The stratiform and vein-hosted Kapunda Cu deposit in South Australia contains a saprolitized hydrothermal vein with 12.37 wt.% total rare earth oxide (TREO). The vein was analyzed by X-ray diffraction, scanning electron microscopy, synchrotron-based X-ray fluorescence microscopy and electron backscatter diffraction to understand …
The Boulder Lefroy-Golden Mile fault system in the Archean Yigarn Craton is the most productive gold-mineralized structure in Australia (>2300 t Au). The New Celebration deposit (51 t Au) is part of a group …
The Hamersley Province in the northwest of Western Australia contains extensive banded iron formations (BIFs) and large hematite-goethite deposits. Density …
Two distinct ironstone zones occur close to the Starra system. Along the Selwyn shear zone, east of the deposits, barren hematite-dominated ironstones …
Spans 499.20 hectares, nestled in the expansive, sparsely populated Pilbara region of Western Australia, renowned for its abundant iron ore deposits, lies the birthplace of AusDream ® marble.. The Pilbara region boasts a wealth of geological diversity, encompassing nearly all known rock types and spanning over 3.8 billion years of Earth's …
New mineralogical, geochemical, and geochronological data are presented for the Island Dam prospect, Olympic Cu-Au Province, South Australia. Skarn assemblages comprising actinolite/phlogopite + K-feldspar + magnetite suggest the presence of calcareous protoliths at Island Dam and indicate high-temperature alkali …
The Yungul carbonatite dykes at Speewah in the Kimberley region of Western Australia were emplaced along a north-trending splay from the northeast-trending Greenvale Fault located at the western boundary of the Halls Creek Orogen. The Yungul carbonatite dykes intrude a thick composite sill of the Palaeoproterozoic Hart Dolerite …
Here, we use trace element concentrations in magnetite and pyrite, Fe and O stable isotope abundances of magnetite and hematite, H isotopes of magnetite and actinolite, and Re-Os systematics of magnetite from the Los Colorados Kiruna-type IOA deposit in the Chilean iron belt to develop a new genetic model that explains IOCG and …
Iron Oxide Copper-Gold (IOCG) deposits are a relatively recently recognized type of ore mineral deposit (Hitzman et al., 1992;Barton and Johnson, 1996;Sillitoe, 2003 ...
New petrographic results show that hematite in unmineralized BIF from the ca. 2.5 Ga Dales Gorge Member of the Brockman Iron Formation, Hamersley Group, Western Australia, including morphologies previously interpreted to represent ferric oxyhydroxide precipitates, formed via fluid-mediated replacement of iron-silicates and iron-carbonates …
This paper presents a first summary of results of an ongoing study, started some two years ago, of high-grade iron ore deposits in South Africa, India and Brazil, including a comparison with the ...
Solid geology map of the Weld Range study area in Western Australia showing major lithological associations, structures, rock formation ages, and locations of the BIF-hosted Beebyn and Madoonga iron deposits (modified after Van Kranendonk and Ivanic 2009).The area includes multiply deformed, steeply dipping supracrustal rocks …
The Harmony nickel sulfide deposit (3.2 Mt of ore) is situated along the eastern margin of the Agnew-Wiluna greenstone belt, Eastern Goldfields, Western Australia. The deposit occurs 2 km north of ...
The Geology and Genesis of High-Grade Hematite Iron Ore Deposits N J Beukes 1, J Gutzmer 1 and J Mukhopadhyay 1,2 INTRODUCTION Most world-class high-grade (60 - 67 wt per cent Fe) hematite iron ore deposits are the product of enrichment of Precambrian iron-formations but processes responsible for enrichment are still unclear. Different …
The fluvial goethite–hematite channel iron deposits (CID) of the Pilbara region of Western Australia, formerly known as the 'Robe Pisolite', represent a major …
Apatite is a common magmatic accessory in the intrusive rocks hosting the giant ~1590 Ma Olympic Dam (OD) iron-oxide copper gold (IOCG) ore system, South Australia. Moreover, hydrothermal apatite is a locally abundant mineral throughout the altered and mineralized rocks within and enclosing the deposit. Based on compositional …
The igneous dyke sample from the hanging wall has the same U-Pb zircon age as the footwall, ca. 213 Ma. ... Evidence indicating a supergene origin for hematite includes: (1) ... Curtin University, Perth, WA, 6845, Australia. Noreen J. Evans & Brent I. A. McInnes. School of Earth and Environment Sciences, University of Western Australia, …
The Middleback Ranges is a major iron ore belt in the southeastern region of the Gawler Craton, South Australia, interpreted to be of BIF origin. Iron ore deposits are hosted within ∼2550 Ma ...
The Mineral Systems Atlas is an interactive GIS-based platform that collates and delivers map-based geoscience data layers filtered to be specifically relevant to understanding …
A machine learning approach to discrimination of igneous rocks and ore deposits by zircon trace elements Zi-Hao Wen1,2,3,†, Lin Li3,4,*, Christopher L. Kirkland5, Sheng-Rong Li3,6, Xiao-Jie Sun7, Jia-Li Lei8, Bo Xu1,3, and Zeng-Qian Hou9 1School of Gemology, China University of Geosciences, Beijing 100083, China 2Deutches GeoForschungsZentrum …
DOI: 10.1016/J.PRECAMRES.2016.01.029 Corpus ID: 131494095; Characteristics, origin and significance of Mesoproterozoic bedded clastic facies at the Olympic Dam Cu–U–Au–Ag deposit, South Australia
Karst erosion of the overlying Wittenoom Formation has produced steep-sided buried valleys adjacent to the in situ orebodies that contain thick deposits (<160 m) of goethitic and sideritic sediments, including remnants of Robe Pisolite Formation, bedded siderite, hematite gravels, red ochreous detrital material, and enriched scree deposits …
Red Back Mining NL, P.O. Box 1317, West Perth, Western Australia 6872, Australia. ... Greg Cameron; Greg Cameron Red Back Mining NL, P.O. Box 1317, West Perth, Western Australia 6872, Australia. ... Birimian mafic igneous rocks and Tarkwaian Group sedimentary rocks. Pink albite alteration (albite-quartz-pyrite-hematite-rutile ± leucoxene ...
Miller, R. and Dransfield, M., 2011 - Airborne Gravity Gradiometry and Magnetics in the Search for Economic Iron Ore Deposits: in Proceedings, Iron Ore 2011 Conference, 11-13 July 2011, Perth, Western Australia, The Australasian Institute of Mining and Metallurgy, Melbourne, pp. 109-116
Hematite and goethite from 100 samples collected from various uranium deposits and prospects, associated alteration zones, and overlying Thelon sandstones in the Kiggavik–Andrew Lake structural trend (KALST; Nunavut, Canada) were investigated by EPMA (electron probe micro-analyzer) and LA-ICP-MS (laser ablation-inductively …
The composition of the CID is directly affected by the underlying bedrock, influencing the hematite:goethite ratio, the clay gangue mineralogy and trace element composition …
This paper presents a first summary of results of an ongoing study, started some two years ago, of high-grade iron ore deposits in South Africa, India and Brazil, including a comparison with the ...
The breccias are highly enriched in light (LREE) and heavy rare earth elements (HREE) (avg = approximately 5,000 ppm REE in hematite-rich rocks). Total LREE content and La/Lu ratios are correlated with hematite abundance; maximum La values (10,000 X chondrite) occur in hematite-quartz microbreccias from the geographic center of the …
Although this book is mainly about potassic igneous rocks and hydrothermal gold and gold–copper mineralization in volcanic arc environments, there is increasing evidence for the genetic association between volatile-rich potassic igneous rocks and iron-oxide-Cu–Au (IOCG) deposits (e.g. Campbell et al. 1998; Groves et al. 2010; Soloviev …
The Australian Ore Deposits monograph, published recently by The Australasian Institute of Mining and Metallurgy, has its focus on descriptive summaries of ore deposit …
