 | Bigham, J.M., Schwertmann, U., Traina, S.J., Winland, R.L., Wolf, M. (1996) Schwertmannite and the chemical modeling of iron in acid sulfate waters. Geochimica et Cosmochimica Acta, 60 (12) 2111-2121 doi:10.1016/0016-7037(96)00091-9 | Journal (article/letter/editorial) | | Copyright 0 1996 Elsevier Science Ltd Printed in the USA. All rights reserved 0016.7037/96 $15.00 + .OO Pergamon... The Ohio State University, Columbus, OH 43210, USA *Lehrstuhl fiir Bodenkunde, Technische Universitlt...sediments and associated solutions from twenty-eight mine drainage sites showed that precipitates formed at...FesHOs *4H20) or a mixture of ferrihydrite and goethite ((Y-FeOOH), whereas those precipitated from waters...FesO,( OH),S04) with trace to minor amounts of goethite. Solutions of intermediate pH values produced |  | | Journal (article/letter/editorial) | | of Western Grove,in the N.E. section of Newton County. All these are in N . W . Arkansas. "It happened...and interesting one from Lawrence County, Arkansas." CALIFORNIA—Emmett Klopfenstein, Box 162, Greenville...pinkish rhodonite have been found in the Sunnyside mine at Silverton (San Juan Co.), Colo. CONNECTICUT—Richard..., sent us two items (one on the old lead-silver mine at Canton (Hartford Co.), Conn, and the other on...Reid, collected at the old Canton silver and lead mine. I recently visited the locality, for the first |  | | Journal (article/letter/editorial) | | FRESHWATER FERROMANGANESE NODULES FROM GREEN BAY, LAKE MICHIGAN S E UN G Y EO L L E E AN D H U IF A NG X U *...ferromanganese nodules (FFN) from Green Bay, Lake Michigan have been investigated by X-ray powder diffraction...iron-bearing phases are feroxyhyte, goethite, 2-line ferrihydrite, and proto-goethite (intermediate phase between...between feroxyhyte and goethite). The XRD patterns from nodule cross sections suggest the transformation of...hematite micro-crystals. Other cores consist of goethite, cristobalite, tridymite, hercynite, hematite-bearing |  | | Journal (article/letter/editorial) | | and understanding of the iron oxide substrate (goethite, hematite and magnetite) mineralogy and the fate...were predominantly hematite, magnetite and goethite with goethite containing significant amounts of quartz...Arsenic (V) adsorption capacity of 37.3 mg/g by goethite (Faria et al., 2014), 46.06 mg/g by magnetite...three different types of iron oxide minerals (goethite, hematite and magnetite) were 43 GMJ Vol. 20...for the investigations. The iron oxide minerals: goethite, hematite and magnetite were obtained from Wards |  | | Journal (article/letter/editorial) | | Institute of Technology, Pasadena, CA 91125-2500 USA Abstract: Hydroxide bands arising from intrinsic...This treatment is commonly applied to sapphires (Emmett et al., 2003). Such concerns are justified in view...from basaltic sources in southern Vietnam, and Emmett et al. (2003) who reported OH bands at 3367, 3310...Yogo Gulch, Judith Basin Co., Montana Yogo Sapphire Mine, Judith Basin Co., Montana Dry Cottonwood Gulch...1970’s (Emmett & Douthit, 1993) with the consequent introduction of OH in the process (Emmett et al., |  | | Journal (article/letter/editorial) | | 53, No. 2, 113±122, 2005. SURFACE ENTHALPY OF GOETHITE L E N A M A Z EI N A AND A LE X A ND R A N A...University of California at Davis, Davis, CA 95616, USA AbstractÐHigh-temperature oxide-melt solution calorimetry...determine the heat of dissolution of synthetic goethite with particle sizes in the range 2 ÿ75 nm and...transform infrared spectroscopy, the Brunauer, Emmett and Teller method and thermogravimetric analysis...acidsolution calorimetry. The enthalpy of formation of goethite can vary by 15 ÿ20 kJ/mol as a function of surface |  | Perera-Solis, Diego D., Pimlott, Matilda, Fidment, Ella, Whiting, Andrew, Greenwell, Hugh Christopher (2019) Adding Value to Waste Minerals in a Circular Economy Framework: Ochre-Derived Layered Double Hydroxide Catalysts in Fatty Acid Ketonisation. Minerals, 9 (11) 681 doi:10.3390/min9110681 | Journal (article/letter/editorial) | | the co-precipitation method from a dissolved acid mine drainage precipitate waste “ochre”, which is normally...acid-soluble waste product sludge precipitated from acid mine drainage (AMD) treatment named ochre, which would...synthesize Mg/Fe LDHs. In this paper, the use of the acid mine drainage precipitate ochre is investigated as a...Cleveland, UK; a treatment system for an ironstone mine. Previous work has shown that the Saltburn ochre...ochre was mostly amorphous, with traces of goethite and 2-line ferrihydrite by XRD. Transmission electron |  | Gagliano, W.B, Brill, M.R, Bigham, J.M, Jones, F.S, Traina, S.J (2004) Chemistry and mineralogy of ochreous sediments in a constructed mine drainage wetland. Geochimica et Cosmochimica Acta, 68 (9) 2119-2128 doi:10.1016/j.gca.2003.10.038 | Journal (article/letter/editorial) | | 2004 Copyright © 2004 Elsevier Ltd Printed in the USA. All rights reserved 0016-7037/04 $30.00 ⫹ .00 Pergamon...mineralogy of ochreous sediments in a constructed mine drainage wetland W. B. GAGLIANO,1,* M. R. BRILL...University, 2021 Coffey Road, Columbus, OH 43210, USA Sierra Nevada Research Institute, University of California...California, Merced, P.O. Box 2039, Merced, CA 95344, USA (Received October 16, 2002; accepted in revised form...in a compost wetland constructed in 1990 for acid mine drainage treatment. Intact sediment cores were collected |  | | Journal (article/letter/editorial) | | POLYMERIZATION ON THE OXALATE-PROMOTED DISSOLUTION OF GOETHITE M A T T HE W J . E IC K 1 , *, T OD D P . L UX...Environmental Sciences, Virginia Tech, Blacksburg, VA 24061, USA U.S. Environmental Protection Agency, National Risk...Division, 5995 Center Hill Ave, Cincinnati, OH 45224, USA Abstract—Numerous studies have investigated the...(oxyhydr)oxide goethite. Sorbed silica reduced the oxalate-promoted dissolution rate of goethite at all surface...increased, the silica underwent polymerization on the goethite surface. Initially, silicate was associated with |  | | Journal (article/letter/editorial) | | (1996) © Meteoritical Society, J996. Printed in USA. The study of weathering products of meteorites...weathering of ordinary chondrites from Roosevelt County (western United States) and from the Sahara (Daraj...by evolved gas analysis recovered from Roosevelt County and Daraj for which terrestrial ages have been...and hydrolysis. For example, the formation of goethite from olivine Eq. (I) or from troilite Eq. (2)...activity, and anions present. Mineral Formula Goethite Lepidocrocite Ferrihydrite Akaganeite Hematite |  | | Journal (article/letter/editorial) | | Photographs January/February: Chalcopyrite on quartz, La Mine de Giraud, La Gardette, Bourg d’Oisan, Isère, France...Herkimer Diamond Mines, Inc., New port, Herkimer County, New York. Jeffrey B. Fast specimen and photo....cleavelandite, 49er Pocket, Oceanview mine, Pala district, San Diego County, California. Bill Larson specimen...photo. September/October: Gold, Mockingbird mine, Mariposa County, California. Collector’s Edge Minerals,...Treasure Chest Pocket, Jacksons Crossroads, Wilkes County, Georgia. Lisa Bennett specimen, Jeff Scovil photo |  | | Journal (issue) | | KRISTALLE Est.1971 Laguna Beach, California, USA • Tel: +1 949 494 5155 • Email: info@kristalle.com...the Dragon Gold Specimen, Colorado Quartz mine, Mariposa County, California........................463 by...cjstefanoxls@gmail.com Hauerite from the Destricella mine Circulation Manager & Staff Photographer Christi...Dragon”), 22.9 cm, from the Colorado Quartz mine, Mariposa County, California. Collector’s Edge specimen (now...only): $139/one year (Canada) $231/one year, (outside USA other than Canada) $325 for one year Subscription |  | | Book (volume) | | Dahlonega Co. and Rabum Co., and the McDuffie County Belt extending through portions of McDuffie, Warren...Sphalerite. BALDWIN COUNTY MILLEDGEVILLE, at state farmjasper. BANKS COUNTY COMMERCE, along Hwy. 59...along adjoining Co. linerock crystal. BARROW COUNTY WINDER, along rd. to Jefferson and 1½ mi. inside...Guide for Rock Hounds in the United States BARTOW COUNTY AREA, Saltpeter Cave, as floatjasper. CARTERSVILLE:...CARTERSVILLE: area barite pitsBarite, Geodes, Goethite, Hematite, Limonite, Iron minerals; area mines, |  | Cuevas, Jaime, Dirocie, Nisael, Yunta, Felipe, García Delgado, Carlos, González Santamaría, Daniel E., Ruiz, Ana Isabel, Férnández, Raul, Eymar, Enrique (2019) Evaluation of the Sorption Potential of Mineral Materials Using Tetracycline as a Model Pollutant. Minerals, 9 (7) 453 doi:10.3390/min9070453 | Journal (article/letter/editorial) | | mineralogy, cation exchange capacity (CEC), Brunauer, Emmett and Teller specific surface area (BET-SSA) and...AmColl (American Colloid Company, Hoffman Estate, IL, USA) (95% smectite, 5% quartz and feldspars) contains...reflections. sepiolite, Sme: smectite, ® illite; Gth: Goethite; qtz: quartz, sheet sil: sheet silicates; Dol:...Materials: Sepiolite: Pansil Ilt: illite; Gth: Goethite; qtz: quartz, sheet sil: sheet silicates; Dol:...montmorillonite low Fe content; Goet: Synthetic Goethite; Fh: Synthetic Ferrihydite; High-charge montmorillonite |  | | Journal (article/letter/editorial) | | obtained from carbon dioxide sorption at 196 K on goethite, hematite and gibbsite than from nitrogen, argon...divided and porous materials is that of Brunauer, Emmett and Teller (1938), the BET method. A number of...vapor adsorption methods were first developed, Emmett and Brunauer (1937) advocated the use of nitrogen...cellulose bags against distilled water for 28 days. Goethite was prepared by dissolving 400 g ferric nitrate...volumetric equipment based on that described by Emmett and Brunauer (1934) and including many of the refinements |  | | Journal (article/letter/editorial) | | temperature(25øC, 50øC),andredox state(air,Fe+2-goethite). Underoxidizedconditions at 25øCand1MC1,theorderofdecreasing...However,in 1M C1at 25øCwith Eh bufferedby Fe+2-goethite, the orderof decreasing adsorptionis Pb-Zn-Co-Ni-Cu(-Ag...(U.S.A.),the Zambiancopper Fe oxides(hematite, goethite) are present in red belt, andRedstone(Canada)...species; normal lettersindicatesolidphases, •e+•-goethite boundary •t a•+• = • • •0 -• (•0 •/•). For present...Propertiesof GoethiteandHematite Property Value Goethite pH of slurry Surfacearea(BET) Particlediameter(Coulter |  | | Journal (article/letter/editorial) | | University of California, Berkeley, CA 94720-3114, USA Received 6 February 2007; received in revised form...Carolina State University, Raleigh, NC 27695-7619, USA. Tel.: +1 510 643 9951; fax: +1 510 643 2940. E-mail...culture grown in half-strength Luria Broth (Becton, Dickinson). The flasks were incubated at 30 °C in an orbital...prepare the biogenic oxide samples for Brunauer– Emmett–Teller surface area analysis (Brunauer et al.,...respectively, as determined by a 9-point Brunauer–Emmett–Teller (BET) N2 adsorption isotherm (Micrometrics |  | | Journal (article/letter/editorial) | | University of California at Davis, Davis, CA 95616, USA Received 29 June 2006; accepted in revised form 16...be thermodynamically metastable with respect to goethite (a-FeOOH) and yet the former phase forms and persists...that this phase is metastable with respect to goethite (a-FeOOH) (Majzlan et al., 2003), it can be prepared...the system FeOOH shows extensive polymorphism (goethite, lepidocrocite, akaganeite, feroxyhyte), and all...Surface area was measured by the BET (Brunauer–Emmett–Teller) (Brunauer et al., 1938) method with a Micromeritics |  | Miyata, Naoyuki, Takahashi, Ayato, Fujii, Tatsuo, Hashimoto, Hideki, Takada, Jun (2018) Biosynthesis of Schwertmannite and Goethite in a Bioreactor with Acidophilic Fe(II)-Oxidizing Betaproteobacterium Strain GJ-E10. Minerals, 8 (3) 98 doi:10.3390/min8030098 | Journal (article/letter/editorial) | | minerals Article Biosynthesis of Schwertmannite and Goethite in a Bioreactor with Acidophilic Fe(II)-Oxidizing...Abstract: Iron oxide minerals, schwertmannite and goethite, which are naturally occurring in acidic environments...microorganisms has been investigated, little is known about goethite biosynthesis under acidic conditions. To examine...production of goethite, and 90% pure goethite was obtained at 37 ◦ C and pH 3.5. The goethite phase was nano-sized...nanostructured goethite as well as schwertmannite. Keywords: acidophilic iron-oxidizing bacterium; goethite; metal |  | Mikutta, Robert, Mikutta, Christian, Kalbitz, Karsten, Scheel, Thorsten, Kaiser, Klaus, Jahn, Reinhold (2007) Biodegradation of forest floor organic matter bound to minerals via different binding mechanisms. Geochimica et Cosmochimica Acta, 71 (10) 2569-2590 doi:10.1016/j.gca.2007.03.002 | Journal (article/letter/editorial) | | we studied the biodegradation of OM bound to goethite (a-FeOOH), pyrophyllite, and vermiculite via specific...dissolved OC concentrations of 5–130 mg/L at pH 4. Goethite retained up to 30.1 mg OC/g predominantly by ‘ligand...components were selectively sorbed by all minerals (goethite phyllosilicates). The sorption of OM was strongly...sorption–desorption and biodegradation patterns of OM using goethite, pyrophyllite, and vermiculite as model sorbents...surface types: hydroxylated, amphoteric surfaces (goethite), neutral siloxane surfaces (pyrophyllite), and |  | | Journal (article/letter/editorial) | | Carolina State University, Raleigh, NC 27695-7619, USA Received 8 September 2009; accepted in revised form...substitution in Co-substituted goethite, possibly caused by distortion of goethite structure and increased lattice...Environmental Engineering, University of Michigan, Ann Arbor, MI 48109, USA. 0016-7037/$ - see front matter Ó...Co has been shown to be incorporated into the goethite (a-FeOOH) structure as low-spin Co3+ (Gasser et...was 59.8 ± 0.9 m2 g1 as determined by Brunauer–Emmett– Teller (BET) nitrogen adsorption isotherm (Autosorb-1MP |  | | Journal (article/letter/editorial) | | several nations (e.g., Australia, South Africa, USA, China, Canada, and Ghana), owing to its coveted...dawn of civilization [1–6]. In a recent global gold mine reserve estimation [7], Australia hosts 16% of the...of of 14 13 Figure 1. Global gold mine reserves in 2015. Total mine gold reserve was 56,700 metric tons...monetary estimate Figure 1. Global gold mine reserves Total mine gold reserve rate, passivation/encapsulation...the more easy-to-treat ores got depleted. For some mine operations, high grade leach tailings, due to gold |  | | Journal (article/letter/editorial) | | energy-dispersive X-ray spectroscopy, Brunauer–Emmett–Teller surface-area measurements, thermogravimetry–differential...characteristics of high-iron hydrargillite. Gibbsite, goethite, and hematite were found to be the main mineral...mineral components of hydrargillite, whereas the goethite and hematite were closely clad to the surface of...isomorphous substitution of Al and Fe was observed in goethite. The dissolution-controlling step of hydrargillite...hydrargillite was the ionic diffusion speed because of the goethite and hematite that closely covered and encapsulated |  | | Journal (article/letter/editorial) | | such as the 1980 eruption of Mt. St. Helens, in the USA and the 1991 Mt. Pinatubo eruption in the Philippines...(China), and commercially available Arizona Test Dust (USA). M’Bour natural mineral dust was collected close... (ATD, Powder Technology Inc., Arden Hills, MN, USA) collected on October 17, 2014, was used for the...obtained from Clay Mineral Society, Aurora, CO, USA and contains 10–15% of quartz. All three minerals...(Sigma-Aldrich, St. Louis, MO, USA, CAS 1317-61-9, Lot# MKBC3159V), goethite (FeOOH, 30–63% Fe) (Sigma-Aldrich |  | | Journal (article/letter/editorial) | | effectively distinguish the relative contents of goethite and hematite in the Beihong agate, and the position...Beihong agate; colour; spectral characteristic; goethite; hematite 1. Introduction Citation: Zhou, Y.;...hydroxides. The yellow colour of agate is related to goethite and or ferrihydrite [4–6], while the red colour...together with goethite [7,8]. Goethite and hematite have different colours, yellow for goethite and red for...under certain temperature and pressure conditions, goethite can be converted to hematite [9]. Variations in |
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