 | | Journal (article/letter/editorial) | | veins from the Yirisen deposit, Sula Mountains greenstone belt, Masumbiri, Sierra Leone Ibrahim J. Barrie... Abstract The auriferous veins at Yirisen, Masumbiri, Sierra Leone, occurring mainly in the form of sericitic...Mountains greenstone belt; Yirisen; Sierra Leone 1. Introduction The Yirisen gold deposit Žbetween latitude 08849X...08850X N and longitude 11844X and 11845X W, Sierra Leone., accessed by an adit and trenches, is located...the Archean basement complex of north-central Sierra Leone ŽFig. 1a.. Together with other smaller greenstone |  | | Journal (article/letter/editorial) | | Africa: A new synthesis of the Archaean geology in Sierra Leone, Liberia, Guinea and Ivory Coast Hugh Rollinson...Africa: A new synthesis of the Archaean geology in Sierra Leone, Liberia, Guinea and Ivory Coast, Precambrian...Africa: a new synthesis of the Archaean geology in Sierra Leone, Liberia, Guinea and Ivory Coast Hugh Rollinson...geochronology of the little-known Archaean rocks in Sierra Leone, Liberia, Guinea and Ivory Coast is presented...different ages. The larger supracrustal belts in Sierra Leone contain a thick basalt-komatiite sequence derived |  | Gunn, A.G., Dorbor, J.K., Mankelow, J.M., Lusty, P.A.J., Deady, E.A., Shaw, R.A., Goodenough, K.M. (2018) A review of the mineral potential of Liberia. Ore Geology Reviews, 101. 413-431 doi:10.1016/j.oregeorev.2018.07.021 | Journal (article/letter/editorial) | | zones. Gold mining commenced at the New Liberty deposit in western Liberia in 2015, while significant gold...the border with Sierra Leone. Many of these are considered to be part of a single province that includes...includes Jurassic age diamondiferous kimberlites in Sierra Leone and Guinea. Deposits and occurrences of a wide...Liberia is located in West Africa, bordered by Sierra Leone, Guinea, Côte d’Ivoire and to the south-west...These include barite, heavy mineral beach sands (rutile, zircon, ilmenite and monazite), phosphate, clays |  | Velásquez, German, Salvi, Stefano, Siebenaller, Luc, Béziat, Didier, Carrizo, Daniel (2018) Control of Shear-Zone-Induced Pressure Fluctuations on Gold Endowment: The Giant El Callao District, Guiana Shield, Venezuela. Minerals, 8 (10) 430 doi:10.3390/min8100430 | Journal (article/letter/editorial) | | Fluctuations on Gold Endowment: The Giant El Callao District, Guiana Shield, Venezuela German Velásquez 1,...2018 Abstract: The El Callao district, with a total endowment of more than 2000 t Au...of South America (Figure 1), the El Callao gold deposit is hosted by the El Callao shear zone, a megatectonic...gold district in Venezuela (>2000 t gold [1]) and it is considered as a giant orogenic gold deposit [2]...(740 t), is the largest producing mine in this district [2]. Orogenic gold deposits are typically formed |  | | Journal (article/letter/editorial) | | diffusion in quartz from the Libčice orogenic gold deposit, Bohemian Massif Tomáš Hrstka a,⁎, Jean Dubessy...is reported for the Libčice orogenic-type gold deposit located in the Central Bohemian Plutonic Complex...formation of different types of fluids present in the deposit are discussed, including the genesis of HCO− 3...production/formation of HCO− 3 and H2 at the Libčice deposit remain open to discussion, reactions in the C–O–H...inclusion study is an important part of any ore deposit research and helps us to understand the fluid–rock |
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