produced gold mineralization hosted

A Review of Gold Mineralization Styles in Finland

2003-11-1 · A wide range of styles of gold mineralization has been recognized in Finland, including orogenic, metamorphosed epithermal, skarn- or epigenetic ironstone-hosted, intrusion-related (nonskarn), massive sulfide-hosted, paleoplacer, and placer deposits. Gold production in the past was principally as a byproduct from the mining of Paleoproterozoic ...

Sediment‐Hosted Gold Deposits in Southeast Asia

2018-10-15 · Sediment-hosted gold (SHG) deposits are becoming more widely recognized in the Southeast Asian region. ... Two centuries of Chinese alluvial and eluvial mining at Buduk in northwest Kalimantan has produced a significant unrecorded amount of gold. Structurally controlled feeder zones frequently contain higher-grade gold mineralization (e.g ...

Nature of ore-forming fluid and formation conditions of …

2017-10-1 · Section snippets Geological setting, alteration, quartz-carbonate veins and gold mineralization. The BIF-hosted Amalia gold deposit is located in the Amalia greenstone belt, about 325 km WSW of Johannesburg, South Africa.The Amalia greenstone belt forms part of the Amalia-Kraaipan greenstone-granitoid terrane in the Kimberley Block of the Kaapvaal craton …

Agnico Eagle Mines Limited

Higher grade gold mineralization is hosted mainly by narrow quartz veins within carbonated ultramafic rock surrounding a large northeasterly trending anticline centered on the historic shaft. ... .4 g/t gold for 35,200 ounces of gold and production from open pits occurred intermittently between 1999 and 2007 and produced approximately 250,000 ...

Characteristic of gold mineralization associated with …

2021-3-20 · Well-known controversy over the genesis of orogenic gold mineralization in granites has been a subject of research worldwide. Hamash gold mine is considered one of the pharaohs mines in the South Eastern Desert of Egypt, where gold mineralization is hosted by granites. In this study, we utilized field, ore microscopy, and geochemical data to determine the genesis of …

Contemporaneous formation of vein-hosted and …

2019-6-10 · A significant portion of the orogenic-type gold mineralization throughout the world is hosted by metasedimentary rocks (Robert et al. 2007; Goldfarb et al. 2005; Groves et al. 2003; Dubé et al. 2015).These deposits include vein-hosted mineralization that commonly occurs in meta-turbidites (e.g., the Victorian goldfields, southeastern Australia; the Otago Goldfield, New …

A stable isotope study of black shale-hosted gold …

2022-6-6 · The Clogau Formation shales hosting the mineralization contain calcite ... The stable isotope data show that mineralization in the Dolgellau gold belt probably involved the introduction of an externally derived fluid into the shales of the Mawddach Group and that it interacted to a significant extent with the shales. This interaction makes it ...

Role of faults and folding in controlling gold …

2022-2-23 · Melbourne, hosted by quartz-rich Ordovician turbidites of the Bendigo Zone (Gray et al. 2003) in the western Lachlan Fold Belt (Figure 1). The majority of gold deposits in the Bendigo Zone are hosted by quartz veins associated with low-displacement, steeply dipping re-verse faults in the hangingwalls of major intrazone

Geology, Geochemistry and Geochronology of the Gold …

The Neoproterozoic (900-600 Ma) Arabian Nubian Shield is an example of Precambrian plate tectonics and arc accretion. The Western Ethiopian Shield (the southern extension of ANS) is geo-tectonically a characteristic of lower grades of

Aurion Identifies New Zones and Extends Gold …

2021-7-29 · The intercepts represent the first conglomerate hosted gold mineralization encountered at Aamurusko and extend the envelope with zones of gold mineralization to the north. Drill hole AM21180 was collared approximately 200 m north of Aamurusko NW target and is an upper cut hole for AM20127. AM21180 contained visible gold grains and returned ...

Structural setting, style and timing of vein-hosted gold …

2003-9-13 · Gold-bearing veins within the Liese zone of the Pogo deposit display a two-stage evolutionary history that records temporal variation in kinematics, fluid chemistry and temperature. Several stacked shallow northwest-dipping shear veins are developed at Pogo, and collectively comprise the Liese Zone. Veins consist of: (1) early, narrow biotite-bearing shear veins; (2) …

(PDF) Banded iron formation-hosted gold …

2015-6-11 · Banded iron formation-hosted gold mineralization in the Geraldton area, northwestern Ontario: structural setting, mineralogical characteristics and geochronology June 2015 DOI: 10.13140/RG.2.1 ...

Primary gold mineralization in the Lisungwe Valley area, …

2019-12-1 · Gold mineralization in the Little Chisumbwiti river valley is hosted in northeast – southwest trending quartz—sulphide vein sets, where it occurs as flakes ranging in size between 0.24 and 4 mm. The gold is associated with a paragenetically-late pyrite-chalcopyrite-sphalerite generation of sulphide precipitation, and to a lesser extent ...

Intrusive-breccia-hosted gold mineralization associated

2016-12-6 · Gold mineralization occurs in Soil geochemical sampling in 1999 and 2000 defined an. hydrothermal breccia that overprints earlier intrusive and area 1300 by 400 m that is anomalous in gold and. tectonic breccias. The best zones of mineralization occur bismuth.

Formation of gold deposits: Review and evaluation of the …

2009-5-1 · The metals were mobilised by the metamorphic fluid produced during the orogenic processing of the Torlesse Terrane rocks and the concentrations of Au, As, Hg and Sb in this fluid are calculated to be 0.08, ... Gold mineralization is hosted in syn- to post-peak metamorphic shear zones. Ore and hydrothermal alteration assemblages replace the ...

Orogenic gold mineralization at the Chah Bagh deposit, …

2014-9-1 · The Chah Bagh gold deposit, in the Muteh gold district, is located in the central part of the Sanandaj-Sirjan zone (SSZ), Iran. Gold mineralization at Chah Bagh is hosted by a Paleozoic sequence of rocks that is dominated by deformed schist, metarhyolite, and amphibolite that exhibits a greenschist- to lower amphibolite-facies metamorphism.

Structural controls on granitoid-hosted gold …

2018-12-18 · The > 9 Moz total aggregate gold endowment at the Edikan mine, Kumasi Basin, Ghana, is contained within a cluster of orogenic gold deposits located along the Akropong fault zone. The granitoid-hosted orebodies at …

Age and Geologic Setting of Quartz Vein-Hosted Gold …

2016-1-1 · The gold-bearing quartz veins consist of up to four generations of quartz, each deposited from a fluid of different composition and temperature (Wilkinson et al., 1999).Gold mineralization is hosted by the second and fourth generations of quartz (Earls et al., 1996; Wilkinson et al., 1999; Parnell et al., 2000).Views have changed on the genesis and timing of …

Mineral Association, Gold Mineralization and Deposit Type …

The gold mineralization at the deposit is interpreted as forming in shallow high sulfidation epithermal systems. The mineralization has been noted to occur in two different styles: a) well-confined hydrothermal breccias. b) associated with pyrite stock-stockwork. ... The main brecciation and stockwork are hosted within secondary quartzite ...

Syenite-hosted gold mineralization and hydrothermal …

Show simple item record. Syenite-hosted gold mineralization and hydrothermal alteration at the Young-Davidson deposit, Matachewan, Ontario

(PDF) Gold mineralization in Tanzania-a review.

1984-1-1 · Geita Gold Mine produced 30 t from a stratabound Banded Iron Formation (BIF) hosted gold deposit until it closed down in 1966. Geita Mine is since 1990 reconstructed and AndloGoldAshanti produced ...

Turbidite-hosted gold mineralization at the Dolaucothi …

The mineralization is controlled by structures produced during the Caledonian orogeny, in particular a thrust fault which formed the host to the Roman lode, a flat-lying auriferous quartz reef up to 6 m thick.Gold occurs in a variety of hosts including pyritic shales containing both euhedral and framboidal pyrite, quartz-carbonate stringer ...

Granite-hosted gold mineralization at Timbarra, Northern …

2001-9-1 · The Linares deposit consists of an intrusion-hosted gold mineralization that shares many ... D 3, and D4) of the belt. North-south shortening during D2 produced a penetrative, generally east ...

Banded Iron Formation-hosted Gold Deposits Make for …

2019-9-27 · Newmont Goldcorp''s (TSX:NGT,NYSE:NEM) 4,000 tonne per day operation at the Musselwhite mine went into commercial production in 1997 and since then has produced more than 4 million ounces of gold ...

Marble-Hosted Submicroscopic Gold Mineralization at …

2015-6-11 · THE ASIMOTRYPES is an example of carbonate-hosted, submi-croscopic gold mineralization, hosted by the Southern Rhodope Core Complex (Fig. 1), a recently recognized glob-ally important example of extensional exhumation of meta-morphic core complex (Dinter and Royden, 1993; Sokoutis et al., 1993; Dinter, 1998; Brun and Sokoutis, 2007). It is part of

The structural history and mineralization controls of the …

2016-5-24 · The Geita Hill gold deposit is located within the Geita Greenstone Belt (Sanislav et al. 2014), which also hosts a number of other major deposits including Lone Cone, Nyankanga, Area3, Kukuluma, Matandani, Chipaka, Pit 30, Ridge 8, Star & Comet, and Roberts—all of which with resources >100,000 oz (Fig. 1).The greenstone belt currently produces ∼500,000 oz of …

Late Jurassic fault-hosted gold mineralization of the …

The Golden Saddle deposit is a lithologically and structurally controlled gold deposit located in west-central Yukon Territory. The deposit is located near the Klondike district, which is best known for its rich history of placer gold mining. The discovery of the Golden Saddle deposit in 2008 was the first significant lode gold discovery in this region. Based upon the geology, …

Hydrothermal alteration and gold mineralization of the …

2019-10-1 · The hydrothermal alteration of phyllites hosting the gold mineralization is recognized in two distinct zones i.e. a distal albite-chlorite and a proximal albite-ankerite-pyrite alteration zone. The distal albite-chlorite alteration in the phyllites ( Fig. 4 a) exhibits a dark greenish grey color, due to the moderate chlorite content.

Gold Mineralization at the Syenite-Hosted Beattie Gold …

Lithology-controlled mineralization is hosted by the syenite intrusion and associated with iron carbonate and sericite alteration. Lithology-controlled mineralization is low grade (1–2 g/t Au) and associated with arsenian pyrite and arsenopyrite, with gold being in solid solution within the spongy As-rich cores of pyrite.

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2  · 0.72 g/t gold equivalent over 27.4 meters including 2.47 g/t gold equivalent over 4.6 meters and 0.66 g/t gold equivalent over 6.1 meters and 0.59 g/t gold equivalent over 18.3 meters in hole E-22-012; 0.79 g/t gold equivalent over 19.9 meters in hole E-22-014. Gold equivalent based on US$1,800/oz gold, US$25/oz silver and 50% for silver recovery.

Gold mineralization in China: Metallogenic provinces, …

2016-8-1 · 1. Introduction. With the discovery of many large and super large gold deposits in China during the last 30 years, the country''s annual gold production has increased significantly from approximately 25 t in 1980 to 180 t in 1999 and to 340 t in 2010, to become one of the biggest gold producers in the world inese geologists have carried out extensive research on …

(PDF) Gold Mineralization

The Sukari gold mine (18.8Mt @ 2.14g/t Au) is located 15km west of the Red Sea coast in the southern central Eastern Desert of Egypt. The vein-type deposit is …

Targeted Geoscience Initiative 4. Lode Gold Deposits in …

Abstract: Gold deposits hosted by Archean banded iron formation represent a key exploration target in Canada. As part of the Targeted Geoscience Initiative-4 Lode Gold project, the goal of the project is to characterize the structural controls on gold mineralization and their footprints.

AN OVERVIEW OF SEDIMENTARY-ROCK-HOSTED GOLD …

2019-9-27 · of sedimentary-rock-hosted gold mineralization are impor-tant indicators, and merit more detailed examination. This report provides an overview of gold mineralization in the area along the Arm road (Figures 1 and 2), with empha-sis upon two prospects hosted by Cambro-Ordovician sedi-mentary rocks. It is based upon company assessment 23