 | | Journal (article/letter/editorial) | | subsolidus compositional trends of columbite–tantalite in the beryl–columbite Šejby granitic pegmatite, Czech...Comenius University, Ilkovičova 6, 842 15 Bratislava, Slovakia; st.chladek@seznam.cz Corresponding author...author The simply zoned Šejby pegmatite of beryl–columbite subtype is enclosed in migmatitized gneisses –...Complex, Bohemian Massif, Czech Republic. The columbite-group minerals (CGM) occur mostly in blocky K-feldspar...K-feldspar unit. Primary magmatic CGM [columbite-(Fe)−tantalite-(Fe)], show an interesting compositional |  | | Journal (article/letter/editorial) | | rare-element class. Moreover, abundant cassiterite and columbite-group minerals crystallized in the Cruz del Rayo...Complex. Cassiterite, rutile, ilmenite and tantalite-(Fe) occur disseminated in the border facies of the External...del Rayo: (i) granite-like pegmatites, with columbite-(Fe) I and II and cassiterite, in which the influence...tantalite-(Fe), and (ii) greisen-like bodies, which contain high amounts of columbite-(Fe), columbite(Mn),...crystallization of the secondary assemblage, richer in Fe and Ta, is interpreted mainly as a consequence of |  | Sun, Wenli, Zhao, Zhidan, Mo, Xuanxue, Wei, Chunjing, Dong, Guochen, Li, Xiaowei, Yuan, Wanming, Wang, Tao, Yang, Shuang, Wang, Bingzhang, Pan, Tong, Han, Jie, Cao, Hongliang, Tang, Yan, Zhang, Liangliang (2023) Age and Composition of Columbite-Tantalite Group Minerals in the Spodumene Pegmatite from the Chakabeishan Deposit, Northern Tibetan Plateau and Their Implications. Minerals, 13 (2) 201 doi:10.3390/min13020201 | Journal (article/letter/editorial) | | minerals Article Age and Composition of Columbite-Tantalite Group Minerals in the Spodumene Pegmatite...major-element composition, and U-Pb dating of columbite-tantalite group minerals (CGMs) in the spodumene...g., tourmaline [13,14], muscovite [15,16] and columbite-tantalite group minerals (CGMs) [17–19]. The Tibetan...rare-metal pegmatite dykes. The most fascinating region is the Tianshuihai-Songpan-Ganze terrane in the...to Proand U-Pb isotope of CGMs (AB2 O6 , A = Mn, Fe, B = Nb, Ta) in the spodumene-bearing to-Tethys Ocean |  | Anderson, M. O., Lentz, D. R., McFarlane, C. R. M., Falck, H. (2013) A geological, geochemical and textural study of an LCT pegmatite: implications for the magmatic versus metasomatic origin of Nb-Ta mineralization in the Moose II pegmatite, Northwest Territories, Canada. Journal of GEOsciences, 58 (4) 299-320 | Journal (article/letter/editorial) | | occur in the central portions of the pegmatite. Columbite–tantalite minerals occur throughout the pegmatite...chemical patterns demonstrate an evolution from columbite to tantalite, whereby the Ta/(Ta + Nb) ratio increased...progressive fractionation (0.13–0.59) but the Mn/(Mn + Fe) ratio remained nearly constant (0.15–0.31). The...chemical evolution of the Nb- Ta oxides from columbite to tantalite is consistent with crystallization...“supercritical” fluid. Keywords: Moose II pegmatite, columbite–tantalite, Nb–Ta chemical evolution, muscovite |  | Roza Llera, Ana, Fuertes-Fuente, Mercedes, Cepedal, Antonia, Martin-Izard, Agustín (2019) Barren and Li–Sn–Ta Mineralized Pegmatites from NW Spain (Central Galicia): A Comparative Study of Their Mineralogy, Geochemistry, and Wallrock Metasomatism. Minerals, 9 (12) 739 doi:10.3390/min9120739 | Journal (article/letter/editorial) | | Presqueira body show a trend from columbite-(Fe) to tantalite-(Fe) and tapiolite-(Fe). In this body, the Li-aluminosilicate...Keywords: wallrock signature; Li–Sn–Ta pegmatite; columbite–tantalite; tantaliferous cassiterite; NW Spain...to the rare element class (beryl type, beryl–columbite–phosphate subtype, albite–spodumene type and albite...vanadinite (Cl), andradite (Ca), MnTi (Mn, Ti), magnetite (Fe), apatite (P,F), SnO2 (Sn), ZnS (Zn), AsGa (Ga),...plotted on the triangular diagram as a function of Al (IV + VI)–R2+–Si (apfu), according to [25]. Chemical |  | | Journal (issue) | | J., RODA-ROBLES, E., VILLASECA, C., SIMMONS, W. Fe-Mn-(Mg) distribution in primary phosphates and silicates...Beryl in the West-Carpathian granitic pegmatites, Slovakia: compositional variations and post-magmatic alteration...ScNbO4: Products of Ca-metasomatism of Sc-enriched columbite-(Mn) from NYF pegmatite Kožichovice II, Czech...differentiation of granitic magmas related to plutons in the region, or independently of plutonism by low-volume crustal...of the features of the continental crust in the region, and in particular the information on its overall |  | | Book | | the same passion for minerals and the NE Bavarian region. The Oberpfalz was his home and my adopted country...the principal techniques of deep geophysics, this region enables us to look at the origin of pegmatites...to find new profitable mineral deposits in the region are not very promising and mining in Germany is...mining was the reason for people to settle in a region but likewise the focal point of geoscientists to...extending from Switzerland, through Austria into Slovakia, this crustal section is host to a great variety |  | | Journal (volume) | | of Szeged On the cover: Map of the Carpathian region with type localities of new mineral species, rocks...Mineralogical Society of Romania Geological Society of Slovakia, Mineralogical-Geochemical Branch Eötvös Loránd...(Romania) (Romania) (Austria) (Croatia) (Hungary) (Slovakia) (Greece) (Hungary) (USA) (Hungary) (Egypt) (Austria)...(Hungary) (Hungary) (Hungary) (Croatia) (Hungary) (Slovakia) (Serbia) (South Africa) (Austria) (France) (Hungary)...(Hungary) (Hungary) (Croatia) (UK) (Slovakia) (USA) (Austria) (Romania) (Slovakia) (China) (Germany) (Poland) |
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