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Monastery Pipe

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Journal Article
Published: 01 September 2009
South African Journal of Geology (2009) 112 (2): 125–140.
...) with Monastery virtually the sole root-zone dyke/small-pipe association. The Kimberley cluster contains the Kimberley, De Beers, Bultfontein, Dutoitspan, Wesselton and Kamfersdam pipes. Subsequent to the eruption of the Karoo flood basalts around 183 Ma ( Duncan et al., 1997 ), the geological history...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2003
DOI: 10.1144/GSL.SP.2003.220.01.14
EISBN: 9781862394681
... and megacrysts were 40 Ar/ 39 Ar dated using the ultraviolet laser ablation microprobe (UVLAMP) technique. Fifteen southern African samples were analysed from the following diamond- bearing kimberlite pipes within the Kaapvaal craton: De Beers, Bultfontein, Kamfersdam and Monastery in South Africa, and Letseng...
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Comparative analysis for water in olivines ( a ), orthopyroxenes ( b ), gar...
Published: 01 April 2014
and xenoliths of harzburgites and spinel and garnet lherzolites and Japanese, German, Australian, and USA basalts ( Kurosawa et al., 1997 ); xenoliths from the South African Monastery and Kimberley kimberlite pipes ( Miller et al., 1987 ); peridotite xenoliths from South African kimberlite pipes ( Grant et al
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Electron microprobe compositions of ilmenite. (a) MgO  versus  Cr 2 O 3  (w...
Published: 08 April 2020
Fig. 6. Electron microprobe compositions of ilmenite. (a) MgO versus Cr 2 O 3 (wt.%). (b) Cr 2 O 3 versus Nb 2 O 5 (wt.%) for Certac ilmenite macrocrysts and nodules with the main fields for ilmenite from Kirkland Lake pipes C-14 and A-1 (solid boundary; Schulze et al . 1995
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Cooling of weighted mean path through 70 °C for Mesozoic kimberlites and ig...
Published: 30 January 2020
of the Kaapvaal craton. Only samples with AHe dates younger than eruption are plotted, because pipes that yield AHe dates coincident with pipe eruption do not record the erosion event owing to pipe emplacement after unroofing occurred. Samples from west to east: Stolzenfels, Schuitdrift, Rietfontein, SA13-31
Journal Article
Published: 01 November 2018
European Journal of Mineralogy (2018) 30 (6): 1083–1094.
... the content of MgO remains virtually constant. The Ilm nodules from the same pipe, although showing discrete zoning in MgO and Fe 2 O 3 , are found to have homogeneous Cr 2 O 3 contents. Ilmenite from the Monastery pipe (South Africa) can be divided into three groups (according to Moore et al ., 1992...
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( A ) Overview map showing different geological domains around Lesotho and ...
Published: 01 December 2013
Figure 2 ( A ) Overview map showing different geological domains around Lesotho and some kimberlite locations (modified after Griffin et al., 1979 ; Schmitz and Bowring, 2004 ). From North to South: Kaapvaal craton, Tugela terrane, Mzumbe terrane and Margate terrane. (1) Monastery Mine; (2
Journal Article
Published: 01 December 2014
South African Journal of Geology (2014) 117 (2): 219–236.
... an ultra-deep, sub-lithospheric origin, have been described from numerous localities with a world-wide geographic distribution. Majorite garnet inclusions in diamonds were first reported from the Monastery kimberlite pipe, South Africa by R.O. Moore and Gurney (1985) . This phase and a variety of other...
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Journal Article
Published: 01 December 2008
South African Journal of Geology (2008) 111 (4): 462–464.
... J.J. , Jacob W.R.O. and Dawson , J.B. ( 1979 ). Megacrysts from the Monastery kimberlite pipe, South Africa . In: R.F. Boyd and H.A.O. Meyer (Editors), Proceedings of the 2nd International Kimberlite Conference , American Geophysical Union , 2 , 227 – 243...
Journal Article
Published: 01 March 2001
South African Journal of Geology (2001) 104 (1): 23–38.
... ), and also appear to linked to the potential for diamond preservation ( Gurney and Zweistra, 1995 ). Monastery is unfortunately the only pipe in the Lesotho cluster for which detailed chemistry for this phase is available ( Moore et al. 1992 ; Griffin et al., 1997 ). Ilmenite data are therefore...
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Journal Article
Published: 01 March 2009
South African Journal of Geology (2009) 112 (1): 23–38.
.... Megacrysts from individual localities crystallised isobarically across a wide temperature range, although the pressure of formation may vary from one pipe to another ( e.g. 45Kb at Monastery, Gurney et al ., 1979 ; 51 Kb at Jagersfontein ( Hops et al. , 1992 ); 57Kb at the Hamilton Branch pipe, USA...
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Journal Article
Published: 01 September 2005
South African Journal of Geology (2005) 108 (2): 233–246.
... variations in upper mantle nodules from southern African kimberlites . Philosophical Transactions of the Royal Society London , A297 , 273 – 293 . Gurney J.J. , Jakob W.R.O. and Dawson J.B. ( 1979 ). Megacrysts from the Monastery kimberlite pipe, South Africa . In: F. R. Boyd...
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Journal Article
Published: 08 April 2020
The Canadian Mineralogist (2020) 58 (2): 267–286.
...Fig. 6. Electron microprobe compositions of ilmenite. (a) MgO versus Cr 2 O 3 (wt.%). (b) Cr 2 O 3 versus Nb 2 O 5 (wt.%) for Certac ilmenite macrocrysts and nodules with the main fields for ilmenite from Kirkland Lake pipes C-14 and A-1 (solid boundary; Schulze et al . 1995...
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Journal Article
Published: 01 June 2004
South African Journal of Geology (2004) 107 (1-2): 59–80.
... relationship between Cr and Mg# in megacryst garnets is illustrated in Figure 2 by the suite from the Monastery kimberlite. The trend consists of two sections, a high Mg# section reflecting co-precipitation with olivine, clinopyroxene and orthopyroxene, separated by a break in slope from a low Mg# section...
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Journal Article
Published: 01 June 2004
South African Journal of Geology (2004) 107 (1-2): 285–300.
... suite from the Monastery kimberlite pipe . Unpublished M.Sc. thesis, University of Cape Town , South Africa , 81 pp. Janney , P. E. , Carlson , R.W. , Shirey , S. B. , Bell , D. R. and Le Roex , A. P. ( 1999 ). Temperature, pressure and Re-Os age systematics of peridotite...
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Journal Article
Published: 01 October 2018
Russ. Geol. Geophys. (2018) 59 (10): 1254–1270.
.... , 2010 . Composition of the lithospheric mantle in the Siberian Craton: new constraints from fresh peridotites in the Udachnaya–East kimberlite . J. Petrol. 51 , 2177 – 2210 . Jakob , W.R.O. , 1977 . Geochemical aspects of the megacryst suite from the Monastery kimberlite pipe . M.S...
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Six hypabyssal kimberlite textures. ( A ) Segregations of serpentine (srp) ...
Published: 01 December 2019
phenocrysts and macrocrysts of mica and olivine (oliv) in the Buffelboudfontein kimberlite (South Africa). ( D ) Groundmass rich in monticellite (mtc), from Pipe 1 at Koskenniemi (Finland). ( E ) Mica microphenocrysts with black spinel (spl) and brown perovskite (pvk) in the Monastery kimberlite (South Africa
Journal Article
Published: 01 December 2007
South African Journal of Geology (2007) 110 (4): 597–610.
... , Lesotho , 238 – 253 . Gurney , J.J. , Jakob , W.R.O. and Dawson , J.B. ( 1979 ). Megacrysts from the Monastery Kimberlite Pipe, South Africa . In: F.R. Boyd and H.O.A. Meyer (Editors) Kimberlites, diatremes and diamonds; their geology, petrology and geochemistry...
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Journal Article
Published: 01 June 2004
South African Journal of Geology (2004) 107 (1-2): 81–90.
...Richard W. Carlson; Rory O. Moore Abstract New whole rock chemical and Re-Os isotopic analyses of peridotite xenoliths from the Monastery kimberlite show the majority of the samples to have the low Fe, Al and Ca, and high MgO contents typical of magmaphile-element depleted cratonic lithospheric...
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Journal Article
Journal: Economic Geology
Published: 01 May 2014
Economic Geology (2014) 109 (3): 775–783.
... , The interpretation of the major element compositions of mantle minerals in diamond exploration : Journal of Geochemical Exploration , v. 53 , p. 293 – 309 . Gurney J.J. Jakob W.R.O. Dawson J.B. , 1979 , Megacrysts from the Monastery kimberlite pipe, South Africa , in Boyd F.R. Meyer...
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