 | | Report (issue) | | 31 49.83 16.86 Total 100.00 100.00 (1) Thorez mine, Poland; corresponds to [(H3 O)0.88 Na0.07 K0.05...Melanterite, goethite. Distribution: Material confirmed by modern techniques from: in Poland, at the Staszic...Staszic mine, Holy Cross Mountain, near Kielce, and at Rudawka, Rymanowska, Carpathian Mountains; in the...the Thorez mine, Walbrzych, Lower Silesia. From Jáchymov (Joachimsthal), Czech Republic. At the Kamariza...Kamariza mine, Laurium, Greece. Found north of Ballybunion, Co. Kerry, Ireland. In the Malka mine, southeast |  | Dekoninck, Augustin, Monié, Patrick, Blockmans, Sabine, Hatert, Frédéric, Rochez, Gaëtan, Yans, Johan (2019) Genesis and 40Ar/39Ar dating of K-Mn oxides from the Stavelot Massif (Ardenne, Belgium): Insights into Oligocene to Pliocene weathering periods in Western Europe. Ore Geology Reviews, 115. 103191 doi:10.1016/j.oregeorev.2019.103191 | Journal (article/letter/editorial) | | pyrolusite), clays (mainly kaolinite) and Fe oxides (goethite). In this paper, we investigate the weathering...the Mn levels close to the roll front within the lower saprolite and the fissured horizon, respectivelly...Romanèche mine Romanèche mine Romanèche mine Romanèche mine Transinnes quarry Fernie mine and Buderus...Buderus quarry Fernie mine and Buderus quarry Schrotloch dump (Hornisgrinde) Massif Central Massif Central...cryptomelane Öhrenstock area (Ilmenau South) Leonie mine (Auerbach) 14.73 0.3 Hautmann and Lippolt (2000) |  | | Book | | cover photo: Agate, polished. Nowy Kościół, Lower Silesia, Poland. Sample 260x260xl30 mm. Photo R. Molenda...320x260xl IO mm. Agate, polished. ~owy Kościół, Lower Silesia, Poland. Photo 30x60 mm, sample 320x260xl IO mm...160xl50x30 mm. Sphalerite, polished. QIJ...7.1sz, Poland. Photo 30x70 mm, sample 160xl50x30 mm. , Sfale111...okaz 230xl50xl5 mm. Sphaleńte, polished. Olkusz, Poland. Photo 50xl40 mm, sample 230xl50xl5 mm. Fot. 6...the oldest and the best technical academies in Poland will celebrate its 90th jubilee in 2009. Mining |  | | Journal (article/letter/editorial) | | in the Chalk near South Minims, Hertfordshire J. THOREZ, P. BULLOCK, J. A. CATT & A. H. WEIR Summary. Pipes... 413-423. Printed in Great Britain. 414 j . THOREZ et al. variety of deposits than most of the smaller...with clay partings. : 9 a" a 6 416 j . THOREZ et al. 3. Analytical methods Thin sections of...contains 32% apatite and 15% iron oxides (mainly goethite), but the layer silicate minerals are exactly...kaolinite, and small amounts of apatite, quartz, goethite and lepidocrocite. Only a small part of this clay |  | Dill, H. G., Bosse, H.-R., Henning, K.-H., Fricke, A., Ahrendt, H. (1997) Mineralogical and chemical variations in hypogene and supergene kaolin deposits in a mobile fold belt the Central Andes of northwestern Peru. Mineralium Deposita, 32 (2) 149-163 doi:10.1007/s001260050081 | Journal (article/letter/editorial) | | In western Peru kaolin-alunite deposits occur in Lower Cretaceous and Tertiary clastic, volcaniclastic...of the Central Andes as follows: (1) during the Lower Cretaceous kaolinization characterizes phases of...identification of phyllosilicates are given by Thorez (1976) and Weaver (1989). The determination of...2). The stope walls in the Chorobal mine are stained with goethite, malachite and gypsum. Chorobal displays...Volcanico San Pablo El Sol 3/Encajon Middle to Lower Tertiary Socosmayo La Providencia Alunite, tridymite |  | Hatert, Frédéric, Lefèvre, Pierre, Pasero, Marco, Fransolet, André -Mathieu (2003) Graulichite-(Ce), a new arsenate mineral from the Stavelot Massif, Belgium. European Journal of Mineralogy, 15 (4) 733-739 doi:10.1127/0935-1221/2003/0015-0733 | Journal (article/letter/editorial) | | the most altered parts of a Devillian quartzite (Lower to Middle Cambrian), in close association with arsenopyrite...arsenopyrite, scorodite, mimetite, pharmacosiderite, and goethite. Graulichite-(Ce) forms 80 to 150 µm spherical...aggregates or – isolated {1012} rhombohedra, lying on a goethite coating. Belgium (no. 20325) and in the collection...pharmacosiderite, barium-pharmacosiderite and goethite (Lefèvre, 2001; Lefèvre & Hatert, in press). The...tropical climate of the Tertiary period (Alexandre & Thorez, 1995). As the minerals of the crandallite group |  | Coppola, Vito, Boni, Maria, Gilg, H. Albert, Balassone, Giuseppina, Dejonghe, Léon (2008) The “calamine” nonsulfide Zn–Pb deposits of Belgium: Petrographical, mineralogical and geochemical characterization. Ore Geology Reviews, 33 (2) 187-210 doi:10.1016/j.oregeorev.2006.03.005 | Journal (article/letter/editorial) | | crystallization. Carbon isotope values, even from the same mine, show a considerable range from −11.6 to −1.6‰.... Zn sulfide ores were preferred, despite their lower grades. Over 1.5 Mt of zinc metal have been produced...centuries. Eastern Belgium, together with Lower Silesia in Poland and the Iglesias area in SW Sardinia, were...lack of production statistics before 1825. When the mine was still in operation, the concentrates were essentially...concentrated in the NE of the country. At Fossey, a mine which was active until 1918, the total production |  | | Journal (article/letter/editorial) | | localalterationpatterns. Miocenebasiclavasof the Lower Coyolunit which hosts the auriferousquartzveins(Fig...higher grade and basaltic andesitesdominatingthe Lower Coyol of the samefaciestoward the mining districts... ,.' / // ++l•-•--• Subvolcanic intrusions Lower Coyol unit (basic lavas) and Intermediate ElCorcocot...terstratified chlorite-smectite (cf. Thorez, 1976; methods(Thorez,1976), i.e., by the positionof basal...Qfz, SwC{Smf),Col, Lmf the volcanicrocksof the Lower Coyol unit outcrop- • Chl, Qfz, Cob Lmf + Ep, |  | Venturelli, Giampiero, Contini, Simona, Bonazzi, Achille, Mangia, Alessandro (1997) Weathering of ultramafic rocks and element mobility at Mt. Prinzera, Northern Apennines, Italy. Mineralogical Magazine, 61 (409) 765-778 doi:10.1180/minmag.1997.061.409.02 | Journal (article/letter/editorial) | | is usually in the range 4.2-7.0 (average 5.1): lower values have been occasionally recorded in the town...rocks, which in places exhibit foliation, rest on Lower Cretaceous dark shales and limestones, Palaeocene...and minor chlorite, magnetite and sulphide. Most goethite and Mn-rich oxide, calcite and in part smectite...represent products of hydrothermal activity at lower temperature. Lizardite, which has been identified...serpentinite (width of view ~ 500 pm). (B) Aggregates of goethite located along fractures in strongly oxidized serpentinite |  | | Report (chapter) | | is a major decline in ammonoids well before the Lower Annulata Event, which suggests an episode of extreme...Protactoclymenia–Stenoclymenia –Guerichia biofacies’ of the Lower Annulata Shale. The upper part of the annulata Zone...al. 2014: Beds N1c and N1f2), hypoxic to anoxic Lower and Upper Annulata Shales can be distinguished....proposed using the base of the annulata Zone or Lower Annulata Shale for the definition of a formal upper...subdivisions are recognized (Fig. 1). The Lower Annulata Shale and a Lower Annulata Intralimestone belong to |  | | Report (chapter) | | easy to perform. Earth buildings usually have a lower embodied energy and carbon footprint than the other...followed the criteria recommended by Schultz (1964), Thorez (1976) and Mellinger (1979). For the semi-quantification...minerals like iron oxides and hydroxides (hematite, goethite). The samples of group 2 are characterized by...phyllosilicate content (in particular kaolinite) and the lower carbonate content in group 1. This may be Fig....are shown in Table 3. The water penetration is lower for the adobes from group 2. The higher water penetration |  | Tauler, Esperança, Xu, Jingyao, Campeny, Marc, Amores, Sandra, Melgarejo, Joan Carles, Martinez, Salvador, Gonçalves, Antonio O. (2019) A New Kaolin Deposit in Western Africa: Mineralogical and Compositional Features of Kaolinite from Caluquembe (Angola) Clays and Clay Minerals, 67 (3) 228-243 doi:10.1007/s42860-019-00021-4 | Journal (article/letter/editorial) | | Illite-bearing samples KK13 and KK11A also contain goethite: 12.9 wt.% and 22.9 wt.%, respectively. The XRPD...indicating a small proportion of expanded clay (Thorez 1975; Moore & Reynolds 1997). The physical properties... in sample KU6B (upper level) and sample KU6D (lower level), the CIA parameter is 87 and 82, respectively...6). In addition, the kaolinite grade is slightly lower or similar to those found in Koutaba and Mayouom...1.4 n.d. Pyrophilite n.d. Anatase Hematite/goethite 0 to 1.6 n.d. 2 to 21 Feldspars 3.7 to 4 n |  | | Journal (article/letter/editorial) | | alunogen, APS minerals Rare Aluminite, quartz, goethite, smectite Alunite, APS minerals, feldspar, quartz...identification of phyllosilicates are given by Thorez (1976) and Weaver (1989). The analytical results...fluctuates. In Agua Shuca, only trace amounts of goethite (α FeOOH) have been discovered. Contrary to this...and allows for a subdivision of the kaolin into a lower, reducing and a upper, oxidizing facies (Table 3)...two interlayers of diatomaceous earth, with the lower horizon attaining more than 3.5 m and the upper |  | | Journal (article/letter/editorial) | | knowingthat they may have liminarystudyhasidentified goethite, natrojarosite, formedin unconnected subbasins...thoughsomeof chert, clay, poorlycrystallinemica, goethite,and it can be identifiedas a dustingof goethit...laminae of detrital quartz and toonestmineralis goethite. Other mineralsrecognized in surfaceexposureare...mudstonephosphorirebed. They have sharply defined lower boundariesbut commonly have transitional tops, ...northern end of the D Tree deposit (20decreaseto a lower order of significance (Table 3). 26), samplesin |  | | Journal (article/letter/editorial) | | h were also prepared using well known methods (Thorez, 1976; Brindley and Brown, 1980; Vol. 59, No...samples are the only ones in the present study where goethite and hematite occur in both the whole-rock samples...MSc thesis, 327 University of Aveiro, Portugal. Thorez, J. (1976) Practical Identification of Clay Minerals |  | Gaudin, Anne, Ansan, Véronique, Lorand, Jean-Pierre, Pont, Sylvain (2020) Genesis of a florencite-bearing kaolin deposit on ordovician schists at Saint-Aubin-des-Châteaux, Armorican Massif, France. Ore Geology Reviews, 120. 103445 doi:10.1016/j.oregeorev.2020.103445 | Journal (article/letter/editorial) | | 2016, 2017, 2018), and as ore deposits within the Lower Ordovician named the “Grès armoricain” Formation...phosphates including Scand/or Sr-bearing species in the Lower Ordovician sandstones underlying the Tertre Rouge... Paleozoic sedimentary deposition was begun by the Lower Ordovician sandstones, called the “Grès armoricain”...pattern interpretation of the pattern for °2Ө values lower than 4°. The XRD patterns were obtained on bulk...more irregular and diffuse shapes, suggesting a lower crystallinity compared to “dickite/nacrite”. These |  | | Journal (article/letter/editorial) | | peaks are masked by pyroxene and plagioclase. Goethite and smectite were sometimes detected in the fine...structure when replacing larger crystals (Fig. 6). Goethite is the dominant phase shown by xcay camera patterns...altered to an oriented boxwork of orange platy goethite. SEM. Sample 16-4-11 either grit, deuteric or...vertically oriented cracks are filled in their lower parts by " m i x e d " assemblages and above by...geopetal surface at the time of deposition of the lower detrital fill. One such surface is inclined at least |  | | Journal (article/letter/editorial) | | metamorphic rocks are overlain by Paleocene to lower Eocene sedimentary rocks. These are unconformably...(1980); Jackson (1979); Moore and Reynolds (1997); Thorez (1976) and Tucker (1988) were employed. Oxygen...hematite, jarosite and goethite, and occurs as rusty quartz-hematite or quartz-goethite veins exposed near...of chalcocite, covellite, jarosite, limonite, goethite, hematite, malachite and azurite (Figs. 7A to...higher δ18O and lower δD values; and the second close to the meteoric water line with lower δ18O and higher |  | Lisboa, J.V., de Oliveira, D.P.S., Rocha, F., Oliveira, A., Carvalho, J. (2015) Patterns of rare earth and other trace elements in Paleogene and Miocene clayey sediments from the Mondego platform (Central Portugal) Geochemistry, 75 (3) 389-401 doi:10.1016/j.chemer.2015.07.002 | Journal (article/letter/editorial) | | basement. The Coja Formation (Middle Eocene to Lower Chattian?) comprises two members separated by a...the intensity factors reported by Schultz (1964), Thorez (1976) and Brown and Brindley (1980) with slight...Monteira Member identified in all samples, but in much lower quantities than Kfeldspar in the same set of samples...indicative of iron-depleted chlorite varieties (Thorez, 1976; Brindley and Brown, 1980). XRD pattern do...postArchean Australian shale (PAAS) or slightly lower. The Al2 O3 content ranges from 12.8 to 23.4 wt |  | | Journal (article/letter/editorial) | | 90 ×1.53 Analcime 1.79 ×5.6 Siderite 2.8 ×1.15 Goethite 2.43–2.46 ×7 Reference Cook et al. (1975) Cook...empirical experiments at University of Liege (J. Thorez, personal communication). No correction was applied...Cretaceous’, ‘Permo-Triassic and Jurrassic’ and ‘Lower Paleozoic’. Mafic, ultramafic and alkaline rocks...sediment assemblage, including e.g. higher illite, lower chlorite and smectites. Most of the clay variation...54°N-Zaravotnyi transect (Muller et al., 2001), but a lower contribution of illite counterbalanced by higher |  | | Journal (article/letter/editorial) | | Formation that are separated by an unconformity: the lower member consists of massive arkoses, and the upper...Buçaqueiro Coja Fm. Coja Fm. Campelo Fm. Group Fm. (lower member) (upper member) Tábua Coja Sanguinheda...followed the criteria recommended by Schultz (1964), Thorez (1976), and Brindley and Brown (1980). The relative...observations is in the same range as the present study or lower. To better understand the analytical data structure...heating indicates low-iron chlorite varieties (Thorez, 1976; Brindley and Brown, 1980), but the diffractograms |  | | Report (volume) | | field guide 213 MYERS, K. J. T he o ri gin of the Lower Jurassi c Cleveland Ironstone Forn1ation of Northeast...fractured by desiccation. The pisoids are typically of goethite wilh a high proportion of alumina. The nature...(Curtis 1985; liji n1a & i\ l arsun1oco l 982). Goethite i a con1rnon n1ineral in n1any ironsrones . so...ooids in marine ironstones: the high-sphericity goethite ooids, and the tow'>phericity berthierine-dominated...have almost always been goethite ones: it is often uncertai n whether the goethite in these ooids is primary |  | | Report (chapter) | | petrography and diagenesis of calcite cements in the Lower Jurassic, Bridport Sands (southern England) and...Bridport Sands, onshore Dorset, UK The Upper Liassic (Lower Jurassic) Bridport Sands outcrop in Dorset as spectacular...heavily bored bioclast B has been dissolved leaving goethite lined borings within the mouldic porosity. MWD-1...dissolution of the bored bioclast B. Only the goethite filled borings and micritized envelope remain...Professor W. G. Mook (Groningen), and Professor J. Thorez (Liege) for providing some of the data discussed |  | | Journal (article/letter/editorial) | | another diamond mine in the same region [51]. Cellulose δ 13 18 2 from another diamond mine in the same region...showing tyloses (arrow), Panda Pipe Ekati Diamond Mine. Specimen (A,B) Metasequoia showing tyloses (arrow)...(arrow), PandaMine. PipePhoto EkatibyDiamond Mine.[52]. Specimen provided byheartwood Alex Wolfe. (C) Piceaoxylon...Alex Wolfe. (C) Piceaoxylon from Diavik Diamond Mine. Photo by Benjamin Hook [52]. Figure 6. Paleocene/Eocene...Diamond Mine. Specimen Metasequoia provided by Alex Wolfe. (C) Piceaoxylon from Diavik Diamond Mine. Photo |  | | Report (issue) | | Geology and Tectonic History of the Lower Cape Fear River Valley, Southeastern North Carolina U.S. GEOLOGICAL...1466 - A Geology and Tectonic History of the Lower Cape Fear River Valley, Southeastern North Carolina...(David R.) Geology and tectonic history of the lower Cape Fear River valley, southeastern North Carolina.................... ..3 Aerial photograph of the lower Cape Fear River valley showing Carolina bays and..................... 16 Aerial photograph of the lower reaches of the Cape Fear River valley showing the |
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