 | | Journal (article/letter/editorial) | | in granitic terranes: a comparison of western Thailand with other tin belts Received: 8 September 1997...Abstract The most important tin mineralization in Thailand is associated with the Late Cretaceous to Middle...trapped magmatic ĀÆuid in at least one case, the Nong Sua pegmatite, based on their occurrence as primary...cassiterite. The western Thai granite and metallogenic province oĀers the opportunity to investigate the relative...belts, containing the most important deposits in Thailand (Suensilpong et al. 1983) and Burma (Zaw 1990) |  | | Journal (article/letter/editorial) | | of pegmatite-hosted Sn-W mineralization at Nong Sua, Thailand: Evidence from fluid inclusions and stable... 4507 I Orleans cedex 2, France Abstract-The Nong Sua aplite-pergmatite complex contains two dominant...solely within aplite. The orthomagmatic fluid at Nong Sua is preserved as primary fluid inclusions in the...develop a model to explain the fluid evolution at Nong Sua and the controls of SnW deposition. MOST PREVIOUS...g., LITTLE, 1960). The western granite belt in Thailand is atypical of most Sn-W provinces in that it |  | | Journal (article/letter/editorial) | | extract the fluids trapped in these minerals. The Na/K ratios of the fluid inclusions in two topaz samples...setĀ tings w o r l d w i d e . A l t h o u g h major k n o w n 0020-6814/98/340/647-16 $10.00. deposits...andesite, trachyte, and rhyolite to minor basalt. K/Ar dating of granitoid rocks in this belt at Salingyi...granodiorite gave a whole rock K/Ar age of 70.7 Ā± 4.2 Ma and biotites yielded K/Ar ages from 93.7 Ā± 3.4 Ma...1983) for the Tawnpeng granitoid. K/Ar dating of biotite and feldspar suggests that the TawnĀ peng granitoid |  | Linnen, Robert L., Pichavant, Michel, Holtz, FranƧois, Burgess, Simon (1995) The effect of on the solubility, diffusion, and speciation of tin in haplogranitic melt at 850Ā°C and 2 kbar. Geochimica et Cosmochimica Acta, 59 (8) 1579-1588 doi:10.1016/0016-7037(95)00064-7 | Journal (article/letter/editorial) | | from of glass >500 pm from cassiterite. in WI%: K,O Speciation of tin in granite Starting Materials...constant of water. from Robie et al. ( 1979): log K = log f& - log .fH1 - 0.5logh,,. 20 and >500 12...glasses, is approximately 5% relative for Na,O and K?O, 4% relative for AiZOi. and I % relative for SiOZ...which results in an log fo, error of approximately k-0.1. A difference of - 1 log unit fo, (which is still...interpreted as cumulates. In the study of the Nong Sua aplite-pegmatite system, Linnen et al. ( 1992) |  | | Journal (article/letter/editorial) | | enriched in F and Sn. Strong exsolution of alkali feldspar has produced intergranular albite rims and grain...fluorite and quartz. Metasomatic albitization of K-feldspar and K-feldspathization of plagioclase have only...slightly porphyritic, with 1ā3 cm long alkali feldspar and 0Ā·5ā1 cm quartz megacrysts occurring in a...Granophyric texture is locally present. The alkali feldspar is usually perthitic (string, vein and patch perthite)...recrystallized granite it may be nearly homogeneous K-feldspar. Quartz occurs in two generations, as euhedral |  | 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) | | 31Ā°51ā00ā S, in the Department of Chacabuco, San Luis Province, Argentina (Fig. 1). The La Estanzuela Range belongs...apatite to 20 cm in muscovite), and it consist of K-feldspar (40%), quartz (40%), albite (10%) and muscovite...coarse-grained. The outer unit is composed of K-feldspar (70ā80%), quartz (25ā20%), some muscovite and...viquita pegmatite, argentina middle unit contains K-feldspar (50%), quartz (30%), spodumene (~20%) and minor...whereas the inner unit is formed by quartz (50%), K-feldspar (30%), spodumene (~20%) and albite. These three |  | | Journal (article/letter/editorial) | | Moreover, the mineral chemistry of muscovite, K-feldspar and garnet classiĀ®es these pegmatites as intermediate...H2OCH4-N2-NaCl-KCl CaCl2 ĀÆuid system, between 253Ā± 293 K and 0Ā±200 MPa (Bakker et al. 1996; Bakker 1995, 1997)...and the others were probably silicates. Traces of K, C, Na, Cl and S were occasionally detected as Ā®lms...inclusions probably contain cations such as Ca, Mg, K and Na in solution (Crawford 1981). Tm ice ranges...g. La Fregeneda (Mangas and Arribas 1987), the Nong Sua aplite-pegmatite complex (Linnen and Williams-Jones |  | | Journal (article/letter/editorial) | | highest degree of geochemical fractionation (lowest K/Rb and K/Cs ratios, highest Ta and Sn values). The mineralizations...Fig. 1). The albite embays primary, megacrystic K-feldspar and quartz, and the term "replacement" is therefore...t"q Ā¢,~ I I I ,, I k..,A L....,~ ,-zc5 I I I I .,..a Ā°ā¢ "3 .,..a K,i o ak 91 92 R.B...is thanked for a preprint of his paper on the Nong Sua pegmatites. The manuscript was greatly improved...pegmatite-hosted tin-tungsten mineralization at Nong Sua, Thailand: evidence from fluid inclusions and stable |  | | Journal (article/letter/editorial) | | stage, external fluids caused the destruction of feldspar and the precipitation of calcite, anhydrite/gypsum...composed of quartz (~30%), plagioclase (~30%), K-feldspar (~25%), biotite (~13%), and accessory minerals...muscovite with inclusions of fine opaque minerals. Feldspar is altered to variable extent, showing corroded...corroded surfaces and pitted sections. In part, feldspar is replaced by clay minerals (illite). na Type II...fine-grained, and is dominated by sericite and K-feldspar. Quartz is rare. There are abundant sulfide minerals |  | | Journal (article/letter/editorial) | | (2006) noted that fractionation of Na and Li from K, Rb, and Cs can potentially be used as a geochemical...groundmass of fine-grained biotite, K-feldspar, and quartz crystals with K-feldspar phenocrysts (Inverno and Hutchinson...mainly in a breccia body (hosted in volcanic quartz-feldspar porphyry and sedimentary breccia) and in Granite-I...is halite. Other solid phases are a variety of Fe-K chloride hydrates, pyrosmalite (- NU Fe) [(Fe,Mn)8Si6O15(OH...contain significant concentrations of Fe, Mn, Zn, K, and Pb, such that the calculated salinities are considered |  | Van Lichtervelde, Marieke, GrĆ©goire, Michel, Linnen, Robert L., BĆ©ziat, Didier, Salvi, Stefano (2008) Trace element geochemistry by laser ablation ICP-MS of micas associated with Ta mineralization in the Tanco pegmatite, Manitoba, Canada. Contributions to Mineralogy and Petrology, 155 (6) 791-806 doi:10.1007/s00410-007-0271-z | Journal (article/letter/editorial) | | Unexpectedly, the most evolved compositions (low K/Rb ratios and high Li contents) occur in the wall...Scotia, is associated with the albitization of K-feldspar by a late Li-rich melt. Further evidence in favor...that could be responsible for the alteration of feldspar to mica. (2) CĢernyĢ et al. (2005) proposed that...melt rich in fluxing element may evolve to high Na/K ratios entirely through fractional crystallization...aluminosilicate melt could cause the alteration of K-feldspar to a more stable muscovite (Veksler and Thomas |  | Brand, A. A., Groat, L. A., Linnen, R. L., Garland, M. I., Breaks, F. W., Giuliani, G. (2009) Emerald Lake Mineralization Associated with the Mavis Lake Pegmatite Group, near Dryden, Ontario. The Canadian Mineralogist, 47 (2) 315-336 doi:10.3749/canmin.47.2.315 | Journal (article/letter/editorial) | | the āzone of mixingā consists of relict orange K-feldspar crystals (to 30 cm) in a matrix of anhedral bluish...to the emerald showing (Unit 3 in Fig. 2) is a K-feldspar-rich pegmatitic granite, corresponding to Units...from the parent granite, (2) decreasing K/Rb in blocky K-feldspar coexisting with beryl, (3) increasing...(Garland 2004). The pegmatite is composed of K-feldspar, plagioclase, quartz, muscovite, tourmaline,... apatite, and beryl. In outcrop, the K-feldspar varies from anhedral in matrix to large orange-pink crystals |  | Xie, Lei, Wang, Rucheng, Chen, Jun, Zhu, Jinchu, Zhang, Wenlan, Lu, Jianjun, Zhang, Rongqing (2013) A tin-mineralized topaz rhyolite dike with coeval topaz granite enclaves at Qiguling in the Qitianling tin district, southern China. Lithos, 170. 252-268 doi:10.1016/j.lithos.2013.03.001 | Journal (article/letter/editorial) | | quenched silicate melt that contains quartz, K-feldspar, albite, and zinnwaldite phenocrysts in a groundmass...chemistry and mineralogy, such as those at Cornwall, Thailand, the Erzgebirge, and the Massif Central in France...rhyolite dike within the Qitianling granite, Hunan Province, southern China. Modiļ¬ed after Liu et al., 2003;...rhyolite contains phenocrysts (10%ā15%) of quartz, K-feldspar, albite, zinnwaldite, and topaz (Fig. 3a); these...weakly irregular contacts are observed along some feldspar rims. The rhyolite contains accessory cassiterite |  | | Journal (article/letter/editorial) | | formed these veins (36ā39 wt.% NaCl eq.) produced a K-rich alteration that affected the previously formed...cordieriteāandalusite, sillimaniteāmuscovite and K-feldsparāsillimanite (migmatite) in the north (Fig. 1)...mineralogical criteria (Corbella & Melgarejo 1990): K-feldspar-rich (type I); beryl ā columbite (type II); beryl...metamorphic gradient; from the sillimanite + K-feldspar zone (type I), to the cordierite + andalusite...the Cap de Creus Pegmatites Type-I pegmatites K-feldspar pegmatites (type I) consist of two hundred lenticular |  | Yin, Rong, Huang, Xiao-Long, Xu, Yi-Gang, Wang, Ru-Cheng, Wang, He, Yuan, Chao, Ma, Qiang, Sun, Xiao-Ming, Chen, Lin-Li (2020) Mineralogical constraints on the magmaticāhydrothermal evolution of rare-elements deposits in the Bailongshan granitic pegmatites, Xinjiang, NW China. Lithos, 352. 105208 doi:10.1016/j.lithos.2019.105208 | Journal (article/letter/editorial) | | Bailongshan pegmatite district in south Xinjiang Province, NW China, is a newly discovered area of rare-element...montebrasite, eucryptite, lepidolite, beryl, Rb-enriched K-feldspar, columbite-group minerals, cassiterite, and tourmaline...as evidenced by the relatively low Nb-Ta, Zr-Hf, K-Rb fractionation degree in the carrier minerals. In...located in Hetian County, in the south of Xinjiang Province (Wang et al., 2017). The Bailongshan pegmatite...trace elements, and 10 s for volatile species (Na, K, and ro F). Quantitative corrections used the PAP |  | | Journal (article/letter/editorial) | | kurt.krenn@uni-graz.at Citation: Husar, M.; Krenn, K. Abstract: Fluid and solid inclusions in magmatic...of garnet, tourmaline, muscovite, feldspar porphyroclasts (K-feldspar and Na-rich plagioclase) embedded...embedded in a matrix of recrystallized quartz and feldspar aggregates. The volumetric occurrence of garnet porphyroclasts...mylonitic fabric of recrystallized quartz and feldspar aggregates, while garnet, orthoclase, and tourmaline...graphite and NH4 -bearing minerals like mica and/or feldspar in the host rocks [39,43ā45]. This study implies |  | | Journal (article/letter/editorial) | | granodiorite, which typically contain abundant K-feldspar megacrysts. The intrusive suite is peraluminous...respect to the Central Andean SnāWā(Ag) metallogenic province (grey outline, modified after Lehmann 1979). b)...(Fig. 3c). Whereas the replacement of biotite and feldspar produced tourmaline of yellow color in thin section...materials: albite (Na), diopside (Si, Ca, Mg), orthoclase (K, Al), hematite (Fe), spessartine (Mn), TiO2 (Ti),...formula: XY3Z6[T6O18][BO3]3V3W , 351 where X = Ca, Na, K, M (vacancy); Y = Li, Mg, Fe2+, Mn2+, Al, Cr3+, V3+ |  | Wang, Ruiliang, Zeng, Qingdong, Zhang, Zhaochong, Guo, Yunpeng, Lu, Jinhang (2020) Fluid Evolution, H-O Isotope and Re-Os Age of Molybdenite from the Baiyinhan Tungsten Deposit in the Eastern Central Asian Orogenic Belt, NE China, and Its Geological Significance. Minerals, 10 (8) 664 doi:10.3390/min10080664 | Journal (article/letter/editorial) | | mainly composed constituted of quartz (30ā40%), K-feldspar (30ā40%), (~15%), biotite and minor4A) is constituted...constituted ofminerals. quartz (30ā40%), K-feldspar (30ā40%), plagioclase (~15%), biotite (~8%), minor...the and grain constituted of quartz (30ā40%), K-feldspar (30ā40%), plagioclase (~15%), (~8%), andthe minor...varies from 0.2 mm to 2.0 mm. The grain size K-feldspar varies from biotite 0.5 to 2.0 and mm and accessory...varies 0.2 mm 2.0 mm. Thegranular grain size of of K-feldspar from 0.5 to1.5 2.0 mm and The tungsten mineralization |  | Zhang, Ya-Hui, Zhou, Jia-Xi, Tan, Shu-Cheng, Li, Hui-Min, Hao, Shuang, Jiang, Yong-Guo, He, Xiao-Hu (2020) Genesis of the oxidized Sn ores in the Gejiu district, Yunnan Province, SW China. Ore Geology Reviews, 121. 103474 doi:10.1016/j.oregeorev.2020.103474 | Journal (article/letter/editorial) | | oxidized Sn ores in the Gejiu district, Yunnan Province, SW China T ā Ya-Hui Zhanga,c, Jia-Xi Zhoua...includes western Guangxi Province, southwest Guizhou Province and southeast Yunnan Province (Fig. 1b) (Zhou and...distributed in the Gejiu area and include alkali-feldspar granite, porphyritic biotite granite and equigranular...chalcopyrite, arsenopyrite Tourmaline, garnet, diopside, K-feldspar, quartz, calcite, ļ¬uorite Skarnization, tourmalinization...Raman spectroscopy Tan et al. (2004) Quartz, feldspar, garnet, pyroxene Gangue mineral 4. Results |  | | Journal (article/letter/editorial) | | subhorizontal quartz-muscovite-Ā K-feldspar veins surrounded by early albitic and later K-feldspathic alteration...with muscovite in the veins or associated with K-feldspar in the alteration halos. Mineralized veins contain...the bulk ĀÆuid contains variable proportions of Na, K, Ca, Cl, and traces of Mg and Li. The following solids...magmatic-meteoric origin that were in equilibrium with K-feldspar and muscovite. These ĀÆuids resulted from the...almost pure albite to oligoclase (24 vol.%), K-feldspar which includes microcline, orthoclase and microperthite |  | | Journal (article/letter/editorial) | | been reported from the Sn-rich Phuket Supersuite, Thailand (Pollard et al., 1995). The RbāSr whole rock isochron...discontinuous quartz core, intermediate zone of blocky K-feldspar/perthite with or without further diversifications...diversifications, and a border zone of finer grained quartz, K-feldspar and muscovite. The mineralized, zoned pegmatites...intermediate zone, often in association with albitized K-feldspar/ perthite. Sometimes, cassiterite penetrates...penetrates along and across the cleavages of feldspar (Fig. 3a; at Govindpal) and muscovite (Fig. 3b; at Govindpal) |  | | Journal (article/letter/editorial) | | also enriched in Sn. The Manono deposit (Shaba province, DRC) hosts the largest pegmatite bodies on global...Maniema region (Kubitaka, Punia area) in Kivu province, DRC, are genetically connected with tin-bearing...15 m. Main minerals are represented by quartz, K-feldspar, albite, muscovite, lepidolite, elbaite, amblygonite...LĪ±), ZrO2 (Zr LĪ±), UO2 (U MĪ²), orthoclase (Al KĪ±, K KĪ±), NaScSiO4 (Sc KĪ±), stibiotantalite (Sb LĪ±), BiTaO4...detailed structural study. Rankamaite Rankamaite [(Na, K)6 Al3 (Ta, Nb)21 O60 ] occurs only rarely as aggregates |  | Che, X. D., Linnen, R. L., Wang, R. C., Groat, L. A., Brand, A. A. (2013) DISTRIBUTION OF TRACE AND RARE EARTH ELEMENTS IN TITANITE FROM TUNGSTEN AND MOLYBDENUM DEPOSITS IN YUKON AND BRITISH COLUMBIA, CANADA. The Canadian Mineralogist, 51 (3) 415-438 doi:10.3749/canmin.51.3.415 | Journal (article/letter/editorial) | | subhedral, and in planar contact with magmatic K-feldspar, plagioclase, and quartz. Compared to hydrothermal...plagioclase, 35 vol.% interstitial quartz, 10 vol.% K-feldspar, 10 vol.% hornblende, and up to 4 vol.% ragged...euhedral, and is intergrown with fresh plagioclase, K-feldspar, quartz, hornblende, and magnetite (Fig. 2)....in planar contact with magmatic plagioclase, K-feldspar, and quartz. Very weak irregular zones were...(a, b). Abbreviations: Ttn = titanite, Kfs = K-feldspar, Pl = Plagioclase, Qz = quartz, Hbl = Hornblende |  | Van Lichtervelde, M., Salvi, S., Beziat, D., Linnen, R. L. (2007) Textural Features and Chemical Evolution in Tantalum Oxides: Magmatic Versus Hydrothermal Origins for Ta Mineralization in the Tanco Lower Pegmatite, Manitoba, Canada. Economic Geology, 102 (2) 257-276 doi:10.2113/gsecongeo.102.2.257 | Journal (article/letter/editorial) | | hydrothermal fluid, that reacted with the blocky K-feldspar of the central zone. During the alteration event...Bird River subprovince of the Archean Superior province, in the southwestern part of the Canadian Shield...0361-0128/98/000/000-00 $6.00 Tanco: 50.26 N, 95.27 W Superior Province ince ubprov igo S Sach Lake Winnipeg Bird...~160 m). CG = coarse grained, qz = quartz, Kfd = K-feldspar, MQM = mica-quartz alteration, SQUI = spodumene-quartz...of coarse-grained (a few centimeters) quartz + K-feldspar (leopard rock) with minor tourmaline (mainly |  | Graupner, T, Kempe, U, Dombon, E, PƤtzold, O, Leeder, O, Spooner, E.T.C (1999) Fluid regime and ore formation in the tungsten(āyttrium) deposits of Kyzyltau (Mongolian Altai): evidence for fluid variability in tungstenātin ore systems. Chemical Geology, 154 (1) 21-58 doi:10.1016/s0009-2541(98)00123-5 | Journal (article/letter/editorial) | | literature shows that from high-temperature, Fe-rich, K-dominated brines cassiterite ores can precipitate...wolframite deposits located in the new tungsten province of the Mongolian Altai fit into this scheme ŽKempe...the surrounding biotite granite is characterized by K ; Na, NbrTa) 1, U - Th, LREE) HREE, and YrHo close...in Kyzyltau from the breakdown of biotite and Kāfeldspar is strongly suggested by the occurrence of albitized...deposits are good indications for a breakdown of hydrous Kāminerals ŽKreulen and Schuiling, 1982.. 5.5. REE and |
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