 | | Journal (article/letter/editorial) | | 68, pages 494-505, 1983 Lindsleyite (Ba) and mathiasite (K): two new chromium-titanates in the crichtonite...Geochemistry University of Cape Town, Republic of South Africa arro R. V. DnNcurrq2 Anglo-American Corporation...ResearchLaboratory Crown Mines, Johannesburg, Republic of South Africa Abstract Two new opaquemineralsare describedfrom...1.037nm, c = 2.052nm, V : l.9ll nm3, and for mathiasite are a = 1.035nm, c : 2.058 nm, V = 1.909nm3....anisotropy. Spectral reflectancesfor lindsleyite and mathiasite are very similar and are comparable to ilmenite |  | | Report (issue) | | Mathiasite (K, Ca, Sr)(Ti, Cr, Fe, Mg)21O38 c 2001-2005 Mineral Data Publishing, version 1 Crystal...10.361 c = 20.65 Z=3 X-ray Powder Pattern: South Africa. 2.14 (100), 1.44 (100), 2.25 (90), 2.99 (80)...05 ThO2 0.01 (1) Jagersfontein, Bultfontein, and Kolonkwanen kimberlites, South Africa; by electron microprobe...concentrates from metasomatized kimberlite (South Africa). Association: Lindsleyite, olivine, diopside...titanite (South Africa); yimengite (Shandong Province, China). Distribution: From the Jagersfontein diamond |  | | Report (issue) | | SURVEY OF SOUTH AFRICA COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA MINERALOGY OF SOUTH AFRICA:... COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA Scientific Editor R.D. Dixon Linguistic and...Council for Geoscience (Geological Survey of South Africa), 280 Pretoria Street, Silverton, Pretoria or........................... 69 5.1 Overview of South African Occurrences ..............................LAYEREDSUITE,BUSHVELDCOMPLEX.... 111 MINERALOGY OF SOUTH AFRICA: TYPE-MINERAL SPECIES AND TYPE-MINERAL NAMES |  | Giuliani, Andrea, Woodhead, Jon D., Phillips, David, Maas, Roland, Davies, Gareth R., Griffin, William L. (2018) Titanates of the lindsleyite–mathiasite (LIMA) group reveal isotope disequilibrium associated with metasomatism in the mantle beneath Kimberley (South Africa) Earth and Planetary Science Letters, 482. 253-264 doi:10.1016/j.epsl.2017.11.014 | Journal (article/letter/editorial) | | com/locate/epsl Titanates of the lindsleyite–mathiasite (LIMA) group reveal isotope disequilibrium associated...metasomatism in the mantle beneath Kimberley (South Africa) Andrea Giuliani a,b,c,∗ , Jon D. Woodhead d...heterogeneity between coeval Ti-rich LIMA (lindsleyite–mathiasite) minerals at the time of their formation in the...xenoliths from the ∼84 Ma Bultfontein kimberlite (South Africa). Previous U/Pb dating of the LIMA phases was...been assumed previously. Simple modelling of solid-state diffusion in mantle minerals shows that isotopic |  | | Journal (article/letter/editorial) | | 1990 Silicate-bearingrutile-dominatednodulesfrom South African kimberlites: Metasomatizedcumulates DaNrrr...Kampfersdam and Jagersfonteinkimberlite pipes in South Africa contain euhedral olivines and spinels,graphic... armalcolite, and members of the lindsleyite-mathiasite group (LIMA) have been proposedas indicators...Tollo and Haggerty,1987),and Jagersfontein and Kampfersdam in South Africa (Haggerty, 1983; Schulze,1983;...nodules from the Jagersfonteinkimberlite in South Africa, eachof which contains graphic interyrowths |  | | Journal (article/letter/editorial) | | diamondiferous district, Siberian craton) is the worldwide renowned primary diamond mine, which carries...xenoliths carried out by kimberlite magmas in South Africa (Haggerty 1975, 1983, 1988, 1989; Jones et al...the central part of the Udachnaya-East open-pit mine at the depth interval 620–640 m. The xenolith is...compositions of magnetoplumbite-group minerals from South Africa (Haggerty et al. 1989), China (Dong et al. 1984;...0.500 0.470 0.012 0.022 13.439 1.004 LIMA (South Africa) K Figure 6. A-site occupancy of the studied |  | | Journal (article/letter/editorial) | | chemistry of new titanates from the Jagersfontein kimberlite, South Africa: Implications for metasomatism...the Jagersfontein kimberlite, 130 km SE of the Kimberley diatrcme complex in the Republic of South Africa...R~CKARD, 1977; JONES et al., 1982). Other grains are free of silicate inclusions (e.g. ilmenites and chromites)...opaque mineral oxide assemblages observed at Jagersfontein have not yet been recognized in metasomites...and ERLANKand RICKARD (I977) from De Beers Jagersfontein kimberlite titanates and Bultfontein, respectively |  | Giuliani, Andrea, Phillips, David, Maas, Roland, Woodhead, Jon D., Kendrick, Mark A., Greig, Alan, Armstrong, Richard A., Chew, David, Kamenetsky, Vadim S., Fiorentini, Marco L. (2014) LIMA U–Pb ages link lithospheric mantle metasomatism to Karoo magmatism beneath the Kimberley region, South Africa. Earth and Planetary Science Letters, 401. 132-147 doi:10.1016/j.epsl.2014.05.044 | Journal (article/letter/editorial) | | Karoo magmatism beneath the Kimberley region, South Africa Andrea Giuliani a,∗ , David Phillips a , Roland...The Karoo igneous rocks (174–185 Ma) of southern Africa represent one of the largest continental flood basalt...kimberlites in southern Africa. Here we report U–Pb ages for lindsleyite–mathiasite (LIMA) titanate minerals...the ∼84 Ma Bultfontein kimberlite (Kimberley, South Africa), located in the southern part of the Karoo...et al., 2007). In the Kaapvaal craton (southern Africa; Fig. 1), Re–Os model ages of mantle xenoliths |  | | Journal (article/letter/editorial) | | SPINEL MACROCRYSTS FROM KIMBERLITES IN SOUTHERN AFRICA DANIEL J. SCHULZE§ Department of Geology, University...single-crystal macrocrysts in kimberlites from southern Africa (approximately 1500 grains from 20 kimberlites...from a variety of mantle xenoliths from southern Africa and North America (approximately 150 xenoliths)...with Cr/(Cr + Al) > 0.88 is derived from garnet-free assemblages that have bulk Cr/(Cr + Al) values too...Unusually Fe- and Ni-rich macrocrysts unique to the Lace mine are from Fe-rich orthopyroxene-bearing peridotites |  | | Journal (article/letter/editorial) | | from micaceous kimberlite, Star mine, Orange Free State, South Africa ROGER H. MITCHELL Department of...titanates from micaceous kimberlite (Star mine, S. Africa). These data significantly extend the previously...suite consists of anhedral xenocrysts that are Ba-free. In this suite relatively Nb-rich varieties (>4... priderite, kimberlite, lamproites, Star mine, South Africa. Introduction COMPLEX K - B a - V titanates...recognized in the New Elands micaceous kimberlite, South Africa (Mitchell and Haggerty, 1986) and the Argyle |  | | Journal (article/letter/editorial) | | Upper phlogopite Canada Implications in a mantle Mine derived xenolith of kimberlite, Ontario , Canada:...During a petrological study of the Upper Canada Mine kimberlite dyke, Ontario (Arima et al., 1986a...is exposed in a under ground of the Upper Canada Mine, in the vicin ity of Kirkland Lake, Ontario, Canada...The petrology and mineralogy of the Upper Canada Mine kimberlite has been described by Lee and Lawrence...this area (Fig. 1). The Upper Canada hypabyssal Mine kimberlite is a calcite, to lite sparcely only |  | Haggerty, Stephen E., Grey, Ian E., Madsen, Ian C., Criddle, A. J., Stanley, C. J., Erlank, A. J. (1989) Hawthorneite, Ba[Ti3Cr4Fe4Mg]O19: A new metasomatic magnetoplumbite-type mineral from the upper mantle. American Mineralogist, 74 (5-6) 668-675 | Journal (article/letter/editorial) | | Geochemistry,University of Cape Town, Rondebosch,7700, South Africa AusrRAcr A new opaque mineral oxide is described...diamondiferous kimberlite pipe in Kimberley, South Africa. The new mineral, hawthorneite (- 100 pm in...Ti. . .),rO,n),which coexistswith K-specific mathiasite of the crichtonite group. By contrast, the assemblage...(M) cations in theseminerals and in yimengite + mathiasite are Ti * Cr, with lesserFe, Mg,Zr, and Nb. The...: HAWTHORNEITE INrnotucrroN Lindsleyite and mathiasite have been describedas new minerals in metasomatizedperidotite |  | Barkov, Andrei Y., Fleet, Michael E., Martin, Robert F., Men'shikov, Yuri P. (2006) Sr-Na-REE titanates of the crichtonite group from a fenitized megaxenolith, Khibina alkaline complex, Kola Peninsula, Russia: first occurrence and implications. European Journal of Mineralogy, 18 (4) 493-502 doi:10.1127/0935-1221/2006/0018-0493 | Journal (article/letter/editorial) | | landauite (Na), davidite-(Ce), davidite-(La), mathiasite (K), lindsleyite (Ba), and senaite (Pb). The...by powder-XRD scans. A phlogopite grain is nearly free of Fe and unusually rich in F (ca. 6 wt.%; Barkov...marcasite (both Ti-V-rich and Ti-V-free), chalcopyrite (TiV-free); ferroan alabandite (6.0-7.7 wt.% Fe)...Cr2O3) occur as xenocrysts in the Jagersfontein kimberlite, South Africa (Haggerty, 1983) and in mantle-derived...29 apfu) enters the B site, not the A site, in mathiasite (Gatehouse et al., 1983). The crichtonite-type |  | Rezvukhin, Dmitriy I., Malkovets, Vladimir G., Sharygin, Igor S., Tretiakova, Irina G., Griffin, William L., O'Reilly, Suzanne Y. (2018) Inclusions of crichtonite-group minerals in Cr-pyropes from the Internatsionalnaya kimberlite pipe, Siberian Craton: Crystal chemistry, parageneses and relationships to mantle metasomatism. Lithos, 308. 181-195 doi:10.1016/j.lithos.2018.02.026 | Journal (article/letter/editorial) | | RAS, Novosibirsk, 630090, Russia c Novosibirsk State University, Novosibirsk, 630090, Russia SC b ...in terms of mantle petrology. Lindsleyite and mathiasite (LIMA series, Baand K-dominant members of the...heavy-mineral concentrates from 3 ACCEPTED MANUSCRIPT South African kimberlites (Erlank et al., 1987; Giuliani...Karoo volcanism beneath the Kimberley region, South Africa. The metasomatic CE origin of Cr-pyrope in...shows slight variations which probably reflect local (diffusional?) heterogeneities governed by the position |  | Rezvukhin, D. I., Malkovets, V. G., Sharygin, I. S., Kuzmin, D. V., Gibsher, A. A., Litasov, K. D., Pokhilenko, N. P., Sobolev, N. V. (2016) Inclusions of crichtonite group minerals in pyropes from the Internatsionalnaya kimberlite pipe, Yakutia. Doklady Earth Sciences, 466 (2) 206-209 doi:10.1134/s1028334x16020227 | Journal (article/letter/editorial) | | minerals of the LIMA series from kimberlites of South Africa, whereas the average concentrations of Ba and...are related to the LIMA series (lindsleyite– mathiasite, members of the group with Ba and K as predominant...concentrate of kimberlites from South Africa (De Beers, Jagersfontein, Kolonkwanen, Bultfontein, and ...Okayama University, Misasa, Japan c Novosibirsk State University, Novosibirsk, Russia email: m.rezvukhin@gmail...crichtonite group minerals in xenogenic material of South African kimberlites, findings of these minerals |  | | Journal (article/letter/editorial) | | were measured on regions of the samplesthat were free of fractures, inclu- VLASSOPOULOS ET AL.: H AND...JAG83-30 Namibia Pomfret, VT Jagersfontein,South Africa Jagerstontein,South Africa JAG85-2 "Pure" Al-doped...rutile-dominated xenolith from the Jagersfontein kimberlite, South Africa. Calculation of H concentrationin...Mantlederived Nb- and Cr-rich rutile from South African kimberlites (Jagersfontein),JAG83-30-3 and JAG85-2. (1991)determinedeo"...necessarilyimply the absence coordination and oxidation state in rutile is that Nb preof this cation. H insertion |  | | Journal (article/letter/editorial) | | synthesis of priderite and members of the lindsleyite-mathiasite and hawthorneite-yimengite series Received:...alkali-titanate mineral series priderite, lindsleyite-mathiasite (LIMA) and hawthorneite-yimengite (HAWYIM) confirm...1988). Priderites containing iron in the ferrous state were therefore included as p a r t of this study...h a w t h o r n e i t e f r o m s o u t h e r n Africa (Hagg e t t y et al. 1989) to 150 k m for Venezuelan...using the following constraints. Lindsleyite-mathiasite: (i) Fe is present as Fe 3+, (ii) all cations |  | | Journal (article/letter/editorial) | | calcite. A Ba-dominant member of the lindsleyite± mathiasite (LIMA) series was found as a single grain intergrown...Ti-oxides from sample B9297. LIMA lindsleyite±mathiasite phase; arm (?) possible Cr±Zr-armalcolite TiO2...LIMA from B9297 is comparable to that from Jagersfontein and the Kimberley cluster of kimberlites (Jones...that the pre-K-metasomatic assemblage was garnet-free. This would be consistent with the very low Al-content... Barrett DR (1975) Rb-Sr age determinations of South African kimberlites. Phys Chem Earth 9: 605±617 |  | | Journal (article/letter/editorial) | | the analogousBa and K end members(lindsleflte, mathiasite respectively)basedon a bimodal light and heavy...Haggertyet al. (1983).These are lindsleyite and mathiasite,the Ba and K membersof the AMrrO3s series,where...with loveringite, the apparent bimodal REE in mathiasite and lindsleyite were interpreted to indicate...in color with a uniform luster, and was optically free from its original phlogopite host. Physical and...be 1.6% total counts, by counting rorce in the Ce-free La standard. The tTsYb interference was negligible |  | | Journal (article/letter/editorial) | | xenoliths from the Bultfontein kimberlites, South Africa: implication for low bulk-rock oxygen isotopic...xenoliths from the Bultfontein kimberlites, South Africa, contain abundant ilmenites (30% in BD2666,...Geochemistry, University of Cape Town, Rondebosch 7700, South Africa Editorial responsibility: T.L. Grove invasion...homogeneous high-Ti silicate melt. Keywords South Africa á Polymict xenolith á Oxide mineral á Ilmenite...armalcolite and exotic oxides, such as lindsleyite-mathiasite (LIMA) and yimengitehawthorneite (YIHA; e.g. |  | | Journal (article/letter/editorial) | | these components relative to the premetasomatic state, depending on whether these mobile components were...Murthy 1980a), or whether metasomatism is a more local phenomenon of relatively small volume that is related...Carios, Arizona (Frey & Prinz 1978); ATQ � Ataq, South Yemen (Menzies & Murthy 1980b). Paul's Rocks, equatorial...peridotite inclu sions from Bultfontein Mine, South Africa, contain a Ca-Zr-Cr-titanate and a Ba- and...described from the Bultfontein, Jagersfontein, and De Beers (all South Africa) kimberlites (Haggerty et al |  | | Journal (article/letter/editorial) | | geological setting and kimberlites of the Udachnaya mine (Daldyn field, Yakutian diamondiferous province...spectroscopic (EDS) system equipped with a liquid nitrogen-free XMax-80 Silicon Drift Detector (Oxford Instruments...UV-13-233 was picked in the Udachnaya-East open-pit mine from a volcanoclastic partially serpentinized kimberlite...the B site analogues of lindsleyite (Ba) and mathiasite (K), whereas within the interstitial oxide intergrowths...[42]. Apart from the type findings in the Red Ledge mine, California, USA [43–48], there are very few reports |  | | Journal (article/letter/editorial) | | and a Ti-Cr-Fe-Mg-Sr-K phase of the lindsleyite-mathiasite (LIMA) series. The eclogitic inclusion suite...from the central part of the Kaapvaal craton in South Africa, eclogitic diamonds are in the majority in the...mining in South Africa (Williams, 1932). In a detailed study of diamonds from the main South African pipes...of omphacite inclusions in diamonds from both South Africa and Siberia. Table 4 Compositions of chromite...with eclogitic diamond-inclusion garnets from South Africa (O’Reilly and Griffin, 1995; Griffin and Gurney |  | | Journal (article/letter/editorial) | | km (where T » 800 °C and P 30 kbar) along the local geotherm. In addition to previously reported inclusions...al. 1976). The Garnet Ridge humites are almost F-free. Crichtonite series Minerals of crichtonite series...senaite; REE, davidite; Ba, lindsleyite; and K, mathiasite (Rouse and Peacor 1968; Grey et al. 1976; Gatehouse...association are predominantly lindsleyite and mathiasite (LIMA), which contain signi®cant Sr, Ca, Na and...McDonough and Sun 1995). Compared to those from South Africa kimberlite (e.g., Haggerty 1983, 1991a; Schulze |  | | Journal (article/letter/editorial) | | armalcolite paragenesis. Such Ti-rich veins cause strong local enrichment in some incompatible trace elements,...Tompkins, 1984) and thus constrain the oxidation state of the latest metasomatic events 1. INTRODUCTION...identified in phlogopite-richterite peridotites from south African kimberlites, that are genetically related...the Kerguelen oceanic plateau originated in the South East Indian Ridge (SEIR) and was originally attached...stabilization of the oceanic lithosphere in the South East Indian Ridge; and reaction of the resultant |
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