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Roberts-Victor Mine

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(A) Roberts Victor Mine (South Africa) CROL dike—blow—pipe system. Re-drawn after Wagner (1914), Gurney and Kirkley (1996) and de Wit et al. (2016). Bobbejaan Mine (Bellsbank area, South Africa), CROL en-echelon dike system. Adapted and re-drawn from Clement et al. (1973). Note there is diamond grade and rough diamond value variation between the pipes, blows and dikes in (A) and the dike lenses shown in (B).

( A ) Roberts Victor Mine (South Africa) CROL dike—blow—pipe system. Re-dra... Open Access

Published: 01 July 2022
Figure 12. ( A ) Roberts Victor Mine (South Africa) CROL dike—blow—pipe system. Re-drawn after Wagner (1914) , Gurney and Kirkley (1996) and de Wit et al. (2016) . Bobbejaan Mine (Bellsbank area, South Africa), CROL en-echelon dike system. Adapted and re-drawn from Clement et al. (1973
Journal Article

Origin of some eclogite inclusions in kimberlite Available to Purchase

Ikuo Kushiro, Ken-ichiro Aoki
Published: 01 August 1968
American Mineralogist (1968) 53 (7-8): 1347–1367.
...Ikuo Kushiro; Ken-ichiro Aoki Abstract Of six eclogite inclusions in kimberlite of Roberts-Victor mine near Kimberley, South Africa, three are essentially bimineralic eclogites consisting of clinopyroxene and pyrope-rich garnet, and others contain phlogopite in addition to clinopyroxene and garnet...
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Polarized IR spectra of omphacite from an eclogite xenolith in kimberlite, Roberts Victor Mine, South Africa, normalized to 1 mm thickness. Modified after Skogby et al. (1990).

Polarized IR spectra of omphacite from an eclogite xenolith in kimberlite, ... Available to Purchase

Published: 01 January 2006
Figure 4. Polarized IR spectra of omphacite from an eclogite xenolith in kimberlite, Roberts Victor Mine, South Africa, normalized to 1 mm thickness. Modified after Skogby et al. (1990) .
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Stacked VNIR-SWIR reflectance spectra of garnet minerals in kimberlite exploration. (1) G-10 garnet from Roberts Victor Mine, South Africa; (2) G-10 garnet from Tanzania; (3) G-9 garnet from Tanzania; (4) G-9 garnet from Kirkland Lake, Canada; (5) G-5 garnet from Tanzania; and (6) G-1/G-2 garnet from Jagersfontein, South Africa. Samples obtained from Dan Schulze (University of Toronto, numbers 1 and 4) and Bruce Kjarsgaard(GSC, numbers 2,3,5, and 6) (after Hauff and Percival, 2006).

Stacked VNIR-SWIR reflectance spectra of garnet minerals in kimberlite expl... Available to Purchase

Published: 01 July 2018
Figure 3. Stacked VNIR-SWIR reflectance spectra of garnet minerals in kimberlite exploration. (1) G-10 garnet from Roberts Victor Mine, South Africa; (2) G-10 garnet from Tanzania; (3) G-9 garnet from Tanzania; (4) G-9 garnet from Kirkland Lake, Canada; (5) G-5 garnet from Tanzania; and (6) G-1/G
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Comparison of chondrite-normalized rare-earth element (REE) patterns for garnets: (a) exsolved in Kaapvaal orthopyroxene megacryst BD3636/1 with: (b) from Sierra Nevada peridotites (Chin et al., 2012); (c) with ultra-depleted CaO contents found at Lashaine, Tanzania (Gibson et al., 2013); (d) and (e) present in peridotitic diamond inclusions from Kankan, Yakutia and Roberts Victor mine (Stachel et al., 1998, 2000; Taylor et al., 2003); and (f) with REE patterns akin to those typical of lherzolite and harzburgite paragenesis (Stachel and Harris, 2008). The former have flat middle-to-heavy REE patterns while the latter are distinguished by their sinusoidal patterns.

Comparison of chondrite-normalized rare-earth element ( REE ) patterns for ... Open Access

Published: 01 August 2017
et al. , 2013 ); ( d ) and ( e ) present in peridotitic diamond inclusions from Kankan, Yakutia and Roberts Victor mine ( Stachel et al. , 1998 , 2000; Taylor et al. , 2003 ); and ( f ) with REE patterns akin to those typical of lherzolite and harzburgite paragenesis ( Stachel and Harris, 2008
Journal Article

Edward J. Baltrusaitis (1910-1996) Available to Purchase

John M. Andrichuk
Journal: AAPG Bulletin
Published: 01 January 1997
AAPG Bulletin (1997) 81 (1): 168–169.
...John M. Andrichuk Abstract Edward J. Baltrusaitis was born in Pittsburgh, Pennsylvania, on December 5, 1910, and in 1934 he graduated with a Bachelor of Science degree in mining engineering from the Carnegie Institute of Technology. After odd jobs and working as a surveyor for the U. S. Corps...
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Crystal chemistry of clinopyroxenes from mantle eclogites: A study of the key role of the M2 site population by means of crystal-structure refinement Available to Purchase

Roberta Oberti, Florie A. Caporuscio
Published: 01 August 1991
American Mineralogist (1991) 76 (7-8): 1141–1152.
...Roberta Oberti; Florie A. Caporuscio Abstract Single-crystal X-ray structure refinements of a series of geochemically well-characteized clinopyroxenes from grospydite and eclogite xenoliths from the Roberts Victor and Bobbejaan diamond mines, South Africa, have been carried out. The study was done...
View PDF for article title, Crystal chemistry of clinopyroxenes from mantle eclogites: A study of the key role of the M2 site population by means of crystal-structure refinement
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Journal Article

Sulfides in eclogite nodules from a kimberlite pipe, South Africa, with comments on violarite stoichiometry Available to Purchase

George A. Desborough, Gerald K. Czamanske
Published: 01 April 1973
American Mineralogist (1973) 58 (3-4_Part_1): 195–202.
...George A. Desborough; Gerald K. Czamanske Abstract An unusual assemblage composed of four sulfides of Fe, Ni, and Cu occurs in rounded eclogite nodules which were inclusions in the kimberlite pipe at the Roberts Victor diamond mine, 45 miles ene of Kimberley, South Africa. The polymineralic sulfide...
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Ternary diagram of three major components of relevance for the garnets of this study; pyrope (pyr)–almandine (alm)–grossular (gro). This sample suite covers a wider compositional range. Roberts Victor pipe samples are labeled SRV and XM, Bobbejaan mine samples are denoted by SBB.

Ternary diagram of three major components of relevance for the garnets of t... Available to Purchase

Published: 01 May 2019
Fig. 1 Ternary diagram of three major components of relevance for the garnets of this study; pyrope (pyr)–almandine (alm)–grossular (gro). This sample suite covers a wider compositional range. Roberts Victor pipe samples are labeled SRV and XM, Bobbejaan mine samples are denoted by SBB.
Journal Article

Kyanite-bearing eclogite xenoliths from the Udachnaya kimberlite, Siberian craton, Russia Available to Purchase

Ioana-Bogdana Radu, Bertrand Moine, Dmitri Ionov, Andrey Korsakov, Alexander Golovin, Denis Mikhailenko, Jean-Yves Cottin
Published: 01 January 2017
Bulletin de la Société Géologique de France (2017) 188 (1-2): 1–11.
DOI: https://doi.org/10.1051/bsgf/2017008
... P.D. Ilupin L.M. ( 1999 ). – The Siberian lithosphere traverse: mantle terranes and the assembly of the Siberian Craton . – Tectonophysics , 310 , 1–4 , 1 – 35 . Hatton C.J. ( 1978 ). – The geochemistry and origin of xenoliths from the Roberts Victor mine...
View PDF for article title, Kyanite-bearing eclogite xenoliths from the Udachnaya kimberlite, Siberian craton, Russia
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Tomographic image of the lithospheric mantle derived from seismic P-wave data at a depth of 150 km (e.g., James et al. 2001; Fouch et al. 2004). The Kaapvaal and Zimbabwe cratonic blocks and the Limpopo mobile belt (K,L, and Z of inset) collectively comprise the Kaapvaal-Zimbabwe craton. Bold green line indicates the outermost boundary of the Kaapvaal-Zimbabwe craton as defined by the break between Archean and Proterozoic Re-Os ages for peridotite xenoliths (Carlson et al. 1996; Carlson et al. 1999; Janney et al. 2010). Colored squares are diamond mines: red = predominantly eclogitic silicate inclusions (Letlhakane, LE; other abbreviations in caption to Fig. 17) and green squares = predominantly peridotitic silicate inclusions (Roberts Victor, R; other abbreviations in caption to Fig. 17). (Figure and caption used by permission of the American Association for Advancement of Science, from Shirey et al. (2002) Science, Vol. 297, Fig. 1, p. 1634).

Tomographic image of the lithospheric mantle derived from seismic P-wave da... Available to Purchase

Published: 01 January 2013
eclogitic silicate inclusions (Letlhakane, LE; other abbreviations in caption to Fig. 17 ) and green squares = predominantly peridotitic silicate inclusions (Roberts Victor, R; other abbreviations in caption to Fig. 17 ). (Figure and caption used by permission of the American Association for Advancement
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Seismic P-wave tomographic image of lithospheric mantle beneath the Kaapvaal (K) and Zimbabwe (Z) cratons and intervening Limpopo (L) belt (after James et al., 2001; Shirey et al., 2002; Fouch et al., 2004). The north-northwest–trending region of seismically slow mantle at 150 km depth within the diamond stability field matches the surface expression of 2.05 Ga old Bushveld-Molopo magmatism. The similarity in the pattern of silicate inclusion paragenesis, seismic velocity, and Bushveld magmatism rule out the velocity differences as due to the current thermal state of the lithosphere. Consequently, they must be due to compositional effects (Shirey et al., 2002; Fouch et al., 2004). Bold green line indicates the outermost boundary of the Kaapvaal-Zimbabwe cratons as defined by the break between Archean and Proterozoic Re-Os ages on peridotite xenoliths (Carlson et al., 2005). Colored squares represent diamond mines as follows: red = predominantly eclogitic diamonds (Jagersfontein = JA, Jwaneng = JW, Letlhakane = LE, Orapa = O, Premier = P), green = predominantly peridotitic diamonds (Kimberley area mines Bultfontein, De Beers, Dutoitspan, Wesselton termed De Beers Pool = D, Finsch = F, Koffiefontein = KO, Roberts Victor = R, Venetia = V).

Seismic P-wave tomographic image of lithospheric mantle beneath the Kaapvaa... Available to Purchase

Published: 01 May 2010
Pool = D, Finsch = F, Koffiefontein = KO, Roberts Victor = R, Venetia = V).
Journal Article

Water in Natural Mantle Minerals II: Olivine, Garnet and Accessory Minerals Available to Purchase

Anton Beran, Eugen Libowitzky
Published: 01 January 2006
Reviews in Mineralogy and Geochemistry (2006) 62 (1): 169–191.
DOI: https://doi.org/10.2138/rmg.2006.62.8
... an eclogitic xenolith in kimberlite from the Roberts Victor Mine, South Africa. OH groups in kyanites from the Roberts Victor Mine were also reported by Rossman and Smyth (1990) . Beran et al. (1993) detected OH in kyanite from an eclogitic xenolith from the Zagadochnaya kimberlite, Yakutia. Two kyanites...
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Tomographic image of the lithospheric mantle derived from seismic P-wave data at a depth of 150 km (James et al., 2001; James and Fouch, 2002). The color scheme depicts % deviation from an average cratonic lithosphere velocity model. Areal coverage spans the lithospheric mantle of the Kaapvaal (K) and Zimbabwe (Z) cratons and the Limpopo mobile belt (L; see inset, left). Bold green line indicates the outermost boundary of the Archean cratons as defined by a sharp break between Archean and Proterozoic Re-Os ages on peridotite xenoliths (Carlson et al., 1999; Janney et al., 1999; Irvine et al., 2001). The location of diamond mines are shown by colored squares. Red squares are localities whose silicate inclusion in diamond suites are predominately eclogitic (Jagersfontein=JA, Jwaneng=JW, Letlhakane=LE, Orapa=O, Premier =P) and green squares are localities whose silicate inclusion suites are predominately peridotitic (Kimberley area mines of Bultfontein, De Beers, Dutoitspan, and Wesselton termed De Beers Pool=D, Finsch=F, Koffiefontein=KO, Roberts Victor =R, and Venetia=V). Mines located above red-yellowish areas referred to in text as having diamonds derived from seismically slower mantle; mines located above greenish-blue areas referred to in text as having diamonds derived from seismically faster mantle. Reprinted with permission from Shirey, S.B., Harris, J.W., Richardson, S.H., Fouch, M.J., James, D.E., Cartigny, P., Deines, P. and Viljoen, K.S., 2002. Diamond genesis, seismic structure, and evolution of the Kaapvaal-Zimbabwe craton. Science, 297: 1683–1686. Copyright 2002 American Association for the Advancement of Science.

Tomographic image of the lithospheric mantle derived from seismic P-wave da... Available to Purchase

Published: 01 June 2004
inclusion suites are predominately peridotitic (Kimberley area mines of Bultfontein, De Beers, Dutoitspan, and Wesselton termed De Beers Pool=D, Finsch=F, Koffiefontein=KO, Roberts Victor =R, and Venetia=V). Mines located above red-yellowish areas referred to in text as having diamonds derived from
Journal Article

Eclogite xenoliths from the Premier kimberlite, South Africa: geochemical evidence for a subduction origin Available to Purchase

Siyanda Dludla, Anton P. le Roex, John J. Gurney
Published: 01 September 2006
South African Journal of Geology (2006) 109 (3): 353–368.
DOI: https://doi.org/10.2113/gssajg.109.3.353
... and peridotite xenoliths from the Roberts Victor Mine, South Africa. Physics of Earth and Planetary Interiors , 3 , 391 – 397 . MacGregor , I.D. and Manton , W.I. ( 1986 ). Roberts Victor eclogites: ancient oceanic crust. Journal of Geophysical Research , 91 , 14063 – 14079...
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X-site control on rare earth elements in eclogitic garnets – an XRD study Available to Purchase

Flore A. Caporuscio, Roberta Oberti, Joseph R. Smyth
Published: 01 May 2019
European Journal of Mineralogy (2019) 31 (3): 453–463.
DOI: https://doi.org/10.1127/ejm/2019/0031-2828
...Fig. 1 Ternary diagram of three major components of relevance for the garnets of this study; pyrope (pyr)–almandine (alm)–grossular (gro). This sample suite covers a wider compositional range. Roberts Victor pipe samples are labeled SRV and XM, Bobbejaan mine samples are denoted by SBB. ...
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Structural Setting and Shape Analysis of Nickel Sulfide Shoots at the Kambalda Dome, Western Australia: Implications for Deformation and Remobilization Available to Purchase

William E. Stone, Stephen W. Beresford, Nicholas J. Archibald
Journal: Economic Geology
Published: 01 November 2005
Economic Geology (2005) 100 (7): 1441–1455.
DOI: https://doi.org/10.2113/gsecongeo.100.7.1441
... : Canadian Mineralogist , v. 25 , p. 37 – 50 . Cowden , A. , and Roberts , D.E. , 1990 , Komatiite-hosted nickel sulphide deposits, Kambalda : Australian Institute of Mining and Metallurgy Monograph 14 , v. 1 , p. 567 – 582 . Dalstra , H.J. , Bloem , E.J.M. , Ridley , J.R...
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DIAMONDIFEROUS PERIDOTITES FROM OCEANIC PROTOLITHS: CRUSTAL SIGNATURES FROM YAKUTIAN KIMBERLITES Available to Purchase

L.A. Taylor, Z.V. Spetsius, R. Wiesli, M. Spicuzza, J.W. Valley
Published: 01 December 2005
Russ. Geol. Geophys. (2005) 46 (12): 1198–1206.
... . 25. MacGregor , I.D. , and J.L. Carter , The chemistry of clinopyroxene and garnets of eclogite and peridotite xenoliths from the Roberts Victor mine, South Africa , Phys. Earth and Planet. Inter. , 3 , 391 – 397 , 1970 . 26...
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Sub-cratonic crust and upper mantle models based on xenolith suites in kimberlite and nephelinitic diatremes Available to Purchase

J. B. Dawson
Published: 01 November 1977
Journal of the Geological Society (1977) 134 (2): 173–184.
DOI: https://doi.org/10.1144/gsjgs.134.2.0173
... mantle beneath the Colorado Plateau Earth planet Sci Lett 1976 29 107 25 Stockley G. M. Report on the geology of Basutoland 1947 Maseru, Basutoland Government Switzer G. Melson W. G. Partially melted kyanite eclogite from the Roberts Victor Mine, South Africa Smithson...
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Silicate and oxide inclusion characteristics and infra-red absorption analysis of diamonds from the Klipspringer kimberlites, South Africa Available to Purchase

K.J. Westerlund, J.J. Gurney
Published: 01 June 2004
South African Journal of Geology (2004) 107 (1-2): 131–146.
DOI: https://doi.org/10.2113/107.1-2.131
... Society of America, Annual meeting . Session 48 – A129 . Hatton , C.J. ( 1978 ). The geochemistry and origin of xenoliths from the Roberts Victor mine . Unpublished Ph.D. Thesis, University of Cape Town , South Africa , 179 pp. Helmstaedt , H. and Doig , R. ( 1975...
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View PDF for article title, Silicate and oxide inclusion characteristics and infra-red absorption analysis of diamonds from the Klipspringer kimberlites, South Africa
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