 | | Journal (article/letter/editorial) |
| STAVELOT MASSIF, BELGIUM FRÉDÉRIC HATERT§ Laboratoire de Minéralogie, Université de Liège, Bâtiment B18...B18, B–4000 Liège, Belgium ABSTRACT Bornite, chalcopyrite, idaite, covellite, yarrowite, spionkopite, anilite...veins from the Vielsalm area, Stavelot Massif, Belgium. The identification of these copper sulfides is...transformation sequences, Vielsalm, Stavelot Massif, Belgium. SOMMAIRE L’observation des sections polies, réalisées...along the southern border of the Stavelot Massif, Belgium, in quartz veins cross-cutting chloritoid-bearing |
 | | Journal (article/letter/editorial) |
| rather good agreementwith known features of the hematite-ilmenite phasediagram. This model assumedbinary...tricritical pointsr which are predicted to occur in the hematite-ilmenitesystem: (1) {Xr,Q}-chem, which occursas...consequence of the anisotropic solution properties of hematite-ilmenitesolutions; and (2) {Xr,T.}-mag, which...Hovis, 1979).Thus, the resultspresented below for hematite-ilmenitehave implicationsfor many other important...phasesbecome cal ordering and immiscibility in the hematite-ilmentite identical(cf.Scott. 1982or Knobler and |
 | | Journal (article/letter/editorial) |
| these results may be fortuitous. Introduction Hematite (c~ F%O3) , ilmenite (FeTiO3) and hematiteilmenite...histories of rocks. Therefore, determination of the hematite-ilmenite phase diagram is a very desirable goal...diagram for the hematite-ilmenite system, based on the single-prism approximation (SPA; Burton and Kikuchi...between hematite and ilmenite appears to be complete; however, the crystal structures of hematite and ilmenite...ilmenite are different (Fig. 1); hematite, hematite-rich solutions, and Ti20 3 crystallize in the corundum |
 | | Journal (article/letter/editorial) |
| MASSIF, BELGIUM J. LAMENS Katholieke Universiteit Leuven, Instituut ooor Aardwetenschappen, (Belgium) Redingenstraat...(Tremadocian, Lower Ordovician) of the Stavelot Massif, Belgium. Sediment. Geol., 44: 121-142. The Lower Salmian...Ordovician) in the Caledonian Stavelot Massif (Belgium) consists of a sedimentary rock sequence which...one of the five C a l e d o n i a n massifs in Belgium (Fig. 1); it is c o m p o s e d of Devillian, R..... ks Fig. 1. Caledonian Massifs exposed in Belgium. mainly composed of black shales. The overlying |
 | | Journal (article/letter/editorial) |
| 90265, USA Abstract. The single prism approximation SPA of the cluster variation method has been used to... transition in hematite. This calculation yields insight into the accuracy of the SPA and other approximate...superior treatment of configurational entropy in the SPA. Qualitative to semiquantitative agreement is obtained...calculate some of the thermomagnetic quantities for hematite, e F % O 3. Because the necessary energy parameters...good result• We refer to this by the abbreviation SPA for single prism approximation• Samuelsen and Shirane |
 | | Journal (article/letter/editorial) |
| to martite and microplaty hematite. The genesis of these highgrade hematite ores remains controversial...quartz and converted clinochlore and muscovite to hematite and kaolinite, respectively. Late in the paragenetic...BIF was converted to highly porous high-grade hematite ore by the dissolution of Si, a process not requiring...at Mt. Whaleback, (2) oxidation of magnetite to hematite can occur independently of silica removal or replacement...Many of these orebodies consist of martite (a hematite pseudomorph of magnetite) and goethite and most |
 | | Journal (issue) |
| AFRICA ...................................... 328 SPA, BELGUIM ·······································...we donate a few fine specimens to the people in Belgium who have lost so tragically their national collection...crystals of pyrite, ciarcasite, tourmaline and hematite. One other article like the flower pot was obtai...completely studded with superb crystals of pyrite, hematite, calcite and quartz. The cement that held them...for the shipment of the gifts from America to Belgium. . ., . 1 Three kinds of specimens are needed: |
 | | Journal (article/letter/editorial) |
| of pyrite and rare magnetite and the absence of hematite suggest that the Onikobe system had fs --fo~ conditions...area; MI = Mitaki spa; K = Kanisawa spa; T = Todoroki spa; F = Fukiage spa; M = Miyazawa spa). 4 numerous...occur together in many samples. The laumontite--hematite--epidote assemblage has been found at Tatun (Taiwan)...(1) garnet is not stable, calcite is ubiquitous, hematite was not found, magnetite is not common and pyrite...diagram for pyrite, pyrrhotite, magnetite and hematite. Superimposed are: the pH isopleths (solid lines) |
 | | Journal (article/letter/editorial) |
| Fold Structures in the Aywaille Area (Ardennes, Belgium) By G. MMER, 's-Gravenhage and G. H. MXKEL,Rijswijk...joint pattern in the Aywaille area (Ardennes, Belgium) is analysed with statistical methods. The orientations...B~-I~e2HT~4 HX rpynn~I (pafmH Aywaille, Ardenne, Belgium). 9T~ rpynH~I Tpe~HH npopeaamw H2OCKOCT~ CJI0eB...of the Dinant synclinorium in the Ardennes of Belgium. In this synclinorium sedimentary rocks of Devonian...tourmaline and ore-minerals, cemented by quartz and hematite. Grainsizes are relative uniform; their maximum |
 | | Journal (article/letter/editorial) |
| particulate iron oxides (goethite, lepidocrocite and hematite) as evidenced by electron microscope observations...0.008 wt. %. Clay--SPA systems Rates of 'adsorption' of sodium polyacrylate (SPA) by the sodium-kaolin...adsorption was reversible. A quantity of unlabelled SPA was added to the 50 wt. % slip in an amount to correspond...isotherm in Fig. 5. After 72 hr, a small quantity of SPA-S32 (3 wt. % of that present) was added and the slip...release from sodium-kaoliniteafter contact with SPA for 72 hr at pH 7-3 Molality of stated element molalityhzmolg-1 |
 | Sacchi, Elisa, Re, Viviana, Setti, Massimo, Thin, Myat Mon, Di Sipio, Eloisa (2017) Hydrochemical and Isotopic Features of the Khaung Daing Hot Spring (Inle lake, Southern Shan State, Myanmar) Procedia Earth and Planetary Science, 17. 750-753 doi:10.1016/j.proeps.2017.01.005 | Journal (article/letter/editorial) |
| the outflows has also been conveyed to a private spa resort1. Nevertheless, no data are available in the...spring feeds the water to a recently constructed spa 1. A third small pool is located more uphill and...right (Photo by V. Re); (b) the outflow feeding the spa (Photo by M. Setti). 751 752 Elisa Sacchi et...high proportion of Fe-rich phases (goethite 22%, hematite 12%) and kaolinite (20%) was found. The kaolinite |
 | | Journal (article/letter/editorial) |
| groundwaters and sedimentary bedrock in the Lastochka Spa in the Primorye region of far eastern Russia, together...the origin and evolution of groundwater from the spa. The sedimentary bedrock in this area is mainly highly-permeable...All rights reserved. 1. Introduction Lastochka Spa is located in the northern part of the Primorye region...with China. This spa is well-known in far eastern Russia, and mineral water from the spa is bottled and...and used widely. Although the existence of the spa has been known for more * Corresponding author. E-mail |
 | Adhikari, Dinesh, Poulson, Simon R., Sumaila, Samira, Dynes, James J., McBeth, Joyce M., Yang, Yu (2016) Asynchronous reductive release of iron and organic carbon from hematite–humic acid complexes. Chemical Geology, 430. 13-20 doi:10.1016/j.chemgeo.2016.03.013 | Journal (article/letter/editorial) |
| reductive release of iron and organic carbon from hematite–humic acid complexes Dinesh Adhikari a, Simon...kinetics of hematite-bound organic carbon (OC) during the abiotic reduction of hematite–humic acid (HA)...In this study, we investigated the release of hematite-bound organic matter during the reduction of Fe(III)...analyzed. 2. Materials and methods 2.1. Materials Hematite was purchased from Fisher Chemical (Fisher Scientific...2.2. Synthesis of hematite–HA complexes and characterization for complexes Hematite–HA complexes were |
 | | Journal (article/letter/editorial) |
| rewsed version accepted March 30, 1989 Goethlte and hematite are the main magnetic phases contained m two femferous...stratlgrapincally shghtly younger oohtlc bed. The hematite m the oohtlc bed was magneuzed after the Jura...Jura mare tectomc event m the Miocene whereas the hematite m the Spatkalk was magnetized before the Miocene...however, due to the formation of goethite and hematite during weathering processes in the early Tertiary...g. iron oolites) in which goethite apart from hematite is the major ferric iron oxidic mineral [9]. Chemical |
 | | Catalog/List |
| have an attractive reddish tint due to underlying hematite. Specimen A: 3x2tx1t" , £4 .7 5p . Specimen 0...,Pi nkish masses embedded in foliate d bl ack hematite matrix. 2x1 ", £2.75p . 7 . AZURIrE . Curra -...Casset , IllogQn , Cornw~ ll. Cell ul ar mass of spa r kling sharp deep reddish octahedral crystal s ...'lnd 2du18:'i G f81dspar . 4x3x1-}H ,£8.00 58 . HEMATITE vLlricty SE'ECUU\RIT:::' FlC'rr]n::e i"~ n;::...displnv s pecimen .. ~-x3x2u ~ E1:9 ~5 r'""J 59 . HEMATITE. Ri o i'klriru , ElbD; ~tLl:"y, \lEl~"1 T",:8 |
 | | Journal (issue) |
| the Wa lter Mayfield manganese prospect near Chi spa and is located about 22 miles south ofVan Hom in...Mayfield prospect. Other minerals mentioned are hematite with no description, fluorite (McAnulty 1974)...silicified m atrix would not yie l d. But I did manage to spa II -off the romanechite with bar i tc w ith some...cm. No other c rysta l fo rms we re observed. Hematite: Uncommon. but simple hexagonal platelets were...personal communication, January 2002). Nonetheless, the spa rse nature o f the outcrops do not excl ude the possibi |
 | Auqué, L.F., Acero, P., Gimeno, M.J., Gómez, J.B., Asta, M.P. (2009) Hydrogeochemical modeling of a thermal system and lessons learned for CO2 geologic storage. Chemical Geology, 268 (3) 324-336 doi:10.1016/j.chemgeo.2009.09.011 | Journal (article/letter/editorial) |
| Las Pilas Spring. La Virgen Spa Resort San Jose Spring. La Virgen Spa Resort Fontecabras Mineral Water...Spring. Sicilia Spa Resort San Luis Spring. Seron Spa Resort La Peña Fountain. Seron Spa Resort Las Tosquillas...Termas-Pallarés Spa Resort Guajardo Spring Dehesillas Spring Moro Fountain. Martínez Spa Resort Inhalaciones...Inhalaciones Spring. Cantarero Spa Resort La Alberca Spring Deza Spring Antezuela Spring Piojo Fountain Alhama...Buntsandstein sandstones of the Campine Basin (NE-Belgium). J. Geochem. Explor. 89, 10–14. Bischoff, J.L |
 | Laverret, Emmanuel, Mas, Patricia Patrier, Beaufort, Daniel, Kister, Philippe, Quirt, David, Bruneton, Patrice, Clauer, Norbert (2006) Mineralogy and geochemistry of the host-rock alterations associated with the Shea Creek unconformity-type uranium deposits (Athabasca Basin, Saskatchewan, Canada) Part 1. Spatial variation of illite properties. Clays and Clay Minerals, 54 (3) 275-294 doi:10.1346/ccmn.2006.0540301 | Journal (article/letter/editorial) |
| assemblage also includes Fe minerals (dominantly hematite; locally siderite and/or pyrite), dravite overgrowths...synthetic and natural oxides and silicates (MnTiO3, hematite, albite, orthoclase and diopside) and corrections...(Figure 3b). Early hematite is common as pore-filling material (specular hematite) and as a fine-grained...features include bleaching (loss of diagenetic hematite), quartz dissolution, illitization, chloritization...boundaries are marked by minor amounts of dusty hematite (arrows). Erica 1, 113.3 m, LL formation. (b) |
 | | Journal (article/letter/editorial) |
| razeigle@artsci.wustl.edu) The South Pole-Aitken (SPA) Basin plays a central role in understanding the...basins on the Moon. Determining the absolute age of SPA and the ages of other basins that formed within it...bombardment that affected the inner Solar System. The SPA Basin also plays a key role in understanding the...deep into the lower crust, and materials within the SPA Basin retain a lower crustal signature in geochemistry...mineralogy and lithology. Examination of samples from the SPA Basin will allow us to determine the lithologic makeup |
 | | Journal (article/letter/editorial) |
| in North Humberside. In Italy ECC International SpA extracts marble at Carrara and elsewhere in northwest...through the recent acquisition of Italy's Microcal SpA. In France Cie FrancoAnglaise de Mineraux SA, 80%...operations processing imported material at Lixhe in Belgium and at Koping in Sweden. In the USA, ECC now has...hydrated oxides of iron and manganese, and specular hematite from Dartmoor. Much of today's ochre is derived |
 | | Book |
| British Library Printed in Italy by G. Canale & C. SpA DUNDEE CITY COUNCH. ItOMION MCESSKM NUMBER 1 \COO...called ores. We can get iron from an ore called hematite. Iron is used to make steel. Ores like these are...aluminium. This is a metal used to make cans. <1 Hematite is an ore containing iron. Steel objects are made...to make paints. People once crushed the mineral hematite to produce a reddish-brown powder to make rouge...23, 24-25 granite 6-7, 14, 15 volcanic bomb hematite zircon 20,21,22 igneous rock jewellery talc |
 | | Journal (volume) |
| Road, London W 6 8SD © 2007 De Agostine Editore SpA. • e .,. Crystals of pyrite from Rio Marina on...of the main oxides on the Earth 's surface and hematite is one of the most widespread minerals in the...materials, such as plants, A group of crystals: hematite ...Road, London W6 BSD © 2007 De Agostini Editore SpA. Find out about topaz, anglesite and autunite, and...Road, London W6 8SD © 2007 De Agostini Editore SpA Find out about cuprite, chrysoberyl and aurichalcite |
 | | Journal (article/letter/editorial) |
| and other uncertainties, it should strictly H. Spa& Precambrian polar wandering Fig. 1. Keweenawan...Symons, Paleomagnetism of Precambrian 280 H. Spa& Precambrian polar wandering rocks near Cobalt,...Paleomagnetic evidence on the genesis of the hard hematite ore deposits of the Vermilion Range, Minnesota...the origin of the Marquette and Steep Rock hard hematite and goethite deposits, Can. J. Earth Sci. 4 (1967) |
 | | Catalog/List |
| crystallised crusts on limonitic matrix with sm8ll spa rkli Dg crystals of chrome- cerussit e . 1fx1" ,...crystallised Clinochlore . 3x~x1t " , £1 6 . 00 49 . HEMATITE. Rio Murina , Elbu , It a ly. O:right bl ack sharp...~1ine , P8ndeGn , Cornwall. SpGci men A: Minut e spa rkling silv e rygrey crystals richly cov e ring mavrix... £10 . 00. SpGcimen C: Mi nute s ilvery - gr ey spa rkling crysta l s covering larga arGas of matri x |
 | | Journal (article/letter/editorial) |
| The two-staye transformation of magnetite into hematite a Lars A. Welo & Oskar Baudisch a a From the...The twostaye transformation of magnetite into hematite , Philosophical Magazine Series 6, 50:296, 399-408...e Two-Stage Transfbrmation of ]lagnetite znto Hematite. B y LARS A. WELO and OSK,~R BAUDISCH * XXXIX...Structure. The crystal structures of ,na~netite and hematite are known to be different. Bragg * :rod Nishikawa~...diamond-point structure, and Davey :~ found that hematite is like corundum, which, in turn, resembles calei~e |
