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greisen

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Journal Article
Published: 23 February 2021
Bulletin de la Société Géologique de France (2021) 192 (1): 2.
...Gaëtan Launay; Stanislas Sizaret; Philippe Lach; Jérémie Melleton; Éric Gloaguen; Marc Poujol The W-Sn Panasqueira ore deposit is a magmatic-hydrothermal system, which includes a high grade quartz-vein type mineralization and underneath disseminated greisen-type mineralization located in the upper...
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Journal Article
Published: 03 February 2021
Mineralogical Magazine (2021) 85 (2): 172–188.
...Ping Wang; Thomas P. Gray; Zhe Li; Evan J.D. Anderson; Julien Allaz; Joseph R. Smyth; Alan E. Koenig; Lijian Qi; Yan Zhou; Markus B. Raschke Abstract Beryl from Xuebaoding, Sichuan Province, western China is known for its unusual tabular habit and W–Sn–Be paragenesis in a greisen-type deposit...
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Journal Article
Journal: Economic Geology
Published: 18 December 2020
Economic Geology (2021) 116 (1): 147–167.
... earth element and Sn concentrations of tourmaline in the greisen deposits together with δ 18 O of coprecipitated quartz indicate that exsolution of a late-stage, Cl-rich fluid from the Ardlethan granite led to cassiterite mineralization in these deposits. In contrast the Fe/(Fe + Mg) and initial ε Nd...
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Journal Article
Journal: Economic Geology
Published: 01 May 2020
Economic Geology (2020) 115 (3): 603–625.
...Wei Mao; Hong Zhong; Jiehua Yang; Yanwen Tang; Liang Liu; Yazhou Fu; Xingchun Zhang; Kyaing Sein; Soe Myint Aung; Jie Li; Le Zhang Abstract The Kuntabin Sn-W deposit, located in southern Myanmar, is characterized by abundant greisen-type and quartz vein-type cassiterite and wolframite...
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Journal Article
Published: 22 April 2020
Canadian Journal of Earth Sciences (2020) 57 (7): 814–839.
... with a complex mineralized hydrothermal system containing endogranitic Sn–W–Mo–Zn–Bi–U-bearing greisen/sheeted veins within the pluton. Magmatic monazite and zircon U–Pb ages obtained by LA–ICP–MS overlap at 368 Ma, recording a Late Devonian crystallization age for the MDG. Although discrimination, outside...
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Journal Article
Published: 01 February 2020
Russ. Geol. Geophys. (2020) 61 (2): 155–173.
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Journal Article
Published: 01 August 2019
Russ. Geol. Geophys. (2019) 60 (8): 890–910.
... and geophysical data). This batholith is cut by the East Kalguty belt of rare-metal ongonite–elvan dikes spatially and temporally associated with the East Kalguty quartz-vein–greisen Mo–W deposit. Geological and petrogenetic studies along with published and our new results of geochronological (U/Pb zircon, Re/Os...
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Journal Article
Journal: Economic Geology
Published: 01 February 2019
Economic Geology (2019) 114 (1): 153–163.
... of tourmaline, which supported the prevailing magmatic-hydrothermal fluid model for this deposit ( Codeço et al., 2017 ). However, the greisen body at Panasqueira, which should give the best estimate of a magmatic-hydrothermal fluid, contains no tourmaline and was not included in that study. Therefore...
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Journal Article
Journal: Economic Geology
Published: 01 August 2018
Economic Geology (2018) 113 (5): 1193–1208.
... mass spectrometry (SIMS) zircon U-Pb, muscovite Ar-Ar, and molybdenite Re-Os age determinations that constrain the timing relationships among granitic magmatism, greisenization, and W mineralization related to the Zhangjialong deposit. The molybdenite Re-Os age of the W mineralization is 160.2 ± 2.2 Ma...
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Journal Article
Published: 01 January 2018
American Mineralogist (2018) 103 (1): 39–54.
... “sulfide” stage, involving for the first time a polyphase emplacement of the mineralization. Li-micas from the underlying granite, greisen, and the different stages represented in the veins, were studied. The chemistry of the micas (characterized by intermediate compositions between phlogopite-zinnwaldite...
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Journal Article
Published: 01 September 2016
The Canadian Mineralogist (2016) 54 (5): 1147–1173.
...Rémy S. Poulin; Andrew M. McDonald; Daniel J. Kontak; M. Beth McClenaghan Abstract The relationship between cathodoluminescence (CL) response and chemical composition of scheelite from a variety of ore-deposit settings ( e.g ., orogenic Au, skarn, porphyry-related, greisens, VMS) was investigated...
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Journal Article
Published: 03 September 2013
Canadian Journal of Earth Sciences (2013) 50 (11): 1147–1163.
...Daniel J. Kontak; Richard J. Horne; Robert A. Creaser; Joseph A. Petrus; Douglas Archibald Abstract The occurrence of ca. 360 Ma greisen-related molybdenite mineralization in the Clayton Hill biotite–muscovite leucomonzongranite (<1 km 2 ) is unusual for the southwestern Meguma terrane...
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Journal Article
Journal: Economic Geology
Published: 01 January 2013
Economic Geology (2013) 108 (1): 79–110.
.... In addition to typical seafloor VHMS deposits, this district contains greisen- and vein-hosted Mo-Cu-Zn-Sn mineral occurrences that are contemporaneous with VHMS orebodies and are hosted by the Strelley granite complex, which also drove VHMS circulation. Hence the Panorama district is a natural laboratory...
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Journal Article
Published: 01 December 2012
The Canadian Mineralogist (2012) 50 (6): 1573–1587.
... internal structure with a wall zone, an intermediate zone, and a prominent quartz core. The essential minerals of the pegmatite are quartz, K-feldspar, plagioclase, muscovite, biotite and beryl. Phosphates, pyrite, arsenopyrite and rutile occur as accessory minerals associated with greisen zones developed...
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Journal Article
Published: 01 August 2012
The Canadian Mineralogist (2012) 50 (4): 1131–1148.
... of cassiterite by hydrolysis of SnF 4 . Tungsten was probably transported as H 2 WO 4 , resulting from the reaction of WF 6 with H 2 O. A similar behavior of Nb and Ta is suggested. The hydrolysis of fluorides leads to a strong enrichment of fluid in HF, which induced albite instability and formation of greisens...
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Journal Article
Published: 01 August 2012
American Mineralogist (2012) 97 (8-9): 1452–1459.
... . As temperature increases, topaz becomes stable at higher HF concentrations. Application of the results to the Akchatau greisen W-Mo deposit provides an explanation of the observed zonation as a manifestation of metasomatic processes and imposes constraints on the mechanism and conditions of formation...
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Journal Article
Published: 01 July 2012
Journal of the Geological Society (2012) 169 (4): 489–500.
...–biotite I-type granodiorite–granites and felsic biotite–K-feldspar (± garnet ± tourmaline) granites associated with abundant tin mineralization in greisen-type veins. New ion microprobe U–Pb dating results from Phuket Island show zircon core ages of 212 ± 2 and 214 ± 2 Ma and a thermal overprint with rims...
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Journal Article
Journal: Economic Geology
Published: 01 March 2012
Economic Geology (2012) 107 (2): 383–384.
... and theoretical studies on ore fluids and granite-related mineralized systems. As a result of this, the editors selected nine papers for Granite-Related Ore Deposits . These have been arranged in groups as follows: granite-pegmatite, skarn and greisen-veins, porphyry, orogenic gold, intrusion-related, epithermal...
Journal Article
Published: 01 February 2012
Russ. Geol. Geophys. (2012) 53 (2): 147–168.
... for Th, 2.7 for Rb, 2.5 for Cs, and 2 for F (CI ≈ 9). The final-stage granites in the Trekhgolovyi pluton are associated with quartz-muscovitic (±topaz, fluorite) greisens, which contain cassiterite, columbite, ilmenorutile, wolframite, bismuthinite, and other minerals. The data suggest...
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Journal Article
Published: 01 March 2011
Russ. Geol. Geophys. (2011) 52 (3): 290–306.
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