis. This study presents mineralogical and fluid inclusion data for the mineralization and associated gangue phases that allow us to propose a metallogenic model for the formation of the Gaoua copper-gold system. In addition, the age of the mineralizing event was determined by Re-Os dating of sulfides.