geological setting of the wassa gold deposit sw ghana

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10.1016/j.oregeorev.2015.09.024 | DeepDyve

Mar 18, 2011· Wassa West district and major gold deposits and mining concessions considered in Western Ghana (adapted from Hirdes et al. ) Land use has substantially altered the region's natural vegetation communities, and today rainforest covers less than 20% of the district, mostly within the Bonsa (210 km²), Ekwumi (173 km²), and Neung (158 km² ... The Mining industry of Ghana accounts for 5% of the country's GDP and minerals make up 37% of total exports, of which gold contributes over 90% of the total mineral exports. Thus, the main focus of Ghana's mining and minerals development industry remains focused on gold. Ghana is Africa's largest gold producer, producing 80.5 t in 2008.

NI 43-101 TECHNICAL REPORT ON MINERAL RESOURCES …

Geological setting of the Wassa gold deposit, SW Ghana, 1 Exploration history The Wassa deposit is a multi-million ounce (Moz) low-grade orogenic gold system Historical production is over 1 Moz of gold and current indicated resources are around 29 Moz (average grade of 206 g/t, Golden Star Resources Ltd, 2014)Wassa has been an artisanal mining ... Apr 13, 2007· Golden Star is also developing the Wassa deposit with proven and probable reserves of 21,9 million t at a grade of 1,34 g/t Au or 940 000 oz gold. In May, 2007, the company announced the development of the Hwini-Butre and Benso gold project, as a satellite source of feed for the Wassa gold mine and which is expected to have a significant impact ...

Golden Star Announces Drilling Results at its Wassa and ...

title = "Geological setting of the Wassa gold deposit, SW Ghana", abstract = "Including past production, current indicated and inferred resources, Wassa is a 5 Moz poly-deformed early-orogenic gold deposit located on the eastern flank of the Ashanti Belt, in southwest Ghana. NI 43-101 Technical Report on The Asuogya Licence, Ghana Report Prepared for: Castle Peak Mining Ltd 510 - 999 West Hastings Street, ... 7.4 Gold mineralisation in southwest Ghana 13 7.5 Licence Geology 14 8 DEPOSIT TYPE 16 9 EXPLORATION 17 ... NI 43-101 Technical Report on The Asuogya Licence, Ghana 2 INTRODUCTION 2.1 Background

Golden Star Announces Drilling Results at its Wassa and ...

The origin of gold for the paleoplacer deposit in southwest Ghana has long been debated (Sestini, 1973, Milesi et al., 1991).Before robust age constraints were available (Davis et al., 1994), these paleoplacers were thought to be derived from "Birimian-type" deposits such as those along the Ashanti Fault (e.g. Obuasi).However, authors including Milesi et al. (1991) pointed out some ... Gold Deposits of the Birimian and Tarkwaian in Ghana. GUIDEBOOK SERIES Volume 57 April 22 – May 1, 2018 ... Generalized regional geology of southwest Ghana. Modified after BRGM 1:2M Geological Map of West Africa. ... Cretaceous palinspastic reconstruction of the Guiana and south West Africa shields ..... 3 1-3. Simplified geological map of ...

WASSA GOLD MINE, GHANA

• Possible sourced from eroded older deposit to SE or E, with Wassa speculated as a potential source. Fine particulate gold and lack of nugget gold or gold in quartz suggests source from a disseminated gold deposit, such as a sulphide-rich shear zone hosted deposit Conglomeratic sample from the orebody B /Iduapriem Mine Tarkwaian Paleoplacer Au Tshibubudze et al., 2015 Parra-Avila et al., 2015-Constraints on the timing of mineralisation of the Wassa gold deposit, SW Ghana. The new age on the Wassa deposit is consistent with the ...

Intrusion-related affinity and orogenic gold overprint at ...

Geological setting of the Wassa gold deposit, SW Ghana By Stéphane Perrouty, Mark W. Jessell, Yan Bourassa, John Miller, Daniel Apau, Luis A. Parra-Avila, Élodie Le Mignot, Germán Velásquez, Jérôme Ganne, Luc Siebenaller, Lenka Baratoux, Laurent Aillères, Anne-Sylvie André-Mayer, Didier Béziat and Stefano Salvi Gold plays an important role in the economy of Ghana, with up to 1500 tons of gold produced throughout its history.Ghana has five major types of gold deposits. Native gold in steeply dipping quartz veins in shear zones at the margins of Birimian basins, arsenopyrite in sulfur bodies, disseminated mineralization in basin granitoid rocks and alluvial placer gold in river deposits in gravel are ...

Geological Companies In Ghana - agriturismotorremozza.it

Geological setting of the Wassa gold deposit, SW Ghana Article (PDF Available) in Ore Geology Reviews 78 · September 2015 with 1,386 Reads How we measure 'reads' sation of the Wassa gold deposit, SW Ghana. The new age on the Wassa deposit is consistent with the possibility of an early gold mineralizing vent during the Eoeburnean phase at ca. 2191e2158 Ma. Regolith studies. Arhin and Saeed, 2015- Coupled geochemical and regolith mapping of units in complex regolith terrains of savannah re-gions of NW Ghana.

Stefano Salvi – Géosciences Environnement Toulouse

Today the most significant gold pro-ducing country in the area is Ghana (Hilson, 2002a). The earliest European attempts to extract gold on a large scale were concen-trated in Tarkwa and Prestea regions in the late 19th century. A gold rush in the early 20th century was followed by a mass in-crease in gold production. After Ghana gained ... Revised Eburnean geodynamic evolution of the gold-rich southern Ashanti Belt, Ghana, with new field and geophysical evidence of pre-Tarkwaian deformations.Precambrian Research, DOI: 10.1016/j.precamres.2012.01.003

2010-2018 - GeoRessources

Jul 15, 2019· Golden Star Announces Drilling Results at its Wassa and Father Brown Deposits Including the Extension of Gold Mineralization at Both Locations PR Newswire July 15, 2019 Golden Star Announces Continued Positive Drilling Results at its Wassa Deposit: November 13, 2019: Golden Star Announces Drilling Results at its Wassa and Father Brown Deposits Including the Extension of Gold Mineralization at Both Locations: July 15, 2019: Golden Star Files Updated Technical Report for Wassa Gold Mine: June 24, 2019