 | | Journal (article/letter/editorial) | | Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume–Lithosphere Interactions ANTON...igneous complexes in Damaraland, northwestern Namibia. Lamprophyres, emplaced as late-stage dykes, stocks...WORDS: geochemistry; lamprophyre carbonatite; Namibia; Tristan plume ∗Corresponding author. Telephone:+27-21-650-2921...complexes extend through Damaraland in northwestern Namibia (Fig. 1) and provide an example of the contiguous... 1. Simplified geological map of northwestern Namibia, showing the main outcrop regions of the Etendeka |  | | Book | | Mountainland The Central Northern to Northwest Region including Damaraland The Central Namib Desertand...s Onganja Mine and Surrounding Copper Deposits The South The Pegmatitesin Central Namibia Luderitz and... Encyclopedia of the Mineralsof Namibia 443 Meteorites in Namibia Bibliography Index Photo credits...__ Republic of Namibia The President State House W°Ntdhoek FOREWORD Namibia is endowed with an...from near and far. Fine mineral specimen from Namibia are displayed in all the famous natural science |  | | Journal (article/letter/editorial) | | magmas: implications from natural carbonatites, Namibia B. Bühn Instituto de Geoci^encias, University... Summary Two bimodal carbonatite complexes in Namibia of Cretaceous age are explored as to the presence...liquids, at crustal pressures, are clinopyroxene, perovskite= titanite, melanite, calcite, apatite, spinel...geochemical evolution of low-Si carbonatite bodies in Namibia, and addresses the response of carbonatite compositions...Kalkfeld and Ondurakorume carbonatites in northern Namibia, which are part of the Cretaceous Damaraland Igneous |  | | Journal (issue) | | Sterne und Rosetten • Die Fluorit-Lagerstätte Okorusu in Namibia Die Neufunde aus der Vulkaneifel 2013 • ...Rosetten 41 Neues über die Fluorit-Lagerstätte Okorusu in Namibia 48 Die Jagd auf die grünen Fluorite 62...dieses Foto einer Scheibe vom Vorkommen in Okorusu in Namibia . Wir berichten über Neuigkeiten und Funde...größte zusammenhängende Waldgebiet Deutschlands. Die Region ist Rückzugsgebiet für seltene Tier- und Pflanzenarten...eine Gondel der Materialseilbahn der Sorte-Engel-Mine bei der Siedlung Maarmorilik. Beim Abbau des Marmors |  | | Journal (issue) | | Front cover: Sulfur on Aragonite, 25 cm Cozzodisi mine, Casteltermini, Agrigento, Sicily, Italy. Adalberto...place in the Sardinian mines and the Traversella mine (Piedmont). The second edition of the Catalogue...Marches Region, and the sphalerite, chalcopyrite and various rare sulfosalts from the Bottino mine in Tuscany...exploring the underground workings of an historic gold mine in the Brusson area, Val d' Ayas, western Alps....momentum came from my first visit to the Jeffrey mine in Asbestos, Quebec in 1997. I was fascinated by |  | Chakhmouradian, A. R., Cooper, M. A., Medici, L., Hawthorne, F. C., Adar, F. (2008) FLUORINE-RICH HIBSCHITE FROM SILICOCARBONATITE, AFRIKANDA COMPLEX, RUSSIA: CRYSTAL CHEMISTRY AND CONDITIONS OF CRYSTALLIZATION. The Canadian Mineralogist, 46 (4) 1033-1042 doi:10.3749/canmin.46.4.1033 | Journal (article/letter/editorial) | | minerals (including primary Ca–Fe–Ti garnet, perovskite, titanite and ilmenite). During a systematic...refined previously is spessartine from the Henderson mine in Colorado (Smyth et al. 1990). The data presented...where they form veins and lenticular bodies in perovskite–magnetite-bearing olivinites, melilite olivinites...diopside, magnesiohastingsite, calcite, magnetite, perovskite, titanite and chlorite. Some 50 different accessory...burbankite, ancylite-(Ce), rare-earth- and Nb-rich perovskite, rare-earth-rich zirconolite and calzirtite (Chakhmouradian |  | Amores-Casals, , Melgarejo, , Bambi, , Gonçalves, , Morais, , Manuel, , Neto, , Costanzo, , Molist, (2019) Lamprophyre-Carbonatite Magma Mingling and Subsolidus Processes as Key Controls on Critical Element Concentration in Carbonatites—The Bonga Complex (Angola) Minerals, 9 (10) 601 doi:10.3390/min9100601 | Journal (article/letter/editorial) | | and phoscorites, whereas Nb is concentrated in perovskite within mingled lamprophyres. During subsolidus...the lamprophyric units, perovskite is replaced by secondary Nb-rich perovskite and Nb-rich rutile. REE-bearing...hydrothermal processes. Keywords: Nb; pyrochlore; perovskite; zirconolite; carbonatite; aillikite; alnöite;...the Atlantic, forming part of the Parana-Angola-Namibia alkaline province [78–80]. The Lucapa extensional...calibration standards and lines used for pyrochlore and perovskite were—UO2 (U, Mβ, PETJ), orthoclase (K, Kα, PETJ) |  | | Journal (article/letter/editorial) | | magmatism further north in the Afar southern Yemen region. The carbonatites are spatially linked to the thickened...South America and the minor Etendeka remnant in Namibia once formed a single magmatic province that was...to carbonatitic and lamprophyric magmatism in Namibia (southwest Africa) based on isotope and trace element...AFRICA: Ka= Kalkfeld, Kw=Kwaggaspan, M=Messum, Ok=Okorusu, On=Ondurakorume, Os= Osongombo. Red star and circle...230–225 Ma (Ivanov 2007). In the Anabar uplift region, the flood basalts were removed by erosion revealing |  | Xu, Cheng, Kynicky, Jindrich, Chakhmouradian, Anton R., Campbell, Ian H., Allen, Charlotte M. (2010) Trace-element modeling of the magmatic evolution of rare-earth-rich carbonatite from the Miaoya deposit, Central China. Lithos, 118 (1) 145-155 doi:10.1016/j.lithos.2010.04.003 | Journal (article/letter/editorial) | | framework and tectonic evolution of the Qinling region are given in Meng and Zhang (2000), Ratschbacher...alkali feldspar, fluorapatite, magnetite, ilmenite, perovskite, zircon, ferrocolumbite, Nb-rich rutile, monazite-(Ce)...and Nb-bearing accessory phases (particularly, perovskite). In traceelement distribution diagrams normalized...previously reported only from the Lofdal carbonatite in Namibia (Wall et al., 2008). Bastnäsite-(Ce) and synchysite-(Ce)...magmas: implications from natural carbonatites, Namibia. Mineralogy and Petrology 92, 453–470. C. Xu |  | | Journal (article/letter/editorial) | | Tanzania, and one occurrence in Zambia); (b) Namibia and Angola; (c) Eastern Russia (East Tuva, Enisei...2 6.2 2.7 Sokli 62.9 21.6 34.4 13.5 21.5 27.8 Okorusu 8.2 0.2 2.7 2.7 32.7 4.9 Lueshe 4.4 2.8 64.6 0...recognised, such as the Swartbooisdrift complex, Namibia (Drüppel et al. 2005) and the Gifford Creek ferrocarbonatite...presence of blue– green Na- and K- amphiboles, perovskite, pyrochlore, Figure 16. Folds within dolomite...in millimetres (d) Pyrochlore concentrate, Niobec Mine, Quebec, Canada; scale in millimetres. forming |  | | Journal (article/letter/editorial) | | country rocks of the Kalkfeld carbonatite complex, Namibia. The fluid inclusion population provides a unique...crust-derived complexes (open) in north central Namibia. their host rock composition (Rankin and Le Bas...Dongar, India; Simonetti and Bell, 1995; Okorusu F deposit, Namibia; Van Zijl, 1962), or for alteration of...encountered at the Kalkfeld carbonatite complex (Namibia), where a volatile- and alkali-rich carbonatitic...crust-derived melts on the African continent in northern Namibia (Fig. 1). K⫺Ar age determinations on biotites of |  | | Journal (article/letter/editorial) | | Ti, Nb and Zr oxide minerals (in particular, perovskite, pyrochlore, ilmenite, baddeleyite and zirconolite)...affinity) are complex oxide minerals belonging to the perovskite and ilmenite groups and anion-deficient derivatives...(Fe, Mn, Mg) (Ti, Nb, Fe3+) O3 .Perovskite group: .Primary perovskite/latrappite (Ca, Na, REE) (Ti, Nb...Samoylov (1972) reported up to 6.1 wt.% ZrO2 in perovskite from Gornoozerskiy (Ozernyi) complex, Siberia...and/or Nb-enriched perovskite-group minerals that form overgrowths on primary perovskite under hydrothermal |  | | Journal (article/letter/editorial) | | inclusions have been reported as inclusions in perovskite from a calciocarbonatite intrusion (Kogarko et...thickness of the oceanic crust in the Canary Islands region is of the order of 7 11 km (Bassard 1970) allowing...carbonatites occur exclusively with syenitic rocks at Okorusu, Namibia (Prins 1981), Siilinjarvi, Finland, (Puustinen...Kjarsgaard BA (1991) Na-rich carbonate inclusions in perovskite and calzirtite from the Guli intrusive Ca-carbonatite |  | Chebotarev, Dmitry A., Veksler, Ilya V., Wohlgemuth-Ueberwasser, Cora, Doroshkevich, Anna G., Koch-Müller, Monika (2019) Experimental study of trace element distribution between calcite, fluorite and carbonatitic melt in the system CaCO3 + CaF2 + Na2CO3 ± Ca3(PO4)2 at 100 MPa. Contributions to Mineralogy and Petrology, 174 (1) doi:10.1007/s00410-018-1530-x | Journal (article/letter/editorial) | | crystallization of baddeleyite and Nb-bearing perovskite. Keywords Carbonatites · Distribution coefficients...some accessory minerals such as rutile, apatite, perovskite, and baddeleyite at P–T conditions of the upper... Cc calcite, Fl fluorite, Bd baddeleyite, Pv perovskite Thermo iCAP TQ mass spectrometer at GFZ Potsdam...micrometers) Hf-bearing baddeleyite crystals and perovskite–lueshite solid solution, which are universally... Cc calcite, Fl fluorite, Bd baddeleyite, Pv perovskite runs where calcite and fluorite did not crystallize |  | | Report (issue) | | A fluorite specimen from the Number 1 (Minerva) Mine, Cave-in-Rock subdistrict, Illinois-Kentucky fluorspar...............................................G31 Mine Waste Characteristics.........................................................................G36 Mine Closure...........................................a fluorite specimen from the Number 1 (Minerva) Mine, Cave-in-Rock subdistrict, Illinois-Kentucky fluorspar...Selected examples of the chemistry and mineralogy of mine waste generated at fluorspar mines............. |  | Chakhmouradian, A. R., Mitchell, R. H., Burns, P. C., Mikhailova, Y., Reguir, E. P. (2008) Marianoite, a new member of the cuspidine group from the Prarie Lake siliconcarbonatite, Ontario. The Canadian Mineralogist, 46 (4) 1023-1032 doi:10.3749/canmin.46.4.1023 | Journal (article/letter/editorial) | | Science Centre, 14 Fersman Street, Apatity, Murmansk Region 184200, Russia Ekaterina P. REGUIR Department...Although generally not as abundant as pyrochlore or perovskite, Nb- and Zr-rich members of the cuspidine group...tentatively identified in calcite carbonatite from Okorusu in Namibia (A.N. Mariano, pers. commun.). Nomenclature |  | | Book (edition) | | localities as inclusions in the limestone”’ (italics mine). Actually, the first published description of...carbonatite dikes cutting the kimberlite of the Premier mine (p. 542) he classed as magmatic, but 1 Bowen admitted...eucolite; RE phosphates (britholite, belovite), perovskite Sphene, ilmenite, rutile, Ti-magnetite, zircon...CARBONATITES titanian augite or aegirine-augite; perovskite is commonly accessory. Jacupirangite is one of...increase in such species as magnetite, ilmenite, perovskite, and apatite both alkalic and nonalkalic pyroxenites |  | | Book | | relationship to beneficiation problems at Okorusu, Namibia Hagni, RD 297 Ore microscopic study of copper...losses from mining of bornite ores in the Sweetwater Mine, Viburnum Trend, Southeast Missouri Hagni, RD 307...oxidation and mobilization of arsenic in the Ketza River mine tailings Paktunc, D, Thibault, Y, and Weisener,... Understanding micro-environment development in mine tailings using MLA and image analysis Redwan, M...iron-rich sediments of Benavi Area in Kurdistan Region – Northern Iraq Yassin, AT and Mahmoud, MM 781 |  | Johnson, Clark M., Bell, Keith, Beard, Brian L., Shultis, Aaron I. (2010) Iron isotope compositions of carbonatites record melt generation, crystallization, and late-stage volatile-transport processes. Mineralogy and Petrology, 98 (1) 91-110 doi:10.1007/s00710-009-0055-4 | Journal (article/letter/editorial) | | sulfides from ferrocarbonatite from Swartbooisdrift, Namibia (Drueppel et al. 2006). Pertinent to this survey...associated with the Kalkfeld carbonatite complex, Namibia, showed that virtually all alkali metals and Cl...Same as Panda? Dolomitic dikes. Dicker Willem, Namibia 49±1 Sövite and alvikite. Silicate rocks: Ijolite...pyroxene, biotite, phlogopite, melilite, nepheline, perovskite, pyrite, monticellite, and actinolite. Because...Hill, Tanzania Sengeri Hill WR Dicker Willem, Namibia 5–15 Mt 5053 A-1 A-2 A-3 δ57Fe 0.01±0.03 0 |  | | Journal (issue) | | Vishnevye Mts. in the Urals, a famous pegmatite region about 100 km south of Ekaterinberg, were purchased...exploration potential that exists in the surrounding region. Historical background Archaeologically, nephrite...were promoted as the principle nephrite-producing region for the Soviet Bloc countries and this appears...structural high and the oldest tectonic element in the region. These Precambrian rocks are unconformably overlain...rocks underlie an area of almost 100 km 2 in the region and host economically important mineral deposits |  | Pirajno, Franco, González-Álvarez, Ignacio, Chen, Wei, Kyser, Kurt T., Simonetti, Antonio, Leduc, Evelyne, leGras, Monica (2014) The Gifford Creek Ferrocarbonatite Complex, Gascoyne Province, Western Australia: Associated fenitic alteration and a putative link with the ~1075Ma Warakurna LIP. Lithos, 202. 100-119 doi:10.1016/j.lithos.2014.05.012 | Journal (article/letter/editorial) | | Shawa and Gunga (Zimbabwe), Okorusu, Kalkfeld and Ondurakorume (Namibia), the giant Bayan Obo (China)...arfvedsonite–riebeckite, with variable proportions of perovskite, pyrochlore, ferrocolumbite, phlogopite,calcite...fenites are recorded from the Messum Complex in Namibia, where Mathias (1956) noted rocks that were completely...River Fault, a major NW-trending structure in the region, which a recent seismic survey across the Gascoyne...(eds) Phoscorites and Carbonatites from mantle to mine: the key example of the Kola Alkaline Province. |  | | Journal (article/letter/editorial) | | complex in western India near the Chhota Udepur region is intrusive into basalts of the Deccan Volcanic...complex in western India near the Chhota Udepur region is intrusive into basalts of the Deccan Volcanic...small exposures seen allthe around thePetrographic region. PetAmbadungar village,village, whereaswhereas...whereaswhereas small exposures are seen are all around region. rographic and geochemical characteristics of alkaline...Manka-Nakhal-Saidivasan region, consisting of particularly in and around the around Manka-Nakhal-Saidivasan region, consisting |  | Doroshkevich, Anna G., Veksler, Ilya V., Klemd, Reiner, Khromova, Elena A., Izbrodin, Ivan A. (2017) Trace-element composition of minerals and rocks in the Belaya Zima carbonatite complex (Russia): Implications for the mechanisms of magma evolution and carbonatite formation. Lithos, 284. 91-108 doi:10.1016/j.lithos.2017.04.003 | Journal (article/letter/editorial) | | river Zima in the Tulun district of the Irkutsk region in southern Siberia. The Belaya Zima carbonatites...silicates, CaO for the carbonates, pyrochlore, perovskite and phosphates, FeO for magnetite and hematite...% and contains variable amounts of magnetite, perovskite, garnet, titanite, amphibole, fluorapatite, phlogopite...characteristic feature of the rock is the presence of perovskite crystals rimmed by garnet, which in turn is rimmed...from the carbonatites (Fig. 5, Table 5). SC R Perovskite is strongly enriched in LREE and has high concentrations |  | Krebs, M.Y., Pearson, D.G., Stachel, T., Laiginhas, F., Woodland, S., Chinn, I., Kong, J. (2019) A common parentage-low abundance trace element data of gem diamonds reveals similar fluids to fibrous diamonds. Lithos, 324. 356-370 doi:10.1016/j.lithos.2018.11.025 | Journal (article/letter/editorial) | | data from high-purity gem diamonds from the Victor Mine, Ontario, Canada as well as near- gem diamonds from...Diamond; Laser ablation; diamond HDFs; Victor diamond mine ACCEPTED MANUSCRIPT 1. Introduction Diamond crystallizes...(trapped as invisible nano-inclusions) from the Victor Mine, Ontario, Canada, as well as for near-gem diamonds...The majority of samples originate from the Victor Mine, Ontario, Canada, and are ultra-pure gem-quality...Victor kimberlite (177 ± 4 Ma, ID- TIMS U-Pb perovskite age; Januszczak et al., 2013) (Stachel et al |  | | Journal (article/letter/editorial) | | spinel, pyrochlore, baddeleyite, barite and perovskite (Melcher, 1966). The types of carbonatite are...collected from the fresh outcrops of the Cajati mine and alteration affects apatite crystals only on...fluid inclusions in pyroxenes from the Guide Copper Mine, a satellite intrusion of the Palabora Igneous Complex...P.R., Hagni, R.D., 2004. Bunge's Cajati Apatite Mine, SE Brazil: Mineralogy and Petrography of the Carbonatite...fluid-inclusion evidence from the Okorusu fluorite deposit, Namibia. Chemical Geology 186, 75–98. Dunworth |
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