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Vergenoeg Deposit

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Journal Article
Journal: Geology
Published: 10 December 2020
Geology (2021) 49 (4): 457–462.
... by in situ laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) analysis, cumulate fayalite (Fe 2 SiO 4 ) in the Paleoproterozoic Vergenoeg F-Fe-REE deposit of the Bushveld large igneous province (LIP) in South Africa contains the highest heavy REE (HREE) contents ever recorded for olivine...
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Journal Article
Journal: Economic Geology
Published: 01 August 1998
Economic Geology (1998) 93 (5): 564–586.
...David M. Borrok; Stephen E. Kelser; Rudolf H. Boer; Eric J. Essene Abstract Vergenoeg is a fluorite-bearing massive iron oxide deposit that is genetically related to granites of the Bushveld Complex. It consists of a pipe-shaped body containing primary fayalite, fluorite, apatite, ilmenite...
Journal Article
Journal: Economic Geology
Published: 01 July 1985
Economic Geology (1985) 80 (4): 1181–1200.
...I. T. Crocker Abstract Fluorite-hematite mineralization on the farms Kromdraai and Naaupoort near Rust de Winter is of volcanogenic origin and is related to a rhyolitic pyroclastic suite and associated ore deposits. These include the Vergenoeg mine orebody, which is a discordant breccia pipe vent...
Image
(A) Chondrite-normalized rare earth element (REE) patterns for <b>Vergenoeg</b> (S...
in > Geology
Published: 10 December 2020
). Also shown are the REE pattern of the Vergenoeg fayalite cumulates (from A) and of the rhyolites of Round Top HREE deposit (Texas, USA) ( Jowitt et al., 2017 ). Normalization factors in A and D are from McDonough and Sun (1995) .
Journal Article
Published: 01 September 2004
South African Journal of Geology (2004) 107 (3): 413–430.
... extreme value of 231ppm). The range in R o values is also large from 0.716 to 0.851. The variation displayed by these two parameters is shown in Figure 3a and b . The deposit that shows the least variability is Vergenoeg (Figure 3a ) with Sr from 32 to 70ppm, and R o from 0.7166 to 0.722. Since...
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Journal Article
Published: 10 November 2020
South African Journal of Geology (2020) 123 (4): 633–648.
... 374 and 1 334 Ma. The Vergenoeg Group, represented by the sedimentary Kunjas and volcanic Barby and Haiber Flats formations, formed in a subduction setting at the margin of the Konkiep Terrane. This ~1 217 to 1204 Ma magmatic cycle ended with the accretion of Namaqua-Natal terranes to the Kalahari...
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Journal Article
Journal: Economic Geology
Published: 01 December 2007
Economic Geology (2007) 102 (8): 1471–1498.
...Garry J. Davidson; Hamish Paterson; Sebastien Meffre; Ron F. Berry Abstract Oak Dam East is a large (~560 Mt of 41–56 wt % Fe), Cu-Au-U-bearing, massive Fe oxide deposit in the northeastern Gawler craton, South Australia. It is one of several unmined deposits in the same province as the giant...
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Journal Article
Journal: Economic Geology
Published: 01 November 2000
Economic Geology (2000) 95 (7): 1371–1388.
... of fluid inclusions. I: Fluorite and sphalerite at 1 atmosphere confining pressure : Economic Geology , v. 79 , p. 141 – 161 . Borrok , D.M. , Kesler , S.E. , Boer , R.H. , and Essene , E.J. , 1998 , The Vergenoeg magnetite-fluorite deposit, South Africa: Support...
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Journal Article
Journal: Economic Geology
Published: 01 February 2019
Economic Geology (2019) 114 (1): 35–46.
... : Economic Geology , v. 81 , p. 640 – 659 . Hou , T. , Charlier , B. , Namur , O. , Schutte , P. , Schwarz-Schampera , U. , Zhang , Z.C. , and Holtz , F. , 2017 , Experimental study of liquid immiscibility in the Kiruna-type Vergenoeg iron-fluorine deposit, South Africa...
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Journal Article
Published: 01 April 2019
American Mineralogist (2019) 104 (4): 471–484.
... . Geochimica et Cosmochimica Acta , 70 ( 14 ), 3677 – 3688 . Hou , T. , Charlier , B. , Namur , O. , Schütte , P. , Schwarz-Schampera , U. , Zhang , Z. , and Holtz , F. ( 2017 ) Experimental study of liquid immiscibility in the Kiruna-type Vergenoeg iron–fluorine deposit...
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Image
Sketch sections of the different type of fluorite <b>deposits</b>: ( A ) Spoedwel,...
Published: 01 September 2004
Figure 2. Sketch sections of the different type of fluorite deposits: ( A ) Spoedwel, based on a composite for Albert and Spoedwel deposits, after Robb et al. (1994) ; ( B ) Zaaiplaats after Pollard et al. (1989) ; ( C ) Zwartkloof after Pringle (1986) . ( D ) Buffalo after Absolom (1986
Journal Article
Journal: Economic Geology
Published: 01 May 2010
Economic Geology (2010) 105 (3): 641–654.
... for the involvement of deep volatile-rich alkaline magmas for Precambrian IOCG deposits includes the magnitude of brecciation in most IOCG systems and the broad similarity of the breccias pipes and maars at Olympic Dam (Fe-oxide Cu-Au-U-REE) and Vergenoeg (Fe-oxide FREE) with the alkaline magmatic Argyle lamproitic...
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Image
(A) Geology of the Bushveld large igneous province, South Africa ( Lenhard ...
in > Geology
Published: 10 December 2020
Figure 1. (A) Geology of the Bushveld large igneous province, South Africa ( Lenhard and Eriksson, 2012 ). (B) Cross section of the Vergenoeg deposit ( Goff et al., 2004 ) with sample locations and positions of the studied drill-holes KL24 and V6. (C) Cumulus fayalite (Fa), coexisting with rare
Image
Zoning of rare earth elements (REEs), Nb (sample KL24-203 m), and Li in fay...
in > Geology
Published: 10 December 2020
Figure 4. Zoning of rare earth elements (REEs), Nb (sample KL24-203 m), and Li in fayalite from the Vergenoeg deposit, South Africa, with locations of laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) spots (red dots) and atom probe tomography (APT) samples (blue dot
Journal Article
Published: 01 December 2012
South African Journal of Geology (2012) 115 (4): 499–514.
..., mafic pegmatoids and syenite ( Gunthorpe and Burger, 1986 ). Another unique deposit, i.e. the Vergenoeg pipe of fayalite-magnetite-fluorite probably represents a Cu-poor variant sited in the centre of the Kaapvaal Craton ( Goff et al. 2004 ). This array of unique deposits suggests that the SCLM under...
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Journal Article
Published: 01 July 2007
Exploration and Mining Geology (2007) 16 (3-4): 159–186.
... that low Ti magnetite is not a unique feature of IOCG deposits, but also characterizes some other types of hydrothermal mineralization. In British Columbia these include some alkalic porphyry-related magnetite-apatite veins in the Quesnel Terrane, as well as the well-known Wrangellia-hosted Fe skarn...
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Journal Article
Published: 01 October 2001
American Mineralogist (2001) 86 (10): 1143–1150.
... of its abundant fluorite, the Vergenoeg deposit is related to granites containing fayalite, fluorite, apatite, ilmenite, and magnetite, and is similar to massive iron deposits as Kiruna and Cerro Mercado ( Borrok at al. 1998 ). Furthemore, based on isotope and fluid inclusion data on fluorite from...
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Journal Article
Published: 01 March 2002
South African Journal of Geology (2002) 105 (1): 51–66.
... reveals that the average thickness of the Middle Unit is ~17m (max. ~46m in the Vergenoeg area). The average thickness of the arenaceous deposits is ~7m, whereas the argillaceous strata are ~10m thick on average. Figure 8 shows the sand:mud ratio of the Middle Unit, which is ~ 2:3. According...
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Journal Article
Journal: Elements
Published: 01 January 2005
Elements (2005) 1 (1): 13–18.
... RH , Essene EJ ( 1998 ) The Vergenoeg magnetite-fluorite deposit, South Africa; support for a hydrothermal model for massive iron oxide deposits . Economic Geology 93 : 564 – 586 Breeding CM , Ague JJ ( 2002 ) Slab-derived fluids and quartz-vein formation...
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Journal Article
Journal: Economic Geology
Published: 01 August 2000
Economic Geology (2000) 95 (5): 1067–1089.
... in this study have implications for understanding the genesis of Fe oxide Cu-Au deposits and related sodic-calcic alteration. The study indicates the potential for CO 2 -rich granitoid magmas to evolve hypersaline, Fe- and Cu-rich fluids capable of causing intense magnetite veining and Cu(-Au?) mineralization...
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