 | | Report (issue) | | Petroleum, Energy and Mines, Islamic Republic of Mauritania Second Projet de Renforcement Institutionnel...Epithermal Gold Deposits in the Islamic Republic of Mauritania: Phase V, Deliverable 69 By Richard J. Goldfarb...epithermal gold deposits in the Islamic Republic of Mauritania, (phase V, deliverable 69), chap. H of Taylor...Gold-Dominant Mineral Deposits and Occurrences in Mauritania ............................................................ 3 3.2 Northern Mauritanides (Inchiri Region) ......................................... |  | Keyser, William, Ciobanu, Cristiana L., Cook, Nigel J., Johnson, Geoff, Feltus, Holly, Johnson, Steve, Dmitrijeva, Marija, Ehrig, Kathy, Nguyen, Phung T. (2018) Petrography and trace element signatures of iron-oxides in deposits from the Middleback Ranges, South Australia: From banded iron formation to ore. Ore Geology Reviews, 93. 337-360 doi:10.1016/j.oregeorev.2018.01.006 | Journal (article/letter/editorial) | | Manuscript Petrography and trace element signatures of iron-oxides in deposits from the Middleback Ranges, South...South Australia: from banded iron formation to ore William Keyser, Cristiana L. Ciobanu, Nigel J. Cook...Nguyen, Petrography and trace element signatures of iron-oxides in deposits from the Middleback Ranges, South...South Australia: from banded iron formation to ore, Ore Geology Reviews (2018), doi: https://doi.org/...pertain. Petrography and trace element signatures of iron-oxides in deposits from the Middleback Ranges, South |  | Appel, P. W. U., Bliss, I. C., Coller, D. W., Grahl-Madsen, L., Petersen, J. S. (2000) Recent gold discoveries in Archaean rocks of central West Greenland. Applied Earth Science, 109 (1) 34-41 doi:10.1179/aes.2000.109.1.34 | Journal (article/letter/editorial) | | proximity to Nuuk, the capital of Greenland. The Nuuk region is underlain by a range of mainly Archaean rocks...zinc and gold mineral occurrences and large banded-iron formations, including one with approximately...molybdenum mineralization.2,4,5 The geology of the Nuuk region has received detailed attention from the Geological...minerals was limited to investigations of the banded-iron formation at Isukasia and parts of the Mid- to Late...revival of interest in the economic potential of the region was led by Nunaoil A/S, a company owned jointly |  | | Report (issue) | | GO_19_GO19_OpenType 2/15/11 12:39 PM Page 1 IRON ore potential in GREENLAND No. 19 - March 2011 GO_19_GO19_OpenType...GEOLOGY AND ORE 19 / 2011 Iron ore potential in Greenland The Greenland iron ore potential is mainly based...based on Archaean sedimentary and chemical iron deposits (BIF). However, notable occurrences related...demonstrated prominent iron ore accumulations. BIF type occurrences deliver the majority of iron ore and are amongst...important iron sources. Greenland also has vast potentials in deposits related to banded iron formations |  | Nutman, Allen P., Allaart, Jan H., Bridgwater, David, Dimroth, Erich, Rosing, Minik (1984) Stratigraphic and geochemical evidence for the depositional environment of the early archaean isua supracrustal belt, southern west greenland. Precambrian Research, 25 (4) 365-396 doi:10.1016/0301-9268(84)90010-x | Journal (article/letter/editorial) | | sedimentation, shown by interlayers of banded iron formation, metachert and calc-silicate rocks throughout...original andesitic to dacitic volcanic rocks. Banded iron formations locally contain conglomeratic structures...(1980) studied the geochemistry of metacherts and banded iron formations and described isolated mineralogical...pebble conglomerate' 3 Variegated schist 2Lower banded ironstone 1Amphibolite SEQUENCE B FORMATIONS 2Mica...amphibolite formation; (A2) lower banded iron formation; (A3) variegated schist formation; (A4) upper |  | | Report (issue) | | future mining Shield formation and cratonisation in Greenland, created by the formation of continental and...period of huge crustal formation, major mineral deposits of gold and banded iron formations were developed...intrusions, fold belts and sedimentary basins. Banded iron formation in a sequence of amphibolite and pelitic...North-West Greenland. The width of the banded iron formation varies from 0.7 to 1.6 m. Introduction...mineral resources in Greenland, as a ‘greenfield’ region with rather high exploration and mining expenses |  | | Report (issue) | | Scotland 3 Aeromagnetic anomalies in the Gairloch region 3 9 13 4 Schematic geology of the Loch Maree...Lair and Creag Dharaich Hornblende Schists 12 Banded quartz-magnetite rock from the Lower exhalite band...deposits are closely associated with banded iron formations (BIFs) and iron-rich exhalites are present in the...include massive and microbanded iron oxide facies, together with various banded silicate and sulphide facies...Road and the presence of sulphide-bearing and banded iron formations with significant gold values (up to |  | | Journal (article/letter/editorial) | | arborescent nugget comprises a broad irregular core region of massive auriferous Pd–Hg alloy (potarite; ␦-PdHg)...Mount Condado. The Espinhaço Supergroup in the region comprises quartzites, metaconglomerates and phyllites...local intercalations of metamafic rocks and banded iron formation. The Minas Supergroup comprises itabirites...itabirites (metamorphosed banded iron-formation; black) and mixed lithologies of quartzites with pyritiferous...muscovite schists, quartzites, phyllites, banded iron-formation, mafic schists, and serpentinites with chromitite |  | | Report (volume) | | Brecciated chert overlying serpentinite 7 5. Banded iron-formation 8 6. Debris flow deposits 9 7. Pillow structures...blocks of pyritic chert and associated banded iron-formation. These deposits, formed by sea-floor exhalative...gravity to their present chaotic setting during formation of the melange. Younger gold occurrences, including...altered fault zones that are younger than the formation of the melange. They are akin to the fault-controlled...geologic environment is similar. Chert and iron formation in island-arc terranes east of the study area |  | | Report (issue) | | Optical Class: n.d. Pleochroism: Bluish gray to rusty brown. Anisotropism: Weak to distinct. R1-R2: (470)...metamorphosed banded iron formation. Association: Potarite, atheneite, hematite. Distribution: Cauê iron-ore deposit...new platinumgroup mineral species from the Cauê iron-ore deposit, Itabira District, Minas Gerais, Brazil |  | | Journal (article/letter/editorial) | | Dresbachian triIobites and matigraphy of the Cass Fjord Formation western land. 1981 by A. . Palmer &: J. S. Peel...depositional environment was probably an immersed volcanic region remote from areas of significantly older crust...Conglomeratic structures in a metachert and banded iron formation unit suggest shoaling and shallow water.... . . . . . . . . . . . . . . . . . . . . . . . Iron ore............................. Gold.............investigations identified a major arcuate 'schist formation' unit (now called the Isua supracrustal belt) |  | | Report (issue) | | all available knowledge and data for a specific region (tract) to assess the possibility of finding undiscovered...Differences in P–T conditions of orogenic gold formation have been used to subdivide the deposits into...iga Nuuluk 61°30'N Bikuben and • Iterlak: Banded quartz-pyrite rocks host the gold mineralisation...belts. Left: Finely laminated banded iron formation at Iterlak with grey iron-oxide and white quartz-rich...Iterlak. Figure 5. Right: Iron-stained mineralisation at Nuuluk. The rusty red colouration stems from |  | Ganno, Sylvestre, Tsozué, Désiré, Kouankap Nono, Gus Djibril, Tchouatcha, Milan Stafford, Ngnotué, Timoléon, Gamgne Takam, Ruth, Nzenti, Jean Paul (2018) Geochemical Constraints on the Origin of Banded Iron Formation-Hosted Iron Ore from the Archaean Ntem Complex (Congo Craton) in the Meyomessi Area, Southern Cameroon. Resource Geology, 68 (3) 287-302 doi:10.1111/rge.12172 | Journal (article/letter/editorial) | | Geochemical Constraints on the Origin of Banded Iron Formation-Hosted Iron Ore from the Archaean Ntem Complex...Cameroon Abstract Banded iron formations (BIFs) are the most significant source of iron in the world. In...southern Cameroon, and discuss their genesis and the iron enrichment process. Field investigations and petrography...geochemical composition of the whole rock reveals that iron and silica represent more than 98 wt% of the average...detritus-free marine chemical precipitates. The total iron (TFe) contents range from 48.71 to 65.32 wt % (average |  | Posth, Nicole R., Köhler, Inga, D. Swanner, Elizabeth, Schröder, Christian, Wellmann, Eva, Binder, Bernd, Konhauser, Kurt O., Neumann, Udo, Berthold, Christoph, Nowak, Marcus, Kappler, Andreas (2013) Simulating Precambrian banded iron formation diagenesis. Chemical Geology, 362. 66-73 doi:10.1016/j.chemgeo.2013.05.031 | Journal (article/letter/editorial) | | com/locate/chemgeo Simulating Precambrian banded iron formation diagenesis Nicole R. Posth a,1, Inga Köhler...Keywords: Mineral diagenesis Mineral transformations Banded iron formations Anoxygenic phototrophs Biogenic minerals...processes in ancient sediments, such as Precambrian banded iron formations (BIFs), difficult. While microorganisms...environments using ancient sediments, such as banded iron formations (BIFs). The principal era of deposition...(Fe2O3), iron carbonates such as siderite and ankerite (Ca(Fe,Mg,Mn)(CO3)2), and various iron-silicate |  | | Journal (article/letter/editorial) | | zinc, niobium, tantalum, zirconium, hafnium, REE, iron, titanium, vanadium, fluorite and graphite, and...stratabound uraninite mineralisation. Orthomagmatic iron-titanium-vanadium mineralisation is hosted by a...formed across South Greenland. An TE orthomagmatic iron-titanium-vanadium deposit is hosted by troctolitic...deformation during Palaeoproterozoic orogeny in the formation of ACCEPTED MANUSCRIPT widespread gold mineralisation...et al. (2011). Quaternary glaciers covered the region with the possible exception of NU the highest |  | | Report (issue) | | guidebook is a resumé of the general geology of the region and is intended to provide general information...along or close to the principal highways in the region. The locations and means of access are indicated...extensive literature available on the geology of the region. For those who wish to go beyond the scope of this...available only in libraries. Bartley, M.W. 1939: Iron deposits of the Steeprock Lake area; Ont. Dept.... Minneapolis. Goodwin, A.M. 1960: Gunflint iron formation of the Whitefish Lake area, District of Thunder |  | Coats, J. S., Shaw, M. H., Smith, R. T., Rollin, K. E., Smith, C. G., Fortey, N. J. (1996) Mineral exploration for gold and base metals in the Lewisian and associated rocks of the Glenelg area north-west Scotland. Mineral Reconnaissance Programme Report 140. British Geological Survey | Report (issue) | | QMS) from Gairlocb and average compositions of banded ironstones from Canada 63 Summary statistics...underlain by iron-rich rocks, called eulysites in the literature, at Carr Brae near Loch Duich. Iron-rich rocks...and would now be generally described as a banded iron formation or BIF. This orientation work showed that...sampling completed of the outcrops of the banded iron formation and associated lithologies discovered during...eclogite derived from igneous rocks. Distinctive iron-rich rocks, called eulysites by Tilley (1936) also |  | | Report (issue) | | ............................................ 3 Iron oxide minerals ...................................crystals and cu bic aggregates, partially oxidized to rusty brown goethite (Baker Patton deposit) .................... 51 Blaek and White Plates A Banded iron formation showing magnetite and quartz bands (Knee...8 Various iron oxide minerals can be readily seen iron in outcrops in Manitoba; iron-titanium and...show octahedral partings. Magnetite is an important iron-ore mineral in Ontario, Quebec and Labrador. Elsewhere |  | Haugaard, Rasmus, Ootes, Luke, Creaser, Robert A., Konhauser, Kurt O. (2016) The nature of Mesoarchaean seawater and continental weathering in 2.85 Ga banded iron formation, Slave craton, NW Canada. Geochimica et Cosmochimica Acta, 194. 34-56 doi:10.1016/j.gca.2016.08.020 | Journal (article/letter/editorial) | | seawater and continental weathering in 2.85 Ga banded iron formation, Slave craton, NW Canada Rasmus Haugaard...seawater and continental weathering in 2.85 Ga banded iron formation, Slave craton, NW Canada, Geochimica et...seawater and continental weathering in 2.85 Ga banded iron formation, Slave craton, NW Canada Rasmus Haugaard1*...Canada *Contact: rasmus@ualberta.ca Abstract Banded iron formations (BIF) have been extensively used as...enriched with (Pr/Yb)SN values reaching <0.2. The iron bands are more enriched, with average ∑REE of 26 |  | | Journal (article/letter/editorial) | | by similar rocks elsewhere in the Godthåbsfjord region (Bridgwater and McGregor, 1974; Moorbath et al...geology Fig. 1. Geological map of the Godthåbsfjord region. Locations of the Paleoarchaean rocks and terrane...pillow lava and pillow lava breccia, chert, banded iron formation, and a minor component of clastic sedimentary...while rocks similar to the metachert and banded iron formation in the belt form smaller enclaves. One ultramafic...in the host amphibolitic gneiss, and pegmatite-banded tonalitic gneiss was deformed by west-verging Neoarchaean |  | | Journal (article/letter/editorial) | | pp. 365–386 Genesis of High-Grade Iron Ores of the Archean Iron Ore Group around Noamundi, India NICOLAS...Africa Abstract High-grade hematite ores of the Iron Ore Group in the Noamundi area, Jharkhand state...hosted by a laterally extensive, 220-m-thick banded iron formation (BIF) in a folded greenstone belt succession...through introduction of iron by hydrothermal fluids of meteoric origin. Hematite iron ore pebbles in a conglomerate...of the hard hematite orebodies. Soft saprolitic iron ores formed as a product of lateritic weathering |  | | Report (issue) | | 181 · 1999 Precambrian geology of the Disko Bugt region, West Greenland Edited by Feiko Kalsbeek GEOLOGICAL...data for Precambrian rocks from the Disko Bugt region, West Greenland .................... ............activity in the Archaean basement of the Disko Bugt region and eastern Nuussuaq, West Greenland: evidence...launched a number of expeditions to the Disko Bugt region in central West Greenland (Fig. 1), the ‘Disko...enhance the general geological knowledge of the region, especially the eastern (Precambrian) parts being |  | | Journal (article/letter/editorial) | | determination of the age of a formation by its likeness to a certain formation as described in an accepted...Coutchiching series, which he believes to be the oldest formation in the area. The Coutchiching rocks consist of...supplied, but not far enough out to allow the formation of limestones, assuming that conditions were suitable...agglomerates; (12) gray siliceous slates and schist; (13) banded cherts; (14) mica schists; (15) limestone."2 This...BRUCE to have been no erosion period between the formation of the two series. Lawson considered the Coutchiching |  | Hren, Michael T., Lowe, Donald R., Tice, Michael M., Byerly, Gary, Chamberlain, C. Page (2006) Stable isotope and Rare Earth Element evidence for recent ironstone pods within the Archean Barberton greenstone belt, South Africa. Geochimica et Cosmochimica Acta, 70 (6) 1457-1470 doi:10.1016/j.gca.2005.11.016 | Journal (article/letter/editorial) | | considerable debate about the mode and age of formation of large (up to 200 m long) hematite and goethite...ironstones to determine whether these deposits reflect formation from sea-floor vents in the Archean ocean or from...from 125 to 146&, which is consistent with formation from modern meteoric waters at 20 to 25 °C. Hematite...from 0.7 to 2.0&, which is consistent with formation at low to moderate temperatures (40–55 °C) from...high percentage of oxidized iron, frequently found in discrete alternating iron and silica-rich bands or |  | | Journal (volume) | | potential of the Nordre Strømfjord – Qasigiannguit region, southern and central West Greenland H. Stendal...ultramafic alkaline rocks in the Sisimiut–Kangerlussuaq region, southern West Greenland S.M. Jensen, H. Hansen...marine siliciclastic sediments of the Ravnefjeld Formation, East Greenland J.K. Nielsen and N.-M. Hanken...Systematic mapping was undertaken in 2001 in the Aasiaat region of central West Greenland, located at the transition...(4, 5, 6) Svartenhuk Halvø region; airborne geophysics (7) Nuussuaq region; general geology, landslide |
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