 | Thompson, J. F. H., Sillitoe, R. H., Baker, T., Lang, J. R., Mortensen, J. K. (1999) Intrusion-related gold deposits associated with tungsten-tin provinces. Mineralium Deposita, 34 (4) 323-334 doi:10.1007/s001260050207 | Journal (article/letter/editorial) | | exploration implications. 92 Bi, Te, Mo, As, Sb, W Bakke (1995) 349 12a As, Bi, Te, Mo, MoraÂvek (1995)...producer, has well-established characteristics (Bakke 1995) and occurs in an extensive belt of Late Cretaceous...gold mineralization at Fort Knox occurs in early pegmatite veins, sheeted quartz K-feldspar veins and late...three phases of porphyritic granite plus aplite/pegmatite dykes (Fig. 2). The predominant sheeted quartz...apart and re¯ect district-wide structural controls (Bakke Fig. 2 Representative geological section of the |  | Rhys, David, DiMarchi, Jack, Smith, Moira, Friesen, Robert, Rombach, Cameron (2003) Structural setting, style and timing of vein-hosted gold mineralization at the Pogo deposit, east central Alaska. Mineralium Deposita, 38 (7) 863-875 doi:10.1007/s00126-003-0372-1 | Journal (article/letter/editorial) | | syn-metamorphic intrusions. Rare steeply dipping, narrow, pegmatite dykes cut across tight F2 folds. These also exhibit...truncated by the shear vein, is a 1–3 m thick granite-pegmatite matrix, magmatitic breccia. b L1 1/2 shear vein...veins or quartzrich pegmatite, as is reported at the Fort Knox deposit by Bakke et al. (2000). Quartz-rich...Quartz-rich pegmatite may contain pyrrhotite, chalcopyrite and pyrite as disseminations, or as replacement...particularly Fort Knox, Dolphin, and Ryan Lode (Bakke 1995; Bakke et al. 2000; McCoy et al. 1997; McCoy 2000; |  | | Journal (article/letter/editorial) | | medium Inequigranular to weakly porphyritic Vugs, pegmatite segregation layers and networks FMG Medium to...®ne-grained aplite (Hortons) VFG ± internal (pegmatite) MCG (moderate to strong alteration)a Structurally...®ne-grained aplitic margin, an intermediate zone of pegmatite, and a core composed of coarse, subhedral quartz...from solely intrusion-hosted, such as Fort Knox (Bakke 1995) and Table 5 Correlation matrix of selected...unmineralized, a relationship analogous to Fort Knox (Bakke 1995). The Timbarra deposits are also located near |  | | Journal (article/letter/editorial) | | the Uppermost Allochthon (UmA) mostly in northern Norway. The Neoproterozoic and Cambrian history of this...á P.M. Ihlen Geological Survey of Norway, N-7491 Trondheim, Norway e-mail: tor.grenne@ngu.no F.M. Vokes...Engineering, Hùgskoleringen 6, N-7491 Trondheim, Norway host to two characteristic types of stratabound-stratiform...higher levels in the nappe pile, in southwestern Norway, the western Trondheim Region, the western Grong...in the western Grong District and in southwest Norway. Orthomagmatic ores occur in the form of PGE mineralisation |  | | Journal (article/letter/editorial) | | by Middle Cretaceous granodiorite and granite (Bakke, 1995; McCoy et al., 1997; Table 1). Reconnaissance...(pyrrhotite), low-sulfide (<3 vol %) ore assemblage, and pegmatite and aplite within the deposit. However, it is...a similar manner to that observed at Fort Knox (Bakke, 1995; McCoy et al., 1997) and Timbarra 0361-0128/98/000/000-00...Canada: Mineralium Deposita, v. 36, p. 563–582. Bakke, A.A., 1995, The Fort Knox “porphyry” gold deposit––Structurally..., Newberry, R.J., Layer, P.W., DiMarchi, J.J., Bakke, A., Masterman, J.S., Minehane, D.L., 1997, in Goldfarb |  | | Journal (article/letter/editorial) | | THE GEOLOG\' OF THE BERGEN DISTRICT, NORWAY. 39 difficult. It seems, however, that in spite of these...warmer epoch. V.-EXCURSION TO TH E BERGEN DISTRICT, NORWAY. THURSDAY, AUGUST 3RD, TO MOl'lDAY, AUGUST 21ST...the R .M.S. Aaro for Norway . August 5th. The Aaro reached Stavanger, in Norway, after a calm crossing...received by Dr. Kolderup, who welcomed them to Norway. Proceeding to the Geological Department, he exhibited...well as specimens of the minerals found in Western Norway. Finally, the members passed, somewhat rapidly |  | Dressel, Bárbara Carolina, Chauvet, Alain, Trzaskos, Barbara, Biondi, João Carlos, Bruguier, Olivier, Monié, Patrick, Villanova, Sandro Notto, Newton, José Bazille (2018) The Passa Três lode gold deposit (Paraná State, Brazil): An example of structurally-controlled mineralisation formed during magmatic-hydrothermal transition and hosted within granite. Ore Geology Reviews, 102. 701-727 doi:10.1016/j.oregeorev.2018.09.007 | Journal (article/letter/editorial) | | Textures (UST), along with abundant expression of pegmatite-rich pockets within granite that crops out close...processes as 604 ± 11 Ma (K-Ar muscovite in a pegmatite). Picanço (2000) also identified younger ages...late magmatic features, such as UST, aplite, pegmatite and stockscheider. Finally, these features were...mineralised veins (Figs. 4B, 15 and 16), iii) aplite-pegmatite pockets mainly observed in the upper part of drill...Pirajno, 2009). In the aplites and the aplite-pegmatite pockets, some portions present hydrothermal quartz |  | | Journal (article/letter/editorial) | | include the following: (1) the granite contains pegmatite segregations and is cut by aplitic dykes and zones...containing coarse, comb-textured quartz extend into a pegmatite zone; (3) arsenopyrite-bearing greisens dominated...occurring within an obvious progenitor (e.g. Fort Knox (Bakke 1995) and Dublin Gulch (Maloof et al. 2001)). In...and occurs in a variety of settings, including pegmatite, veins, greisens and skarns (e.g. East Kemptville...samples are indicated by the numbers. The important pegmatite feature occurs at the locality labelled SP-04 |  | | Journal (article/letter/editorial) | | et al., 2004), Fort Knox (169 Mt at 0.9 g/t Au: Bakke, 1995), Shotgun (~1 Moz: Rombach and Newberry, 2001)...peraluminous, and include associated aplite, pegmatite and lamprophyre dikes. Most of these plutons have...pyrite, and arsenopyrite), and the occurrence of pegmatite and aplite within the deposit. 0361-0128/98/000/000-00...of Economic Geologists Newsletter 61, p. 5–17. Bakke, A.A., 1995, The Fort Knox “porphyry” gold deposit:...Goldfarb, R.G., Smith, M., Roberts, P., Hulstein, R., Bakke, A.A., and Bundtzen, T.K., 2002, Geology, exploration |  | | Journal (article/letter/editorial) | | Beaty et al. 1978; Naeser et al. 1980; Murphy & Bakke 1993) show that apatite fission-track thermochronology...track length s.d. (Mm) Mt Painter block 51 Pegmatite 114 Granite 49 Gneiss 44 Granite 43 Gneiss 102...of South Australia 51, 391-397. MURPHY J. M. & BAKKE A. 1993. Low temperature thermal history of the |  | | Journal (article/letter/editorial) | | unstudied, intrusion-related U-Th, Be, REEbearing pegmatite, and polymetallic Ag-Sn-Bi-Pb-F vein occurrences...al., 1997). Strongly peraluminous aplite and pegmatite phases are also present. Biotite is the dominant...a small and variably porphyritic granite stock (Bakke, 1995). Sheeted, lowsulphide quartz±feldspar veins...cut the various phases of the Fort Knox stock (Bakke, 1995; McCoy et al., 1997). Also in the Fairbanks...al. (1994), Newberry et al. (1997) West (1954) Bakke (1995) McCoy et al. (1997) McCoy et al. (1997) Burton |  | | Journal (article/letter/editorial) | | monzonite) to greater than 2.2 wt% (in a late-stage pegmatite dike). Chlorine, by contrast, shows a more restricted...between 1.0 (syenite and monzonite) and 0.6 wt% (pegmatite). Apatite inclusions within anhydrous phenocrysts...hydrothermal activity recorded in biotite from a late pegmatite dike (0.1 to ±0.1). A decrease in log aHCl/ aHF...corrected log aHCl/ aHF vs. XMg in biotite from pegmatite sample RD-96-EL20a. Note the apparent trend of...pluton, and subsequent hydrothermal activity (pegmatite dikes), record a restricted range in U±Pb and |  | Yuan, Shunda, Peng, Jiantang, Hu, Ruizhong, Li, Huimin, Shen, Nengping, Zhang, Dongliang (2008) A precise U–Pb age on cassiterite from the Xianghualing tin-polymetallic deposit (Hunan, South China) Mineralium Deposita, 43 (4) 375-382 doi:10.1007/s00126-007-0166-y | Journal (article/letter/editorial) | | major tin minerals in all tin deposits including pegmatite-type, greisen-type, skarn-type, sulfide-type tin...porphyry Mo deposit and the Lipovy Log rare metal pegmatite, central Urals, Russia. Miner Depos 38:251–257...manganoan–tantalian cassiterite, Annie Claim #3 granites pegmatite, Southeastern Manitoba, Canada. Can Mineral 38:685–694... Hart CJR, Rombach CS, Thompson JFH, Smith MT, Bakke AA, Goldfarb, RJ (2002) Absolute timing of sulfide |  | | Journal (article/letter/editorial) | | Manuscript Geology and chemistry of Variscan-type pegmatite systems (SE Germany) With special reference to...Dill, Geology and chemistry of Variscan-type pegmatite systems (SE Germany) With special reference to...pertain. Geology and chemistry of Variscan-type pegmatite systems (SE Germany) - With special reference...D-30167 Hannover, Germany Abstract: The geology of pegmatite systems encompasses lithology, shape, and structure...Zn-Cu-Bi-Rb-Nb in), (2) supergene (Zr-Ti in). Key words: Pegmatite; lithology; structural geology; chemistry; Variscan-type |  | | Journal (article/letter/editorial) | | 3). Sample SC20W is from a K-feldspar-quartz pegmatite identical to SC15W, suggesting a similar genetic...Devonian Walker pegmatite sample SC20W has not, and other samples from the same pegmatite did yield reproducible...Scotia. A: Molybdenitebearing K-feldspar-quartz pegmatite from the Walker Deposit. Whole rock was crushed...in the Rogaland high-temperature granulites, S Norway. Earth Planet. Sci. Lett. 208, 181–195. Brenan...porphyry Mo deposit and the Lipovy Log rare metal pegmatite, central Urals, Russia. Mineral. Dep. 38, 251–257 |  | | Journal (article/letter/editorial) | | Undersøkelse, Leiv Eirikssons vei 39, 7491 Trondheim, Norway Received 15 April 2004; accepted 2 June 2005 Available...age of 1895 F 6 Ma with the formation of later pegmatite–aplite at 1875 F 6 Ma. The Allebuoda (Björntjärn)...drill core samples of molybdenite-bearing aplite–pegmatite–granite. These two deposits were previously described...study. Re–Os data acquired for late crosscutting pegmatite dikes at the Aitik deposit may extend the close...intermingled supracrustal gneisses, lenses of granite, pegmatite–granite, aplite–granite, and aplite, and the absence |  | | Journal (article/letter/editorial) | | (Skaarup, 1974) and Bjellatind areas (Larsen, 1991) in Norway, and the Brazilian Shield (Einaudi et al., 1981)...and a zoned rare element (Li, P, and Sn) aplite-pegmatite field occur from the Granitic Complex northward...(Fig. 1). At the Feli mine, undeformed lithium pegmatite dikes crosscut folded cassiterite-quartz stockwork...Arribas, 1988). Both cassiterite-quartz veins and pegmatite dikes crosscut skarn at the Riba de Alva mine...alteration, and are commonly associated with pegmatite dikes (Meinert et al., 1980; Newberry and Einaudi |  | | Report (issue) | | (Laksådalen, Tørdal). Molybdenite in 1) aplite and 2) pegmatite. Molybdenite in aplite is seen -most frequent...grains where the veins wedge out. Molybdenite in pegmatite and pegmatitic transitional types occurs as small...«gangfjell» deposits of type 11. B. enveloping a pegmatite lens (Kvina) . C. large veins and lenses of the...30° E is interseeted by a pegmatite dyke of type P. South of the pegmatite, at shaft 4, the vein system...forekomsten er nevnt. The molybdenum deposits of Norway. Fig. 3. Gangforekomster i den ca. 300 km lange |  | | Journal (article/letter/editorial) | | fractionated, I-type granitoids cut by goldbearing pegmatite and aplite dikes (e.g., Emerald Lake: Duncan,...al., 2000 and Goldfarb et al., 2004; Fort Knox: Bakke, 1995). Sulfides are not common and hydrothermal...monzogranite pluton, with associated aplite and pegmatite dikes (Allibone et al., 1998; McCuaig et al.,...associated with magnetite-series granites and granite–pegmatite complexes in the Southern Cross Province. Hagemann...2630 Ma) “post-orogenic”, I-type granitic and pegmatite intrusions (Mueller et al., 2004). The mineralized |  | Wilson, A. J., Cooke, D. R., Stein, H. J., Fanning, C. M., Holliday, J. R., Tedder, I. J. (2007) U-Pb and Re-Os Geochronologic Evidence for Two Alkalic Porphyry Ore-Forming Events in the Cadia District, New South Wales, Australia. Economic Geology, 102 (1) 3-26 doi:10.2113/gsecongeo.102.1.3 | Journal (article/letter/editorial) | | Colorado, and Geological Survey of Norway, 7491 Trondheim, Norway C. MARK FANNING, Research School of...gold-copper porphyry deposits (Ridgeway, Cadia Quarry, Cadia Hill, and Cadia East) and two related ironcopper-gold...stock that lies immediately southwest of the Cadia Quarry deposit are early Late Ordovician (456–454 Ma)...quartz monzonite porphyry stock that hosts the Cadia Quarry and Cadia Hill orebodies and an intermineral quartz...episodes of mineralization associated with the Cadia Quarry deposit, suggesting a complex history between 460 |  | | Journal (article/letter/editorial) | | and time to a suite of magnetite series granite-pegmatite complexes. These granites, dated regionally at...Pb-Pb isochron obtained from a synmineralization pegmatite dike (Bloem et al., 1995). The 1231 1232 MUELLER...Archean (2.66–2.60 Ga), magnetite series granite-pegmatite complexes. Regional Geology The Southern Cross...aureoles of aplite-pegmatite dikes and sills. Third-generation granite-pegmatite complexes have been...hornblende-cummingtonite aggregates. Most of the aplite and pegmatite dikes surrounding the granite also display thin |  | Pak, Sang Joon, Choi, Seon-Gyu, Oh, Chang-Whan, Heo, Chul-Ho, Choi, Sang-Hoon, Kim, Sung-Won (2006) Genetic Environment of the Intrusion-related Yuryang Au-Te Deposit in the Cheonan Metallogenic Province, Korea. Resource Geology, 56 (2) 117-132 doi:10.1111/j.1751-3928.2006.tb00273.x | Journal (article/letter/editorial) | | in Precambrian gneiss and closely related to pegmatite. The mineralized veins display massive quartz...mineralogy, weak alteration, an association with pegmatite dikes and Jurassic emplacement ages. However,...altered 4114±48 138.4±3.3 wallrock 1 age of pegmatite 1 age of Au deposits 180 170 3 3 6 3 ...showing the formation age of the gold deposits and pegmatite from the western part of central Korea. The numbers...References of K-Ar muscovite and sericite age of pegmatite and gold deposits: Park et al. (1986); Shimazaki |  | Hart, Craig J. R., Mair, John L., Goldfarb, Richard J., Groves, David I. (2004) Source and redox controls on metallogenic variations in intrusion-related ore systems, Tombstone-Tungsten Belt, Yukon Territory, Canada. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 95 (1). 339-356 doi:10.1017/s0263593300001115 | Journal (article/letter/editorial) | | or peraluminous phases. Late-stage aplite or pegmatite dykes are locally common, as are tourmaline veinlets...3·94 2·0 9·81 0·16 0·005 1·8 0·4 99·8 Dublin pegmatite dyke 83 178 16 65 12 89 20 1·5 15 221 438 23·0...0·446 8·4 1·53 377 0·79 8 0·1 29·1 5·21 Dublin pegmatite dyke 2·18 1055 781 0·5 0·1 4 0·8 8·1 1370...Goldfarb, R. J., Smith, M., Roberts, P., Hulstein, R., Bakke, A. A., & Bundtzen, T. K. 2002. Geology, exploration..., Newberry, R. J., Layer, P., DiMarchi, J. J., Bakke, A., Masterman, J. S. & Minehane, D. L. 1997. Plutonic-related |  | | Journal (article/letter/editorial) | | or peraluminous phases. Late-stage aplite or pegmatite dykes are locally common, as are tourmaline veinlets...3·94 2·0 9·81 0·16 0·005 1·8 0·4 99·8 Dublin pegmatite dyke 83 178 16 65 12 89 20 1·5 15 221 438 23·0...0·446 8·4 1·53 377 0·79 8 0·1 29·1 5·21 Dublin pegmatite dyke 2·18 1055 781 0·5 0·1 4 0·8 8·1 1370...Goldfarb, R. J., Smith, M., Roberts, P., Hulstein, R., Bakke, A. A., & Bundtzen, T. K. 2002. Geology, exploration..., Newberry, R. J., Layer, P., DiMarchi, J. J., Bakke, A., Masterman, J. S. & Minehane, D. L. 1997. Plutonic-related |  | Selby, D., Conliffe, J., Crowley, Q. G., Feely, M. (2008) Geochronology (Re–Os and U–Pb) and fluid inclusion studies of molybdenite mineralisation associated with the Shap, Skiddaw and Weardale granites, UK. Applied Earth Science, 117 (1) 11-28 doi:10.1179/174327508x309669 | Journal (article/letter/editorial) | | cupola.20 The granite contains veins of quartz pegmatite and aplite, a number of which are tourmaline-bearing...447 m, a 3 cm wide molybdenite bearing quartz pegmatite vein cuts the granite fabric. Molybdenite mineralisation...Weardale granite was 410¡10 Ma, intrusion of post-pegmatite vein aplites at 390¡8 Ma, and that hydrothermal...molybdenite has only been observed at 447 m in a quartz pegmatite vein in the Rookhope core (SSK0576, Fig. 4). Molybdenite...Molybdenite is the predominant ore mineral in this pegmatite vein occurring as ,1 cm rosettes with 2–5 mm grains |
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