 | | Journal (article/letter/editorial) | | Netherlands TON-MERGEL-KALK-ZYKLEN IM SUDBELGISCHEN NAMUR K U R T F I E G E UND W I L L I A M V A N L E C...beyrtchtanum Zones of the Lower Namurian in the area of Andenne (Belgmm) where they show the so-called Chokler...Millstone Grit and the Lower Coal Measures In Belgium. In the area extending on both sides of the Franco-Belgian...limestone bands are more strongly developed than in Andenne. The facies of the same strata is also depicted...of four, have also been observed in the area of Andenne in the Homoceratoides prerettculatus and the Homoceras |  | | Journal (article/letter/editorial) | | humaine, Bat. B18, Allée du Six-Août, B-4000 Liège, Belgium ‡Géosciences Environnement Toulouse (GET), Observatoire... bd de Lauzelles, 65, B1348 Louvain-la-Neuve, Belgium (Received 3 September 2012; accepted 28 June 2013;...Viséan were formerly considered as series and in Belgium were divided into two (Hastarian and Ivorian) and...of the Tournaisian and Viséan is not limited to Belgium and the surrounding areas. It can be applied through...intervals of c. 5–8 Ma. Keywords: Mississippian, Belgium, stratigraphy, stage. 1. Introduction The Tournaisian |  | | Journal (article/letter/editorial) | | B-3030 Heverlee, Belgium Abstract. Peloids from sediment-hosted Zn-Pb deposits in Belgium, Ireland and Poland...Poland are composed of Zn-calcite, siderite, smithsonite, silica, pyrite, melnikovite, sphalerite, galena...and rhythmic layers of sulfides (Ramdohr 1969). Calcite peloids are common in marine carbonates. They vary...fossil bacterial clumps and is surrounded by a calcite shell (Chafetz 1986). Peloidal deposits contain...deposits The most important Zn-Pb deposits in Belgium are present at the intersections of faults and |  | | Journal (article/letter/editorial) | | Fluid Inclusionand StableIsotopeEvidence lAIN M. SAMSON*AND MICHAELJ. RUSSELL Departmentof AppliedGeology...placescontainsone to five solidphases,the commonestof which is calcite. Single-phase liquidinclusions are commonest in...exhalativebase 0361-0128/87/654/371-2452.50 371 372 I.M. SAMSON AND M. J. RUSSELL A c c c -o.. '"-'"-'"""""'"'""'•...ofore(Taylor andAndrew, 1978;Taylor, 374 I.M. SAMSON ANDM.J.RUSSELL 1kin. •, • • ,•.•.• N SHAtLEE...orebodies occur at the base of this unit barite,calcite,dolomite,and quartz.Chalcopyrite, (Fig. lB) and |  | Nagy, Zsolt R., Somerville, Ian D., Gregg, Jay M., Becker, Stephen P., Shelton, Kevin L. (2005) Lower Carboniferous peritidal carbonates and associated evaporites adjacent to the Leinster Massif, southeast Irish Midlands. Geological Journal, 40 (2) 173-192 doi:10.1002/gj.999 | Journal (article/letter/editorial) | | Wales Platform, south of St. George’s Land, and in Belgium, south of the Brabant Massif. The presence of evaporites...age-equivalent peritidal sequences in South Wales and East Belgium; and (6) ascertain the influence of dense saline...and potassium ferricyanide for discriminating calcite from dolomite. Copyright # 2005 John Wiley & Sons...e. the Lower Viséan of the Vesdre Formation, Belgium by Swennen and Viaene (1986, plate 2H). Interpretation...frequently resedimented. Early dolomitization of the calcite matrix was probably penecontemporaneous with the |  | | Journal (issue) | | voor de verzamelaars in de groeve Gralex in Beez, Namur, België. Foto Albert vercammen Geonieuws 25(4)...+33/3 89586807. Bois de Saint-Pierremont – Site Samson Het mijnbouwpad door het Bois de Saint-Pierremont...s. Na een kleine wandeling bereikt men de Site Samson. Hier worden archeologische opgravingen verricht...tot de mijngangen van de Samson mijn. Ook de toegang tot de onderste Mine Samson mondt op deze site uit...komt men langs verschillende pingen en de mijnen Samson 4, 6, 7,… De laatste bestaat uit 3 mijngangen |  | Diallo, Mamadoudjan, Bouabdellah, Mohammed, Levresse, Gilles, Yans, Johan, Castorina, Francesca, Klügel, Andreas, Mouhagir, Mohamed, El Mouden, Salim, Maacha, Lhou (2021) Mineralogy, Fluid Inclusion, and C-O-Sr Isotope Geochemistry to Unravel the Evolution of the Magmatic-Hydrothermal System at the Igoudrane Silver-Rich Deposit (Imiter District, Eastern Anti-Atlas, Morocco) Minerals, 11 (9) 997 doi:10.3390/min11090997 | Journal (article/letter/editorial) | | nt (ILEE), University of Namur, 61 rue de Bruxelles, B-5000 Namur, Belgium; johan.yans@unamur.be Dipartimento...sulfides and sulfosalts + calcite ± fluorite ± dolomite; and (3) late quartz + calcite + base-metal sulfides...unique in that the gangue minerals are dominated by calcite and fluorite instead of dolomite and quartz, and...occurrence of a muscovite-chlorite ± epidote ± calcite ± quartz mineral assemblage provides evidence that...High-grade monomict breccia with fragments of calcite cemented by native silver. (D) Geologic map of |  | | Journal (article/letter/editorial) | | Zn±Pb mineralising ¯uids in the Variscides of Belgium Received: 26 April 2000 / Accepted: 22 November...deposits in the Verviers Synclinorium (eastern Belgium) and in Cretaceous vein calcites at the Variscan...U.Leuven, Celestijnenlaan 200C, 3001 Heverlee, Belgium e-mail: wouter.heijlen@geo.kuleuven.ac.be Fax:...southern Belgium, or of Palaeozoic high-salinity ¯uids in western Europe (Dejonghe et al. 1982; Samson and...and Russell 1992). At the Variscan front zone in Belgium, high-salinity ¯uids were expelled during several |  | Yang, Fan, Chen, Wei, Kynicky, Jindrich, Ying, Yuancan, Bai, Tian (2021) Combined In Situ Chemical and Sr Isotopic Compositions and U–Pb Ages of the Mushgai Khudag Alkaline Complex: Implications of Immiscibility, Fractionation, and Alteration. Minerals, 11 (5) 450 doi:10.3390/min11050450 | Journal (article/letter/editorial) | | Sr ratios obtained for all types of apatite and calcite within carbonatite show limited variation (0.70572–0...magnetite-apatite-enriched rocks and syenite as well as calcite in carbonatite together with the bulk rock chemical...12 kV and a current density of about 300 µA for calcite and apatite with an exposure time of up to 3s....Ketcham [32]. In situ trace element analyses for calcite and apatite were conducted using a RESOlution 193...analytical uncertainty for most trace elements in calcite and apatite was within 10% and was better than |  | Poot, Julien, Verhaert, Michèle, Dekoninck, Augustin, Oummouch, Abdellah, El Basbas, Abdelaziz, Maacha, Lhou, Yans, Johan (2020) Characterization of Weathering Processes of the Giant Copper Deposit of Tizert (Igherm Inlier, Anti-Atlas, Morocco) Minerals, 10 (7) 620 doi:10.3390/min10070620 | Journal (article/letter/editorial) | | Life-Earth-Environment (ILEE), Université of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium; michele-alexandra.verhaert@unamur...Geology Department of the University of Namur (Namur, Belgium) and at the Laboratorio Petrografico (OMT...at the Microscopy Service of the University of Namur. Geochemical analyses were carried out on twenty-five...RETSCH PM 100 planetary ball mills (University of Namur) in order to obtain the maximum 125 µm grain size...dolostone made up of dolomite, calcite, quartz and muscovite. Calcite and This is a relatively pure dolostone |  | | Journal (issue) | | and other silver minerals as well as wonderful calcite, fluorite, and pink apophyllite specimens: about...samsonite emerged from just two pockets in the Samson mine. St. Andreasberg is also known for its fine...much-coveted (and now very elusive) calcite specimens, with calcite crystals displaying nearly 400 different...Andreasberg District’s renowned Samson mine ceased in 1910, but in 1950 the Samson Pit Mining Museum opened...since 2001 the Harz Roller Canary Museum, at the Samson mine pithead, has entertained tourists by celebrating |  | | Journal (article/letter/editorial) | | fluid inclusions from Oka, Quebec, Canada IAIN M. SAMSON,’A. E. WILLIAMS-J• NES,~and WEINING LIU’ ‘Department...February 10, 1995 ) Abstract-Apatite and calcite from calcite carbonatites at Oka, Quebec, Canada, contain...chemistry of primary fluid inclusions in apatite and calcite from the Oka carbonatite in Quebec, the results...on carbonatites, little information 1979 I. M. Samson. A. E. U‘illiams-Jones. 1980 two composite rings...The Oka carbonatites are mostly coarse-grained calcite carbonatites which contain minor or accessory aegirine |  | | Journal (article/letter/editorial) | | Mineralization in the Snowbird Deposit, Montana IAIN M. SAMSON,† Department of Earth Sciences, University of Windsor...characterized by very coarse grained hydrothermal quartz, calcite, and fluorite. Also, the rare mineral parisite-(Ce)...chalcopyrite; and calcite-dominant “Snowbird-type” veins that contain quartz, calcite, and ankerite ± fluorite...other ankerite-bearing veins, particularly the calcite-dominant (Snowbird) subtype, on the basis of similarities...Cordillera from Canada to Mexico, 1727 1728 SAMSON ET AL. Cretaceous - Early Tertiary plutons Lolo |  | Bouabdellah, Mohammed, Boukirou, Wissale, Potra, Adriana, Melchiorre, Erik, Bouzahzah, Hassan, Yans, Johan, Zaid, Khadra, Idbaroud, Mohammed, Poot, Julien, Dekoninck, Augustin, Levresse, Gilles (2021) Origin of the Moroccan Touissit-Bou Beker and Jbel Bou Dahar Supergene Non-Sulfide Biomineralization and Its Relevance to Microbiological Activity, Late Miocene Uplift and Climate Changes. Minerals, 11 (4) 401 doi:10.3390/min11040401 | Journal (article/letter/editorial) | | Environment Department, University of Liège, 4000 Liège, Belgium; Hassan.Bouzahzah@uliege.be Institute of Life-Earth-Environment...Life-Earth-Environment (ILEE), University of Namur, 5000 Namur, Belgium; johan.yans@unamur.be (J.Y.); julien...chalcopyrite, accompanied by barite, celestite, and calcite as the main gangue minerals. Minerals 2021, 11...and Environment (GeMMe) of University of Liège (Belgium). The SEM-EDS analyses were carried out using a...Corporation, Massachusetts, USA) at the University of Namur (Belgium). Carbon and oxygen isotope analyses were carried |  | | Journal (article/letter/editorial) | | Stratified Mineralization G. MONSEUR, and J. P~L Li&ge, Belgium The particularly well developed reef-type cyclical...the Givetian stage of the Dinant sync!inorium (Belgium), is discussed in detait with respect to the various...authors (SNYDER and EMERY 1956; SCHNEIDER 1964; SAMSON 1965; MAUCHER and SCHNEIDER 1967). In this paper...widely represented in the Dinant synclinorium in Belgium. The sedimentary series patti- cularly well developed...(coral, crinoidal and shell detritus). The sparry calcite cement, which is clayey at the base of Unit II |  | | Journal (article/letter/editorial) | | from fluid inclusions Quebec, Canada: IAINM. SAMSON,’WEINING LIU,’ and ANTHONY E. WILLIAMS-JONES’ ‘Department...Abstract-Fluid inclusions in apatite, monticellite, and calcite from the Oka carbonatite complex generally comprise...contain a variety of trapped solids, including calcite, strontianite, nahcolite, and mirabilite. Microthermometry...the host minerals was monticellite + apatite -+ calcite, which, when combined with fluid inclusion data...are mostly coarse-grained calcite carbonatites, composed mainly of calcite and minor or accessory aegerine-augite |  | Bouabdellah, M., Sangster, D. F., Leach, D. L., Brown, A. C., Johnson, C. A., Emsbo, P. (2012) Genesis of the Touissit-Bou Beker Mississippi Valley-Type District (Morocco-Algeria) and Its Relationship to the Africa-Europe Collision. Economic Geology, 107 (1) 117-146 doi:10.2113/econgeo.107.1.117 | Journal (article/letter/editorial) | | Bouladon, 1949; Claveau et al., 1952; Voirin, 1965; Samson, 1965, 1973; Touahri, 1983) without attempting...ore derived from magmatic basement rocks, whereas Samson (1965, 1973) favored an initial syngenetic origin...Regional geology simplified from Voirin (1965), Samson (1973), Owodenko (1976), and Valin and Rakus (1979)...Source of data Touahri (1991) Eyssautier (1952) Samson (1973) Rajlich (1983) Data supplied by CMT* Data...surrounded by shallow-water carbonate platforms (Samson, 1973). Profiles across this structure show that |  | | Journal (article/letter/editorial) | | Kilbride, Glasgow, G75 0QF, United Kingdom AND I. M. SAMSON Department of Earth Sciences, University of Windsor...the ZnPb-Ba deposits, principally Silvermines (Samson and Russell, 1987), Tynagh (Banks and Russell,...suggest that mixing of the two fluids occurred (Samson and Russell, 1983, 1987; Banks and Russell, 1992)...limestone that produced pink saddle dolomite and calcite in vugs and fractures. This “hydrothermal dolomite”...infilled by postdepositional lime mud and sparry calcite, are common. The main Irish Midlands basin was |  | Walter, Benjamin F., Steele-MacInnis, Matthew, Giebel, R. Johannes, Marks, Michael A.W., Markl, Gregor (2020) Complex carbonate-sulfate brines in fluid inclusions from carbonatites: Estimating compositions in the system H2O-Na-K-CO3-SO4-Cl. Geochimica et Cosmochimica Acta, 277. 224-242 doi:10.1016/j.gca.2020.03.030 | Journal (article/letter/editorial) | | mostly presented data for fluid inclusions hosted in calcite, fluorite, apatite and olivine/monticellite, with...Andersen, 1986; Nesbitt and Kelly, 1977; Samson et al., 1995a; Samson et al., 1995b; Williams-Jones and Palmer...Bühn et al., 2002). While fluid inclusions in calcite and monticellite have been reported to be of secondary...apatite cores (Nesbitt and Kelly, 1977; Samson et al., 1995a; Samson et al., 1995b; Williams-Jones and Palmer...Metzger et al., 1977; Aldous, 1980; Andersen, 1986; Samson et al., 1995a; Bühn and Rankin, 1999; Bühn et |  | | Journal (article/letter/editorial) | | active sites on ␣-Fe2O3 at pH 3 and pH 6 SHERRY D. SAMSON*,† and CARRICK M. EGGLESTON Department of Geology...the respective trivalent metal ions (Samson et al., 2000). Samson et al. (2000) related the pH-dependence...in the dissolution and growth of salts such as calcite and barite (Putnis et al., 1995; Liang et al.,...in diameter (Sugimoto et al., 3675 3676 S. D. Samson and C. M. Eggleston 1993), confirmed by SEM. The...they relate to mineral dissolution may be found in Samson et al. (2000). The experimental apparatus, reagents |  | | Journal (article/letter/editorial) | | geologic, Celestijncnlaan 200C, B-3030 Heverlce, Belgium Abstract. Ore-stage carbonates of the Silvermines...fractured and brecciated at the base Fe-free calcite, Fe calcite, silicification Waulsortian reef and cherts...cherts present at its base RFMC, blocky Fe-free calcite Waulsortian reef limestone 30-125 Upper part:...barite breccia Reef: RFMC, Fe calcite in fractures Breccias: Fe calcite, Fe dolomite, siderite, silicification...and silicified interbeddings at the top Calcite, Fe calcite cements and replacements Muddy limestone |  | | Journal (article/letter/editorial) | | are widely observed in dolomite (and sometimes calcite) cements within Courceyan-Arundian−age rocks, indicating...underwent early diagenesis that included extensive calcite cementation and dolomitization (Lees and Miller...replacive, breccia-cementing and vein- and vug-filling calcite and dolomite, plus variable barite and minor quartz...deform under lower internal overpressures (e.g.,, calcite, barite). In addition, modification is more likely...Assemblage C3 di s s em i nated py ri te sparry calcite quartz/chalcedony magnetite-hematite barite shal |  | | Journal (article/letter/editorial) | | temperatures of ~480 °C) to hydrothermal stage II (calcite, quartz, barite, and fluorite crystallization at...Mountain Pass in the USA, Castor 2008; Oka in Canada, Samson et al. 1995a, 1995b; Uganda and Italy, Stoppa and...(P)–temperature (T) conditions (Rankin 2003; Roedder 1984; Samson et al. 1995a, 1995b; Shu and Liu 2019; Smith and...biotite, aegirine–augite, arfvedsonite, fluorite, calcite, barite, quartz and a small amount of pyrite and...biotite, K-feldspar, aegirine-augite, arfvedsonite, calcite, quartz, fluorite, barite and bastnäsite-(Ce) from |  | St. Seymour, Karen, Tombros, Stylianos, Mastrakas, Nickolaus, Zouzias, Dimitrios, Spry, Paul G., Dénès, Géorge, Kranidiotis, Prokopis (2009) Scheelite skarn mineralization associated with the Tinos pluton, Cyclades. Neues Jahrbuch für Mineralogie - Abhandlungen, 186 (1) 37-50 doi:10.1127/0077-7757/2009/0135 | Journal (article/letter/editorial) | | °C, of primary inclusions in quartz from quartz-calcite veinlets formed by carbofracturing from ~ 400 to...salinity ~14 wt% NaCl equivalent. These quartz-calcite veinlets cut mainly the early garnet cores, rich...grew in open spaces together with coarse-grained calcite and quartz. Tungsten mineralization is hosted in...are usually filled with coarse-grained euhedral calcite, lesser euhedral apatite, amphibole and minor chlorite...microcracks are filled mainly with calcite and less commonly with calcite-quartz. The microcracks invariably |  | | Journal (article/letter/editorial) | | University,Montreal, Quebec,CanadaH3A 2A7 IAIN M. SAMSON, Departmentof Geology,Universityof Windsor,Windsor...hornfels. Thin calc-silicate 1516 WILLIAMS-JONES, SAMSON, AND LINNEN 1 cm thick; Fig. 2), and lesscommonly...(actinolite-epidote_ diopside___ calcite); chloritemuscovite(_ calcite);andcarbonate(ankerite-calcite _ galena_ sphalerite)...Sixsolidphasescanbe distinguished on 1518 WILLIAMS-JONES, SAMSON,AND LINNEN a • FIG. 3. Photomicrographs showing(a)...for type 9, inclusions. 1520 WILLIAMS-JONES, SAMSON, ANDLINNEN 40 TYPE3 10 L BIOTITE 10 ] CHLOR |
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