	Melleton, J., Gloaguen, E., Frei, D., Novak, M., Breiter, K. (2012) HOW ARE THE EMPLACEMENT OF RARE-ELEMENT PEGMATITES, REGIONAL METAMORPHISM AND MAGMATISM INTERRELATED IN THE MOLDANUBIAN DOMAIN OF THE VARISCAN BOHEMIAN MASSIF, CZECH REPUBLIC?. The Canadian Mineralogist, 50 (6) 1751-1773 doi:10.3749/canmin.50.6.1751	Journal (article/letter/editorial)
	domain, 10 in situ U–Pb dates of minerals of the columbite–tantalite group from eight rare-element pegmatites...minimal importance in columbite. Two ages of emplacement have been obtained. An older episode at ~333...Keywords: LCT pegmatite, rare-element-enriched magma, columbite–tantalite, LA–SF–ICP–MS dating, Variscan orogeny...LA–SF–ICP–MS ont été réalisées sur des grains de columbite et de tantalite issus des différentes pegmatites...du plomb radiogénique est très lente dans la columbite. Deux événements de mise en place ont été obtenus
	Konzett, Jürgen, Schneider, Tobias, Nedyalkova, Latina, Hauzenberger, Christoph, Melcher, Frank, Gerdes, Axel, Whitehouse, Martin (2018) Anatectic Granitic Pegmatites from the Eastern Alps: A Case of Variable Rare-Metal Enrichment During High-Grade Regional Metamorphism – I: Mineral Assemblages, Geochemical Characteristics, and Emplacement Ages. The Canadian Mineralogist, 56 (4) 555-602 doi:10.3749/canmin.1800008	Journal (article/letter/editorial)
	University of Innsbruck, Innrain 52 A-6020 Innsbruck, Austria CHRISTOPH HAUZENBERGER Department of Earth Sciences...University of Graz, Universitätsplatz 2, A-8010 Graz, Austria FRANK MELCHER Chair of Geology and Economic Geology...e, quartz-plagioclase-muscovite, and quartz-K-feldspar-plagioclase-muscovite) together with minor beryl...contacts with the country rocks. If present, columbite-group phases (CGP) are the major rare-metal-bearing...primary pegmatite assemblages, (3) the nature of the Fe-Mn phases and their relative timing of crystallization
	Baldwin, J. R., Hill, P. G., Finch, A. A., von Knorring, O., Oliver, G. J. H. (2005) Microlite-manganotantalite exsolution lamellae: evidence from rare-metal pegmatite, Karibib, Namibia. Mineralogical Magazine, 69 (6) 917-935 doi:10.1180/0026461056960299	Journal (article/letter/editorial)
	between the lamellae. Textural relations suggest an exsolution origin for the lamellae. Manganotantalite...hypotheses concerning the origin of the intergrowth: (1) an exsolution texture of the lamellae in microlite;...rare intergrowth of Ta-rich minerals embedded in an amblygonite montebrasite (Li,Na)AlPO4(OH,F) host...minerals is not only remarkable for its texture but is an exceptional and informative sample in the light of...(Roering, 1961). The pegmatite comprises an outer zone, an intermediate zone, a lithian mica zone and
	Dill, Harald G. (2015) The Hagendorf-Pleystein Province: the Center of Pegmatites in an Ensialic Orogen - Modern Approaches in Solid Earth Sciences No. 15. Springer International Publishing. doi:10.1007/978-3-319-18806-5	Book
	HagendorfPleystein Province: the Center of Pegmatites in an Ensialic Orogen Modern Approaches in Solid Earth...Hagendorf-Pleystein Province: the Center of Pegmatites in an Ensialic Orogen Harald G. Dill Gottfried-Wilhelm-Leibniz...did not postpone my questions. I did not receive an answer from him, he provided me with a solution....major constituents the three rock-forming minerals feldspar, quartz and mica, which in places develop mega-crystals...share of raw material extracted from pegmatites is feldspar, quartz and mica, and only a tiny fraction of
	Van Lichtervelde, Marieke, Holtz, Francois, Melcher, Frank (2018) The effect of disequilibrium crystallization on Nb-Ta fractionation in pegmatites: Constraints from crystallization experiments of tantalite-tapiolite. American Mineralogist, 103 (9) 1401-1416 doi:10.2138/am-2018-6441	Journal (article/letter/editorial)
	Germany 3 Montanuniversität Leoben, 8700 Leoben, Austria 4 Federal Institute for Geosciences and Natural...Germany Abstract Tapiolite [FeTa2O6] and columbite-group minerals [(Fe,Mn)(Ta,Nb)2O6] are common Nb-Ta-bearing...compositional gap. In this study, tapiolite and columbite-group minerals (CGM) were crystallized from water-saturated...between a rutile-structured component Fe3+TaO4 and (Fe,Mn)Ta2O6. The experimental CGM-tapiolite compositional...shift the pegmatitic melt properties toward those of an aqueous fluid, sharply depressing solidus temperature
	*Boegel, Hellmuth (1971) A Collector's Guide to Minerals and Gemstones. Thames and Hudson.*	Book
	for within several months they asked me to render an opinion as to its suitability for translation and...neglecting the truly important European localities. As an amateur handbook, this one makes no pretense at being...method of indicating increasing quality by the use of an increasing number of exclamation points within parentheses...version are truly those intended in the original. As an outgrowth of this study a number of errors in the...renditions are all the more remarkable because he is an ardent amateur mineral collector and is therefore
	Dill, Harald G., Skoda, Radek, Weber, Berthold, Müller, Axel, Berner, Zsolt A., Wemmer, Klaus, Balaban, Sorin-Ionut (2013) Mineralogical and chemical composition of the Hagendorf-North Pegmatite, SE Germany – a monographic study. Neues Jahrbuch für Mineralogie - Abhandlungen: Journal of Mineralogy and Geoche, 190 (3) 281-318 doi:10.1127/0077-7757/2013/0244	Journal (article/letter/editorial)
	Abstract. Hagendorf-North is a zoned Li-Nb-P-feldspar-quartz pegmatite located W of the village of Hagendorf...Hagendorf-South deposit which once was the largest feldspar pegmatite in Central Europe. Hagendorf-North also...War II, the pegmatite has no longer been considered an economic target and the mine was shut down. The reason...erosion. Newly formed Al-phosphates are widespread and Fe-phosphates indicative of reducing conditions occur...pegmatite has been depleted of its less resistant feldspar envelope and now morphologically stands out as
	Pieczka, A., Szuszkiewicz, A., Szełęg, E., Nejbert, K., Łodziński, M., Ilnicki, S., Turniak, K., Banach, M., Hołub, W., Michałowski, P., Różniak, R. (2013) (Fe,Mn)-(Ti,Sn)-(Nb,Ta) oxide assemblage in a little fractionated portion of a mixed (NYF + LCT) pegmatite from Piława Górna, the Sowie Mts. block, SW Poland. Journal of GEOsciences, 58 (2) 91-112	Journal (article/letter/editorial)
	91–112 DOI: 10.3190/jgeosci.136 Original paper (Fe,Mn)–(Ti,Sn)–(Nb,Ta) oxide assemblage in a little...Mickiewicza 30, Poland DSS Company, Piława Górna Quarry, 58-240 Piława Górna, Sienkiewicza 96, Poland Corresponding...Textural relationships and compositional variations of (Fe,Mn)–(Ti,Sn)–(Nb,Ta) oxides and associated minerals...crystallized in the following sequence: (1) columbite-(Fe) evolving to columbite-(Mn), associated with Nb- and Ta-bearing...almandine–spessartine garnet + Ti-poor schorl, (2) columbite-(Fe), (3) tantalite-(Fe), (4) Ti- and Sn-bearing ixiolite
	René, Miloš, Škoda, Radek (2011) Nb-Ta-Ti oxides fractionation in rare-metal granites: Krásno-Horní Slavkov ore district, Czech Republic. Mineralogy and Petrology, 103 (1) 37-48 doi:10.1007/s00710-011-0152-z	Journal (article/letter/editorial)
	rare-metal granites: Krásno-Horní Slavkov ore district, Czech Republic Miloš René & Radek Škoda Received:...Nb-Ta-Ti-bearing oxide minerals (Nb-Ta-bearing rutile, columbite-group minerals) represent the most common Nb-Ta...Slavkov ore district. Tungsten-bearing columbite-(Fe), W-bearing ixiolite, wodginite and tapiolite-(Fe) are...represented mostly by columbite-(Fe) and rarely by columbite-(Mn), with Mn/(Mn+Fe) ratio ranging from 0...0.23 to 0.94. The exceptionally rare Fe-rich, W-bearing ixiolite occurs only as inclusions in Nb-Tabearing
	*(2013) The Rochester Mineralogical Symposium Program 40, Rochester Mineralogical Symposium.*	Show/Event (guide)
	Apatite and Other Phosphates from Llallagua, Bolivia: An Interesting Story of Hydrothermal Mineralization...John is an outstanding specimen mineralogist well known to all of you in the audience. He is an executive...current apatite volume published by Lithographie is an excellent example of his efforts. Underpining this...University of Illinois at UrbanaChampaign in 1988; an MS in clay mineralogy/crystallography from the University...BS in physics from Case Western Reserve in 1983; an MS in physics from Ohio State in 1985; and a PhD
	Graupner, T., Melcher, F., Gäbler, H.-E., Sitnikova, M., Brätz, H., Bahr, A. (2010) Rare earth element geochemistry of columbite-group minerals: LA-ICP-MS data. Mineralogical Magazine, 74 (4) 691-713 doi:10.1180/minmag.2010.074.4.691	Journal (article/letter/editorial)
	691–713 Rare earth element geochemistry of columbite-group minerals: LA-ICP-MS data T. GRAUPNER1,...(REE) concentrations and distribution patterns of columbite-tantalite minerals from Ta-ore provinces worldwide...chondritenormalized REE distribution patterns are defined for columbite-group minerals (CGM) from lithiumcaesium-tantalum...of the melt in a pegmatite body (either Nb ? Ta or Fe ? Mn fractionation lines, or both) results in smaller...forensic tool). K EY WORDS : LCT family pegmatites, columbite*-tantalite, REE geochemistry, LA-ICP-MS data.
	*(2019) Golconda!. The Mineralogical Record* Vol. 50 (5) The Mineralogical Record, Inc.**	Journal (issue)
	SEPTEMBER–OCTOBER 2019 Articles The Golconda District, Minas Gerais, Brazil ..........................field-collected at many localities in the U.S., Germany, Austria, Switzerland, France, Italy, Great Britain, Hungary...published article in an American magazine appeared in Rocks & Minerals in 1954 (an article on the Idar-Oberstein...including Mineralogical Record, Lapis, and Der Aufschluss. He was an Honorary Member and past President (until...Minerals” (1973), “European Gold” (1982) “German Silver: An Historical Perspective on Silver Mining in Germany”
	Dill, Harald G., Weber, Berthold, Botz, Reiner (2011) The baryte-bearing beryl-phosphate pegmatite Plössberg—A missing link between pegmatitic and vein-type barium mineralization in NE Bavaria, Germany. Geochemistry, 71 (4) 377-387 doi:10.1016/j.chemer.2011.07.001	Journal (article/letter/editorial)
	Chemie der Erde 71 (2011) 377–387 Contents lists available at SciVerse ScienceDirect Chemie der Erde...Wald, (NE Bavaria, Germany), with the largest feldspar-quartz concentration of this type located in the...of Hagendorf, was temporarily exposed and offered an insight into a mineralogical setting quite different...known about the behavior of Ba minerals in igneous feldspar-quartz rocks (Mehnert and Büsch, 1981; Černy...described. Particular 378 H.G. Dill et al. / Chemie der Erde 71 (2011) 377–387 Fig. 1. Pegmatites and aplites
	Lottermoser, B. G., Lu, J. (1997) Petrogenesis of rare-element pegmatites in the Olary Block, South Australia, part 1. Mineralogy and chemical evolution. Mineralogy and Petrology, 59 (1) 1-19 doi:10.1007/bf01163059	Journal (article/letter/editorial)
	Mineralogy PNology © Springer-Verlag 1997 Printed in Austria Petrogenesis of rare-element pegmatites in the...typically zoned and possess an inner quartz core, or a series of cores, an asymmetrical intermediate zone...muscovite, quartz, microcline and minor plagioclase, and an outer border zone of fine- to medium-grained microcline...suggest a sequence of hydrothermal transformations in an oxidising, low-temperature environment (< 250°C)...this succession is the decrease in Mg and Ca, and an increase in Fe3+/Fe2+, Mn3+/Mn2+, and H20. High aHF
	Müller, Axel, Romer, Rolf L., Pedersen, Rolf-Birger (2017) The Sveconorwegian Pegmatite Province – Thousands of Pegmatites Without Parental Granites. The Canadian Mineralogist, 55 (2) 283-315 doi:10.3749/canmin.1600075	Journal (article/letter/editorial)
	Sveconorwegian NYF pegmatites are not necessarily formed in an anorogenic setting in relation to A-type magmatism...pegmatite, Sveconorwegian, Svecofennian, dating, columbite group minerals. INTRODUCTION The close genetic...CANADIAN MINERALOGIST FIG. 1. Schematic diagram for an idealized pegmatite ﬁeld illustrating the spatial...the world. The pegmatites have been mined for feldspar, quartz, white mica, Sc, and Be from the 1860s...Rogaland Igneous Province (RIC). The RIC consists of an anorthosite-mangerite-charnockite suite, the emplacement
	Galliski, M. A., Marquez-Zavalia, M. F., Cerny, P., Martinez, V. A., Chapman, R. (2008) THE Ta-Nb-Sn-Ti OXIDE-MINERAL PARAGENESIS FROM LA VIQUITA, A SPODUMENE-BEARING RARE-ELEMENT GRANITIC PEGMATITE, SAN LUIS, ARGENTINA. The Canadian Mineralogist, 46 (2) 379-393 doi:10.3749/canmin.46.2.379	Journal (article/letter/editorial)
	zone inward. Early phases consist of minor columbite-(Fe) in the border and wall zones. In the intermediate...spodumene, homogeneous or oscillatory-zoned columbite-(Fe) crystals occur in the outer parts. They show...fractionation trend to tantalite-(Fe) with Ta/(Ta + Nb) ranging from 0.35 to 0.56 at an almost constant Mn/(Mn +...+ Fe2+ + Fe3+) of ~0.33, and locally to rare columbite-(Mn). In the middle and inner intermediate zones...three stages marked by sequential dominance of columbite-group minerals, wodginite-group minerals and ferrotapiolite
	*René, Miloš (2019) Nb–Ta–Ti Oxides in Topaz Granites of the Geyersberg Granite Stock (Erzgebirge Mts., Germany). Minerals, 9 (3). 155pp. doi:10.3390/min9030155*	Journal (article/letter/editorial)
	Abstract: Oxide minerals (Nb–Ta-rich rutile, columbite-group minerals and W-bearing ixiolite) represent...and also topaz- and Li-mica-bearing granite. Columbite group minerals occur usually as euhedral to subhedral...represented by columbite-(Fe) with Mn/(Mn + Fe) ratio ranging from 0.07 to 0.15. The rare Fe-rich W-bearing...needle-like crystals. The ixiolite is Fe-rich with relatively low Mn/(Mn + Fe) and Ta/(Ta + Nb) values (0.10–0...SnO2 ). Keywords: topaz granite; Nb–Ta rutile; columbite; ixiolite; Saxothuringian Zone 1. Introduction
	*Pracejus, Bernhard - Ed.* (2014) The Ore Minerals Under the Microscope (2nd ed.) Elsevier. doi:10.1016/c2012-0-01360-9**	Book (edition)
	Geoscience 3 THE ORE MINERALS UNDER THE MICROSCOPE An Optical Guide Second Edition Atlases in Geoscience...Geoscience 3 THE ORE MINERALS UNDER THE MICROSCOPE An Optical Guide Second Edition Bernhard Pracejus Sultan...environment that has not yet been examined adequately. An example for such a situations can be seen in euhedral...(previous and new) were electronically enhanced through an increased resolution (not sharpness) to counter fuzziness...al. (1999), Naldrett (2005), Strunz et al. (1958). An enormous wealth of data regarding mineral associations
	Lupulescu, Marian, Chiarenzelli, Jeffrey, Pecha, Mark, Singer, Jared, Regan, Sean (2018) Columbite-Group Minerals from New York Pegmatites: Insights from Isotopic and Geochemical Analyses. Geosciences, 8 (5) 169 doi:10.3390/geosciences8050169	Journal (article/letter/editorial)
	geosciences Article Columbite-Group Minerals from New York Pegmatites: Insights from Isotopic and Geochemical...Published: 9 May 2018 Abstract: Columbite crystals from niobium-yttrium-fluorine (NYF) pegmatites...Fordham gneiss and/or Paleozoic Bedford gneiss (Columbite-(Fe); Kinkel and Baylis localities) and the Manhattan...Manhattan Schist of Lower Paleozoic age (Columbite-(Mn); Fort George and Harlem River Drive localities)...372.2 ± 8.2 Ma (Baylis Quarry), 371.3 ± 7.3 and 383.4 ± 8.9 Ma (Kinkel Quarry); 383 ± 15 Ma (185th St
	Raith, J.G., Melcher, F. (2014) Pegmatite – erste österreichische Arbeitstagung an der Montanuniversität Leoben (11. April 2014) – Zusammenfassungen der Beiträge. Mitteilungen der Österreichischen Mineralogischen Gesellschaft, 160.	Journal (article/letter/editorial)
	Zusammenfassung der Beiträge Interne Zonierung eines Columbit-Kristalls aus einem Erzkonzentrat aus der DR Kongo...Peter-Tunner-Straße 5, 8700 Leoben, Austria Am 11. April 2014 fand an der Montanuniversität Leoben die 1...wissenschaftlichen Gesichtspunkten verstärkt in den Fokus der geowissenschaftlichen Forschung gerückt. Sie sind...veröffentlicht. Die Organisatoren bedanken sich bei der Österreichischen Mineralogischen Gesellschaft (ÖMG)...Wissenschaftliches Programm der 1. Pegmatit Arbeitstagung am 11. April 2014 an der Montanuniversität Leoben
	Novák, M., Chládek, Š., Uher, P., Gadas, P. (2018) Complex magmatic and subsolidus compositional trends of columbite-tantalite in the beryl-columbite Šejby granitic pegmatite, Czech Republic: role of crystal-structural constraints and associated minerals. Journal of GEOsciences, 63 (3) 253-263	Journal (article/letter/editorial)
	subsolidus compositional trends of columbite–tantalite in the beryl–columbite Šejby granitic pegmatite, Czech...author The simply zoned Šejby pegmatite of beryl–columbite subtype is enclosed in migmatitized gneisses –...Czech Republic. The columbite-group minerals (CGM) occur mostly in blocky K-feldspar unit. Primary magmatic...magmatic CGM [columbite-(Fe)−tantalite-(Fe)], show an interesting compositional and textural evolution.... Subhomogeneous cores of columbite-(Fe)−tantalite-(Fe) (A) are surrounded by heterogeneous intermediate
	*Tait, Kimberly (2012) Gems and Minerals: Earth Treasures from the Royal Ontario Museum. 256pp.*	Book
	composed ofjust a few minerals; quartz and the feldspar group are the most abundant processes — called...A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...combination of space for growth, sufficient time and an adequate supply of chemical nutrients. Well-formed...crystals found in many volcanic rocks — such as feldspar and leucite — crystallized in a magma chamber...In the larger open spaces, the crystals can reach an impressive size. Among the many minerals found within
	Dill, H. G., Melcher, F., Gerdes, A., Weber, B. (2008) THE ORIGIN AND ZONING OF HYPOGENE AND SUPERGENE Fe-Mn-Mg-Sc-U-REE PHOSPHATE MINERALIZATION FROM THE NEWLY DISCOVERED TRUTZHOFMUHLE APLITE, HAGENDORF PEGMATITE PROVINCE, GERMANY. The Canadian Mineralogist, 46 (5) 1131-1157 doi:10.3749/canmin.46.5.1131	Journal (article/letter/editorial)
	THE ORIGIN AND ZONING OF HYPOGENE AND SUPERGENE Fe–Mn–Mg–Sc–U–REE PHOSPHATE MINERALIZATION FROM THE...D–92637 Weiden i.d.OPf., Germany Abstract An aplite containing Fe–Mn–Mg–Sc–U–REE phosphates, some Cu–Pb–Zn...Cu–Pb–Zn sulfides, barite, and U–Nb–Ta–Ti–Fe–Mn oxides was recently discovered near Trutzhofmühle (THM) at...on columbite-(Fe) and torbernite using laser-ablation techniques. Precipitation of columbite-(Fe) and...triplite, wolfeite, triploidite, an unnamed K–Ba–Sc–Zr phosphate, an unnamed Zr–Sc phosphate–silicate
	Sami, Mabrouk, Ntaflos, Theodoros, Farahat, Esam S., Mohamed, Haroun A., Ahmed, Awaad F., Hauzenberger, Christoph (2017) Mineralogical, geochemical and Sr-Nd isotopes characteristics of fluorite-bearing granites in the Northern Arabian-Nubian Shield, Egypt: Constraints on petrogenesis and evolution of their associated rare metal mineralization. Ore Geology Reviews, 88. 1-22 doi:10.1016/j.oregeorev.2017.04.015	Journal (article/letter/editorial)
	1016/j.oregeorev.2017.04.015 This is a PDF file of an unedited manuscript that has been accepted for publication...of Vienna, Althanstrasse 14, A- 1090 Vienna, Austria b Department of Geology, Faculty of Science, Minia...and Petrology, Karl-Franzens University, Graz, Austria Abstract The Central Eastern Desert (CED) of Egypt...coarse- to medium-grained highly evolved alkali-feldspar granite (AFG; fluorite and rare metal bearing...rocks. The rock-forming minerals are quartz, K-feldspar (Or94-99), plagioclase (An0- 6) and biotite
	*Tait, Kimberly (2012) Gems and Minerals: Earth Treasures from the Royal Ontario Museum. 256pp.*	Book
	composed of just a few minerals; quartz and the feldspar group are the most abundant species. These are...combination of space for growth, sufficient time and an adequate supply of chemical nutrients. Well-formed...periods of stability PLANET \| 114 San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 om are uncommon...crystals found in many volcanic rocks — such as feldspar and leucite — crystallized in a magma chamber...In the larger open spaces, the crystals can reach an impressive size. Among the many minerals found within

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Columbite-(Fe) from Feldspar quarry, Wolfsberg, Spittal an der Drau, Spittal an der Drau District, Carinthia, Austria

Columbite-(Fe) from
Feldspar quarry, Wolfsberg, Spittal an der Drau, Spittal an der Drau District, Carinthia, Austria