Kofi Adomako-Ansah
Akita University
4Publications
2H-index
5Citations
Publications 4
Newest
Published on Jun 1, 2018in Mineralium Deposita 3.37
Kofi Adomako-Ansah2
Estimated H-index: 2
(Akita University),
Daizo Ishiyama12
Estimated H-index: 12
(Akita University),
Rodney Allen13
Estimated H-index: 13
Adjacent to the world-class Boliden deposit, fine- to coarse-grained Zn-Pb-Sb-Au-rich sulfide-sulfosalt-bearing horizons occur within the base of a metasedimentary succession that has previously been regarded to stratigraphically overlie the Skellefte Volcanics and Boliden deposit. The metasedimentary succession comprises interbedded mudstone and normal-graded crystal-rich volcanic sandstone-siltstone units, interpreted to be low-density turbidity currents in a subaqueous environment below wave ...
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Published on Oct 1, 2017in Ore Geology Reviews 3.99
Kofi Adomako-Ansah2
Estimated H-index: 2
(Akita University),
Toshio Mizuta9
Estimated H-index: 9
(Akita University)
+ 1 AuthorsNapoleon Q. Hammond2
Estimated H-index: 2
(University of Limpopo)
Abstract Orogenic gold mineralization in the Amalia greenstone belt is hosted by oxide facies banded iron-formation (BIF). Hydrothermal alteration of the BIF layers is characterized by chloritization, carbonatization, hematization and pyritization, and quartz-carbonate veins that cut across the layers. The alteration mineral assemblages consist of ankerite-ferroan dolomite minerals, siderite, chlorite, hematite, pyrite and subordinate amounts of arsenopyrite and chalcopyrite. Information on the ...
2 Citations Source Cite
Published on Apr 1, 2013in Resource Geology 1.26
Kofi Adomako-Ansah2
Estimated H-index: 2
(Akita University),
Toshio Mizuta9
Estimated H-index: 9
(Akita University)
+ 3 AuthorsHitoshi Chiba20
Estimated H-index: 20
(Okayama University)
The Blue Dot gold deposit, located in the Archean Amalia greenstone belt of South Africa, is hosted in an oxide (± carbonate) facies banded iron formation (BIF). It consists of three stratabound orebodies; Goudplaats, Abelskop, and Bothmasrust. The orebodies are flanked by quartz-chlorite-ferroan dolomite-albite schist in the hanging wall and mafic (volcanic) schists in the footwall. Alteration minerals associated with the main hydrothermal stage in the BIF are dominated by quartz, ankerite-dolo...
3 Citations Source Cite
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