Archaean lode gold deposits

Groves, David; Foster, R. P.

doi:10.1007/978-94-011-2128-6_3

Cited by 24 publications

(24 citation statements)

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“…Plan géologique et stéréogrammes des éléments structuraux de l'indice "Mariposite" 32 FIGURE 7. Photomicrographies du matériel bréchique associé à la faille "sud" à l'indice "Mariposite" 37 (Roberts 1987;Colvine et al 1988;Card et al 1989;Foster 1989;Groves et al 1989;Groves et Foster 1991;Foster et Piper 1993;Hodgson 1990Hodgson , 1993Robert 1995) ont mis en évidence un ensemble de caractéristiques communes à la plupart de ces gisements à travers le monde. Il ressort que la plupart des gisements hydrothermaux d'or archéens sont spatialement associés avec des failles d'échelle crustale et qu'ils se trouvent à l'intérieur ou en bordure des ceintures de roches vertes métamorphisées au faciès des schistes verts jusqu'au faciès des amphibolites.…”

Section: Resumeunclassified

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Caractéristiques, chronologie et typologie des minéralisations aurifères de la région du Lac Shortt (Québec), sous-province archéenne de l'Abitibi /

Brisson¹

1998

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Section: Resumeunclassified

“…(Kerrich 1983;Roberts 1987;Groves et al 1989;Colvine et al 1988;Card étal 1989;Ho et ai. 1990;Mikucki étal 1990;Groves et Foster 1991;Hodgson 1993;McCuaig et Kerrich 1994 -Comme ailleurs en général, les altérations aurifères se sont superposées sur les assemblages rmnéralogiques produits lors du métamorphisme régional.…”

Section: éVénements Structuraux Régionauxunclassified

Caractéristiques, chronologie et typologie des minéralisations aurifères de la région du Lac Shortt (Québec), sous-province archéenne de l'Abitibi /

Brisson¹

1998

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“…Also, Groves and Foster (1991), noted that most stable isotopie data of the Au-bearing quartz veins are consistent with either magmatic or metamorphic source of transporting fluids.…”

Section: Discussionmentioning

confidence: 93%

“…These facts most probably preclude the model of crustal contamination, and the porphyry magmatic models of Groves and Foster (1991). Still we have two possible sources of ore components, which are metamorphic and mantle-derived.Most probably, the contact meta-ferrogabbro could be a possible source of gold.…”

Section: Discussionmentioning

confidence: 95%

Geochemistry of Umm Rus gold - quartz veins, Central Eastern Desert Egypt. A new contribution

2001

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Gold-bearing quartz veins of the Umm Rus area occur at the south-eastern contact of a Precambrian granodiorite cupola within younger gabbros of 573-615 Ma belonging to the Pan African orogenic belt. The rocks are intruded within low-grade metasediments. At such contact, a hybrid zone is developed characterized by the occurrence of quartz diorite which grades into diorite and meta-ferrogabro. A limited number of miner alized quartz veins cut the granodiorite-gabbro complex. Different alteration zones are developed in the vicinity of the quartz veins.The quartz veins have two main trends; NS and N30 E, the latter one is usaually gold-bearing. The mineral ized parts of the veins commonly consist of highly sheared and banded smoky quartz, and the gold content depends on the relation with the dykes. The element is strongly correlated with As and Ag, but moderately with Cu. Near to intermediate and basic dykes, the contents of Au, Ag and As are noticably increased.

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“…Barbosa ('1966(' , em Silva, 1982 Tassinari (1996) Groves & Foster (1996). Jacobi (1999) (Fisher, 1961 (Fisher & Schmincke, 1984).…”

Section: Mineralizações Auríferas Do Tapajósmentioning

confidence: 99%

Caracterização de um sistema epitermal "High Sulfidation" paleoproterozóico na Província Aurífera do Tapajós, Pará

Nunes¹

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Archaean lode gold deposits

Cited by 24 publications

References 50 publications

Caractéristiques, chronologie et typologie des minéralisations aurifères de la région du Lac Shortt (Québec), sous-province archéenne de l'Abitibi /

Caractéristiques, chronologie et typologie des minéralisations aurifères de la région du Lac Shortt (Québec), sous-province archéenne de l'Abitibi /

Geochemistry of Umm Rus gold - quartz veins, Central Eastern Desert Egypt. A new contribution

Caracterização de um sistema epitermal "High Sulfidation" paleoproterozóico na Província Aurífera do Tapajós, Pará

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