Abstract-The Ishiagu lead-zinc deposits of southeastern Nigeria are associated with folded shales of the Asu River Group. The PbZn mineralization is restricted to a series of closely spaced, steeply dipping subparallel fractures which trend NW-SE and typically form en-echelon patterns. Along a second set of fissures, oriented NE-SW and of an earlier generation than the NW-SE system, only the gangue minerals (siderite and quartz) are characteristic. The style of mineralization is exclusively fissure-filling, whereas the distinctive pattern of mineralization--ore plus gangue minerals in the NW-SE fractures and gangue minerals in the NE-SW fissures-suggests two separate phases of epigenetic hydrothermal emplacement.
MC, E (2022). The Geologic Setting of Lead-Zinc Deposits of Ishiagu, Southeastern Nigerian. Afribary. Retrieved from https://afribary.com/works/the-geologic-setting-of-lead-zinc-deposits-of-ishiagu-southeastern-nigerian
MC, EZEPUE "The Geologic Setting of Lead-Zinc Deposits of Ishiagu, Southeastern Nigerian" Afribary. Afribary, 23 Oct. 2022, https://afribary.com/works/the-geologic-setting-of-lead-zinc-deposits-of-ishiagu-southeastern-nigerian. Accessed 25 Apr. 2024.
MC, EZEPUE . "The Geologic Setting of Lead-Zinc Deposits of Ishiagu, Southeastern Nigerian". Afribary, Afribary, 23 Oct. 2022. Web. 25 Apr. 2024. < https://afribary.com/works/the-geologic-setting-of-lead-zinc-deposits-of-ishiagu-southeastern-nigerian >.
MC, EZEPUE . "The Geologic Setting of Lead-Zinc Deposits of Ishiagu, Southeastern Nigerian" Afribary (2022). Accessed April 25, 2024. https://afribary.com/works/the-geologic-setting-of-lead-zinc-deposits-of-ishiagu-southeastern-nigerian