Oct 01 2019nbsp018332Petrographic and geochemical data were obtained for selected carbonaceous and sideritebearing chert and banded iron formation BIF from the Archean Rio das Velhas greenstone belt RVGB Quadril225tero Ferr237fero including seven orogenic gold deposits Cuiab225 Lamego Raposos Ro231a Grande S227o Bento Urubu and 193pis and two barren BIFs Sumidouro and Campo Grande
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In 1947 Longrose Gold Mines drilled 18 short AQsized diamond drill holes totally about 2000m These short holes appear to have been testing structures associated with the nose of folds along the margins of banded iron formation BIF Mineralization within the historical holes indicates narrow highgrade intercepts at BIF contacts
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including banded iron formation BIF are found within the Archean basement They are the main gold bearing formations in Tanzania In the SW of the area Neoarchean undifferentiated granitoids migmatites and metaultrabasites are the main outcropping formations In the NW part of the area younger Mesoproterozoic to Paleozoic formations are found
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Banded IronFormations BIF Stratabound orebodies within thick sequences of ironrich metasediments or BIF and volcaniclastics Also in derived laterites Placer deposits Formed by the mechanical accumulation of economic importantdetrital and resistate minerals 190Paleoplacer deposits 190Young placer deposits
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Iron oxide coppergold IOCG deposits Hitzman et al 1992 are a diverse family of mineral deposits characterised by the following features 1 Cu with or without Au as economic metals 2 hydrothermal ore styles and strong structural controls 3 abundant magnetite andor hematite 4 Fe oxides with FeTi greater than those in most igneous rocks and 5 no clear spatial associations
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Gold mineralization is hosted by a series of parallel and complexly folded horizons of banded iron formation BIF separated by mafic volcanic and minor sedimentary units within the
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Aug 22 2016nbsp018332New Dimension acquired the original 835 square kilometer Savant Lake gold project with the knowledge there were significant occurrences of banded iron formation
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Banded iron formation Battle North also owns a large gold exploration land package on the Long Canyon gold geological or structural evaluations and models including those reflected
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The banded iron formations of the Hamersley Province in the Pilbara region of Western Australia are the thickest and most extensive rocks of this type in the world It is estimated that after they were originally deposited about 2470 to 2450 million years ago they covered some 150 000 km2 and contained about 300 trillion tonnes of iron
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Iron Deposits Banded Iron Formations BIF All the worlds Banded Iron Formations appear to have been formed by an unusual oneoff event
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Oct 17 2019nbsp018332Iron oxidecoppergold IOCG deposits in South Australia and Queensland Australia There are similarities between the Australian IOCG deposits and those in Wernecke in the Yukon Territory Canada The similar time of formation and style of mineralisation suggests that these two areas were once adjacent
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Jul 16 2020nbsp018332Historical mining operations at the Golden Rose gold mine between 19151988 produced approximately 52000 oz of gold from structurally controlled highgrade quartzpyrite veins hosted within two Banded Iron Formations In addition to exploration for gold on the past producing Golden Rose Mine in which gold mineralization is hosted in
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Banded banded vein with chalcedony ginguro band and pink adularia Cracow Photo 23 High grade 948 gt Au 3720 gt Ag adulariasericite epithermal goldsilver vein with abundant mineralised ginguro material Hishikari Photo 24 Toka Tindung eruption breccia with sinter and wood fragments in a
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Jul 29 2020nbsp018332The exploration program will investigate in more details a NWSEoriented goldbearing corridor extending for at least 1 km from which grab sampling yielded gold values of 744 gt Au press release February 2019 and 30 gt Au Biblain showing Leclair et al 1997 RG9711 Stelmine strongly believes an extended exploration will lead to the discovery of new mineralized showings based on
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Gold in banded iron formations make excellent exploration targets because of their scalability Like VMS deposits they are often found in clusters something that is attractive to major gold companies looking for new deposits that can be developed into mines with longevity
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Corpus ID 131798248 Characterization of banded iron formations associated with gold mineralization primary geochemical signatures and exploration implications
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Geophysical methods have been important in the search for gold in the Witwatersrand Basin of South Africa magnetic gravity and even seismic reflection methods various areas of Canada eg the Abitibi greenstone belt magnetic EM and IP surveys and to a smaller extent in Australia eg Tennants Creek NT and Water Tank Hill WA
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Part IV Developments in Iron Ore Exploration Chapter 15 Advances in Geophysics Applied to the Search for Banded Iron FormationRelated HighGrade Hematite Iron Ore Marcus Flis 381 Chapter 16 HighGrade Iron Ore Exploration in an Increasingly SteelHungry World The Past Current and Future Role of Exploration Models and Technological
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Hill 50 Decline part of the Hill 50 Gold Mine group of deposits is located at Mount Magnet 560 km northnortheast of Perth in the Murchison Province of the Yilgarn Craton The Hill 50 orebody is hosted by banded iron formation BIF quotbarsquot of the Sirdar Formation generally having a width greater than 20 m
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He has conducted 3D modelling of vein epithermal and banded iron formation styles of mineralisationm and Mineral Resource and exploration target estimates in accordance with JORC Code 2012 reporting guidelines
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Golden Rose Mine Project Emerald Lake Ontario Conquests Golden Rose Property encompasses patented and staked mining claims measuring 770 hectares in size that encompass the former Golden Rose gold mine and highly prospective North and South banded iron formations at Emerald Lake The property is located 65 kilometres northeast of Sudbury Ontario in Afton and
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Banded iron formations BIF are predominantly Precambrian sedimentary rocks composed of alternating layers of ironrich minerals commonly hematite and magnetite but also siderite chlorite and grunerite and silicarich minerals eg quartz or chert in which the Fe content of the entire rock is at least 15 wt Although typically thought of as strictly Fe resources such as in the
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The spark to put together this volume on banded iron formation BIFrelated highgrade iron ore was born in 2005 during a steamy night in Caraj225s where the iron research group from the Universidade Federal Minas Gerais Vale geologists Carlos Rosi232re and Steffen Hagemann were hotly debating the hypogene alteration genesis for the highgrade jaspilitehosted Serra Norte iron ore deposits
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Banded Iron Formation Banded Iron formations occur in Proterozoic rocks ranging in age from 18 to 25 billion years old They are composed of alternating layers of ironrich material commonly magnetite and silica chert Each layer is relatively thin varying in
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2 2010 PETROGRAPHIC CHARACTERIZATION OF TWO GOLDRICH BANDED IRON FORMATIONS BIFS IN THE FOXE FOLD BELT BAFFIN ISLAND CANADA Germ225n Gonz225lez Garz243n Institute for Mineral Resources Department of Geosciences University of
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The Abu Marawat banded iron formation geology mineralogy geochemistry and origin 5th International Conference on the Geology of the Arab World Cairo University ARE pp 319 334
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Banded iron formation 84L2005 13400 gt Au over 027 m Banded iron formation 84L2002 8490 gt Au over 027 m and 631 gt Au over 120 m including 1440 gt Au over 030 m Banded iron
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Jun 24 2004nbsp018332Our results have important implications for gold exploration Processbased genetic models for gold deposits have already proved useful in the Yandal gold province of
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Jun 15 2019nbsp018332The term orogenic gold deposits has been widely accepted but there has been continuing debate on their genesis Early synsedimentary or synvolcanic models and hydrothermal meteoricfluid models are now invalid Magmatichydrothermal models fail because of the lack of consistent spatially associated granitic intrusions and inconsistent temporal relationships
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Learn how Exploring for IOCG Iron Oxide Copper Gold Ore Deposits using formation models and geophysics before drill will save you a fortune
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Murchison goldfield contains volcanic rocks of the Gabanintha and Golconda Formations The rocks host highgrade volcanogenic massive sulphide mineralisation Gold mineralisation is mostly within banded iron formations It is also found in the quartzfeldspar margins and in the rafts of
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