کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4696880 | 1637228 | 2016 | 6 صفحه PDF | دانلود رایگان |
• A world-class orogenic gold deposit in the Paleoproterozoic Baoulé-Mossi domain of the West African Craton
• Structurally controlled continuous gold mineralization over 5 km-long
• Polycyclic deformation events resulting in multiple mineralized episodes
• Large hydrothermal alteration halo extending more than 50 m away from gold mineralization
The world-class > 4 Moz Wona-Kona gold deposit is hosted within the Paleoproterozoic Birimian Houndé greenstone belt which is the most important gold mineralized belt in the western part of Burkina Faso, with a cumulative reserve of ~ 11 Moz. The mineralization consists of a pervasive silicification with disseminated pyrite–arsenopyrite crosscut by quartz–carbonate veinlets (1 to 10 cm wide) forming a vertical, thick (up to 40 m) and laterally extensive (5 km) northeast trending orebody hosted within a large (200 m wide) shear zone of regional extent. Gold occurs in association with 3 generations of pyrite and 2 generations of arsenopyrite. Free gold, interpreted as the last mineralizing event, occurs as late fracture filling in the pervasive silicification zone.
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Journal: Ore Geology Reviews - Volume 78, October 2016, Pages 667–672