 | | Journal (article/letter/editorial) | | series, pollucite, tantalite-(Fe) and tantalite-(Mn), i.e., super-LCT deposits. Keywords: granitic pegmatite...the location of the ternary feldspar solvus at three temperatures, and of the cotectic. The point z marks...inward, and give way in the intermediate zone to Mn-enriched fluorapatite. At the core margin, pods of...anorthite, P-anorthite: primitive anorthite. There are three solvi; from left to right, Peristerite, Bøggild...relative depletion in lithium, cesium and tantalum, three elements that are enriched in granitic pegmatites |  | | Journal (article/letter/editorial) | | Published online December 2013 Micas, feldspars and columbite–tantalite minerals from the zoned granitic lepidolite-subtype...thermometry records a decrease in temperature. Columbite-(Mn) shows a compositional trend from the outer...muscovite, lithium micas, albite, K-feldspar, columbite–tantalite minerals, gahnite, electron microprobe...paper presents the study of micas, feldspars and columbite–tantalite minerals to provide information on their...tabular variety of albite, cassiterite, gahnite, columbite–tantalite, rutile, uranium minerals and secondary |  | | Journal (article/letter/editorial) | | 0.58 0.05 0.86 ND Element, ppmw Be Li Rb Cs B F Mn Nb Ta 39 3440 1160 580 1924 13,000 b465 51 24 169...Rubicline Pollucite Tourmaline Topaz Spessartine Mn-columbite Mn-tantalite ~500 °C ~390 °C ~525 °C ~525 °C...2001a); spessartine (London et al., 2001b); Mn-columbite and Mn-tantalite (Linnen and Cuney, 2005). e Calculated...solubility-saturation surface for beryl in granitic melts of three compositions: metaluminous haplogranite, peraluminous...and mafic phosphates, between spessartine (Mn-rich garnet) and Mn-phosphates, and between lithium aluminosilicates |  | | Journal (issue) | | Complex, Wausau Syenite Compley, Marathon County, Wisconsin, USA……………………………………………..21 DOLGOPOLOVA, A.,...Emmons pegmatite, Greenwood, Oxford Co., Maine, USA: implication for the origin of this unusual para..., RODA-ROBLES, E., VILLASECA, C., SIMMONS, W. Fe-Mn-(Mg) distribution in primary phosphates and silicates...evolution of the Emmons rare-element pegmatite (Maine, USA)…………………………………………37 GUASTONI, A., GENTILE, P., NESTOLA...of the Berry-Havey rare-element pegmatite (Maine, USA): preliminary results……………………………………………………………………… |  | Novák, Milan, Cempírek, Jan, Gadas, Petr, Škoda, Radek, Vašinová Galiová, Michaela, Pezzotta, Federico, Groat, Lee A. (2015) Boralsilite and Li, Be-bearing "Boron Mullite" Al8B2Si2O19, Breakdown products of spodumene from the Manjaka pegmatite, Sahatany valley, Madagascar. The Canadian Mineralogist, 53 (2) 357-374 doi:10.3749/canmin.1400092 | Journal (article/letter/editorial) | | accessory minerals include Ca,Mn-rich garnet, beryl (frequently Cs-rich), columbite-tantalite, pollucite, rhodizite-londonite...Schematic map of the Sahatany Valley pegmatite district. The grey stars represent the main pegmatite dikes... wollastonite (Ca), almandine (Fe), spessartine (Mn), fluorapatite (P), titanite (Ti), chromite (Cr)...SPODUMENE USA) laser-ablation system and an Agilent 7500 CE (Agilent Technologies, Santa Clara, CA, USA) ICPMS...of fluorapatite, lens-shaped crystals of black columbite-tantalite, and anhedral grains of pink lithiophilite |  | Novák, Milan, Sejkora, Jiří, Škoda, Radek, Budina, Václav (2008) Bismutotantalite-stibiotantalite-stibiocolumbite assemblage from elbaite pegmatites at Molo near Momeik, northern Shan State, Myanmar. Neues Jahrbuch für Mineralogie - Abhandlungen, 185 (1) 17-26 doi:10.1127/0077-7757/2008/0108 | Journal (article/letter/editorial) | | pegmatites of this belt may be classified as beryl-columbite subtype (localities Gu Taungt, Payangazu, Taunggwa)...Ti, Zr, Hf, U, Th, Si, Y, Sc, Sb, Bi, As, Al, Pb, Mn, Mg, Fe, Ca and F were measured in wavelength dispersive...Ca – andradite, Fe – columbite, Mn – rhodonite, Ti – TiO; Lα lines: Nb – columbite, Sn – SnO2, W – metallic...contents of Ca = 0.07 – 0.19 apfu (up to 1.08 wt.% CaO), Mn = 0.03 – 0.12 apfu (up to 0.88 wt.% MnO), and F =...Al2O3), lower concentrations of Ca (0.49 wt.% CaO) and Mn (0.07 wt.% MnO). Fine-grained saccharoidal albite |  | | Book | | jewels of nature. Crystals are solids with regular three-dimensional repetitive Biominerals Crystals formed...Colorado, USA * 12 x 9x 5 om MINERALS: PRODUCTS OF A CHANGING PLANET 11 Vanadinite, San Carlos district...zeolites. Calcite (septarian nodule), San Juan County, Utah, USA * 18 x 24x Bem 14 | MINERALS: PRODUCTS...with interlocking and irregular shapes. There are three major classes of rocks — igneous, sedimentary Sedimentary...undergo little or no recycling activity. The rocks they are made of have changed so little gravity |  | | Journal (article/letter/editorial) | | intermediate zone of a zoned marginal pegmatite. Columbite-group minerals and microlite are the principal...aplite of the marginal pegmatite are columbite-(Mn), tantalite-(Mn), and wodginite-group minerals. Ta-Nb...triplite-dominated nodules as aggregates of acicular columbite-(Mn) in association with fibrous molybdenite, zircon...aplite have a columbite-(Mn) core (stage I), overgrown and resorbed by a later stage II columbite-group mineral...compositional gap between core and overgrowth, although the Mn/(Mn + Fe) values of the two stages are similar. Subsequent |  | | Journal (issue) | | gressman@minrec.org Articles The Malkhan Pegmatite District Krasny Chikoy, Transbaikalia, Eastern Siberian...the Forgotten Pocket, Sosedka pegmatite, Malkhan district. The same specimen as shown from a different angle...or $225/three years Subscription (outside the U.S.): $89/one year, $178/two years, or $267/three years... $216/two years, or $324/three years, (Canada) $186/one year, (outside USA other than Canada) $265 for...an exact measure of how many people watched each little video clip of the larger documentary. The results |  | Breiter, K., Ďurišová, J., Hrstka, T., Korbelová, Z., Vašinová Galiová, M., Müller, A., Simons, B., Shail, R.K., Williamson, B.J., Davies, J.A. (2018) The transition from granite to banded aplite-pegmatite sheet complexes: An example from Megiliggar Rocks, Tregonning topaz granite, Cornwall. Lithos, 302. 370-388 doi:10.1016/j.lithos.2018.01.010 | Journal (article/letter/editorial) | | diopside, K – leucite, Ti – rutile, P – apatite, Mn – MnCr2O4, Fe – magnetite, F – fluorite, and Rb –...of 213 nm (New Wave Research, Inc., Fremont, CA, USA), which was coupled to a ICPQMS instrument with quadrupole...(Agilent 7500ce, Agilent Technologies, Santa Clara, CA, USA). Tourmaline grains were analyzed with an ArF* excimer-based...Trace element concentrations (Al, B, Be, Fe, Ge, Li, Mn, P, Rb, Sn, Sr, and Ti) in quartz were D determined...Li-F-rich schorl. Apatite is minor, while rutile, Fe-columbite, and zircon are accessory (typical sample #5303 |  | | Journal (article/letter/editorial) | | mined for tourmaline and beryl as gemstones and columbite-tantalite and microlite concentrates. It contains...subhorizontal or dip slightly to south. In recent years, mining has provided excellent exposures of the internal...minerals helped to define the primary zones, as the Mn/Fe ratio increases with fractional crystallization...schorl, elbaite,‘fluor-elbaite’, green beryl, columbite (Mn) Pockets in the inner intermediate zone quartz...of albite, muscovite elbaite, ‘fluor-elbaite’, columbite, rutile, Ce-bastnäsite Core zone (4 a) tabular |  | Küster, Dirk, Romer, Rolf L., Tolessa, Dandena, Zerihun, Desta, Bheemalingeswara, K., Melcher, Frank, Oberthür, Thomas (2009) The Kenticha rare-element pegmatite, Ethiopia: internal differentiation, U–Pb age and Ta mineralization. Mineralium Deposita, 44 (7) 723-750 doi:10.1007/s00126-009-0240-8 | Journal (article/letter/editorial) | | K/Tl 6,790–3,730, Fe/Mn 19–10, Nb/Ta 6.5–3.8) and columbite–tantalite (Mn/Mn + Fe 0.4–1, Ta/Ta + Nb...contamination by hanging wall serpentinite. U–Pb dating of Mn-tantalite from two zones of the Kenticha pegmatite...pegmatite gave ages of 530.2±1.3 and 530.0±2.3 Ma. Mn-tantalite from the Bupo pegmatite, situated 9 km north...Tantalum concentrates are mainly composed of columbite–tantalite (Fe,Mn)(Ta,Nb)2O6 and small amounts of other...represents a globally important tantalum source. The mine produces around 120 t tantalum concentrate (~55% |  | Müller, Axel, Spratt, John, Thomas, Rainer, Williamson, Ben J., Seltmann, Reimar (2018) Alkali-F-Rich Albite Zones in Evolved NYF Pegmatites: The Product of Melt–melt Immiscibility. The Canadian Mineralogist, 56 (4) 657-687 doi:10.3749/canmin.1700087 | Journal (article/letter/editorial) | | (‘‘cleavelandite’’, white and pink mica, spessartine, columbite-group minerals, topaz, and fluorite) indicate...enrichments in F (1.5 to 3.6 wt.%), Cs, Rb, Ta, Nb, Mn, Ge, Bi, As, and in some cases also Li compared with...‘‘cleavelandite’’, white and pink mica, spessartine, columbite-group minerals (CGM), topaz, and fluorite, have...and mica between 1884 and the 1970’s. Small-scale mining of high-quality feldspar continues to this day... and late-stage cavity quartz, and accessory columbite and microlite group minerals, tourmaline, monazite(Ce) |  | Čopjaková, R., Škoda, R., Vašinová Galiová, M., Novák, M. (2013) Distributions of Y + REE and Sc in tourmaline and their implications for the melt evolution; examples from NYF pegmatites of the Třebíč Pluton, Moldanubian Zone, Czech Republic. Journal of GEOsciences, 58 (2) 113-131 | Journal (article/letter/editorial) | | with more evolved chemical composition (Al-, F- and Mn-rich), presence of Sn-bearing minerals (cassiterite...fluor-elbaite), Y,Sc-enriched spessartine, topaz, Li-micas (Mn-rich polylithionite, masutomilite), beryl, cassiterite...zircon, allanite-(Ce), niobian rutile, minerals columbite, fergusonite, samarskite group, wolframoixiolite...aeschynite-(Y) graphic unit Kfs, Qz > Ab; cassiterite, columbite-(Mn), zircon, Nb-rutile, aeschyniteAl-, F-rich schorl...Kfs, Qz > Ab; Al-, F-rich schorl cassiterite, columbite-(Mn), zircon, Nb-rutile, Y,Sc-rich spessartine, |  | | Journal (article/letter/editorial) | | barren pegmatites. The Li+ accompanied with Fe, Mg and Mn substitute for Al3+ at the octahedral site in muscovite...and Jiamanhaba, Figure 1) [28] and grouped into three mineralization types, which are muscovite, muscovite...rare element (REL). The formation times of these three-type pegmatites are 476–426 Ma [31,34], 369 Ma [32]...beryl-columbite Kangmunagong Qinghe KelumuteJideke Qunkuer Nb-Ta Barren beryl beryl-columbite Be...KelumuteJideke beryl beryl-columbite Be Dakalsu DakalasuKekexier beryl beryl-columbite Be-Nb-Ta complex |  | Liu, Chen, Wang, Ru-Cheng, Wu, Fu-Yuan, Xie, Lei, Liu, Xiao-Chi, Li, Xing-Kui, Yang, Lei, Li, Xue-Jiao (2020) Spodumene pegmatites from the Pusila pluton in the higher Himalaya, South Tibet: Lithium mineralization in a highly fractionated leucogranite batholith. Lithos, 358. 105421 doi:10.1016/j.lithos.2020.105421 | Journal (article/letter/editorial) | | pegmatite is a well- zoned dike that hosts beryl, columbite, rn al cassiterite, and Li minerals, which...Keywords : Pegmatite, Li mineralization, spodumene, columbite–cassiterite U–Pb dating, Pusila pluton, Himalaya...mineralization associated with minerals such as beryl, columbite–tantalite, and cassiterite, which are found in...zone in the pegmatite. Cassiterite and rn al columbite from the pegmatite samples were also used for...and tourmaline, and U–Pb isotopic analyses of columbite and cassiterite were conducted by laser ablation |  | | Thesis/Dissertation | | the Kragerø pegmatite field - Bamble pegmatite district.................. 41 Lindvikskollen pegmatite...Ramfoss pegmatite of the Kongsberg-Modum pegmatite district ................................................Spro pegmatite of the Østfold-Halland pegmatite district. ...............................................intermediate zone exposed in the wall of the eastern mine. ......................... 66 Figure 8-4 - Lithologies...pegmatite and other Lindvikskollen area rocks. A: Sn vs Mn (ppm) plot showing that tourmalines of the albitite |  | | Book (volume) | | Н3О+, K, Sr, REE, Y, Ba, Mn, Ca; M(1) ¼ Ca, Mn, REE, Na, Sr, Fe; M(2) ¼ Fe, Mn, Na, Zr, Ta, Ti, K, Ba,...octahedron and major Mn–O-stretching band positions in IR spectra of tetravalent Mn oxides was obtained...data (open circles) and as ΣVIM2+ ¼ Ti + Nb + Mg + Mn + Fe + Zn 8 for samples with unknown structures...labuntsovite-Mn (19, 21, 23), vuoriyarvite-K (20), karupmøllerite-Ca (24), kuzmenkoite-Mn (25, 27, 30)...30), kuzmenkoite-Zn (28), organovaite-Mn (29), gutkovaiteMn (31), organovaite-Zn (32, 33) and parakuzmenkoiteFe |  | | Journal (volume) | | considered as “puzzling” rocks. In the following three aspects regarding pegmatite classification and genesis...example a 14-m-long spodumene crystal from the Etta mine in the Black Hills, South Dakota and an 18-m-long...temperature at which pegmatites crystallize may have little or no direct relationship to the conditions of...supercritical stage drops below its critical conditions three phases can coexist: a silicate-dominated melt (A-type...conditions. The coexistence of these three very different phases permit a three stage fractionation and separation |
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