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| PLAGIOCLASE-SPINEL-GRAPHITEXENOLITHS IN METALLIC IRON-BEARING BASALTS, DISKO ISLAND, GREENLAND Wrr,rrau...C. Ansrnac:t Tertiary basalt flows from west Greenland commonly contain metallic iron and graphite. They... rose-colored spinel and rarely corundum are included in these basalts on Disko Island. The xenoliths...oI graphite and in the composition of the spinel. The spinel has n:1.747 +0.001, o:8'119+0.002 and D:3...gave Mg : 13 and Fe:8.9/6. These data indicate a spinel with composition about spzaHezz.This unusually |
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| THEUIVFAQDIKEANDRELATED HYBRID DIKESFROMSOUTHERN DISKO, WESTGREENLAND FJELD RELATIONS BY ERLING FUNDAL...THEUIVFAQDIKEANDRELATED HYBRID DIKESFROMSOUTHERN DISKO, WESTGREENLAND FIELD RELATIONS BY ERLING WITH...geological and magnetic study of the Uivfaq locality in southern Disko, which is known for its large boulders...closely related to the Uivfaq dike. The dike has the same strike and dip as the Uivfaq dike and also contains...exposed at several places in southern and central Disko, leaves the gneiss at Kitdlit and continues northwards |
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| SCHREIBERSITE, AND SULPHIDES FROM TERTIARY BASALTS ON DISKO, GREENLAND By HANS PAULY* Abstract. In a short historic...the essential features of the iron occurrences on Disko. Tiny grains of iron are found scattered through..."white cast iron nature" of the massive iron from Uivfaq so often described in the literature. From the...for more than 100 years from the west coast of Greenland (BØGGILD, 1953). FORCHHAMMER (1854) described...It was collected at Niakornak, east of Disko, on the Greenland mainland (see map fig. 1). FORCHHAMMER |
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| Sulphide Liquids from a Basaltic Dyke on Disko, Central West Greenland by FINN ULFF-M0LLER Geologisk Museum...ledge in the sediment-contaminated Kitdlit dyke on Disko. The lens displays a mineralogical diversity and...implications. INTRODUCTION The Lower Tertiary West Greenland Basalt Province (Clarke & Pedersen, 1976) is famous...iron-bearing volcanic rocks on Disko island. Theories for the origin of the 'Disko iron' include (a) meteorite...et al, 1981). The extensive literature on the 'Disko iron' (reviewed by Sjogren, 1916; B0ggild, 1953; |
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| elements in natural metallic iron from Disko Island, Greenland* W. Kli~ck 1, H. Palme 1, and H.J. Tobsehall...natural metallic iron on Earth is on the island of Disko, Greenland. Metallic iron is found there in a variety...upper mantle of the Earth, a mantle origin for the Disko metals can also be ruled out. This supports earlier...meteorites. Since Nordenski61d's expedition to Greenland in 1870, the existence of large lumps (several... tons) of metallic iron is known from the island of Disko (Nordenski61d 1872). Metallic iron is also |
 | Robin, Eric, Swinburne, Nicola H.M., Froget, Laurence, Rocchia, Robert, Gayraud, Jérôme (1996) Characteristics and origin of the glass spherules from the Paleocene flood basalt province of western Greenland. Geochimica et Cosmochimica Acta, 60 (5) 815-830 doi:10.1016/0016-7037(95)00433-5 | Journal (article/letter/editorial) |
| the Paleocene flood basalt province of western Greenland ROBIN,’ NICOLA H.M. SWINBURNE,*.* LAURENCE FROGET...Paleocene sandstone beds in central Nuussuaq, western Greenland. These beds are a mixture of glass, smectite,...Fe-bearing basalts and andesites in the Nuussuaq and Disko area. This origin is further supported by the high...particularly striking unit within the sequence of lavas on Disko, the Asuk Member of the Vaigat Formation. The Asuk...(Fig. 1) , a peninsula on the western coast of Greenland (Margolis et al., 1991 b). Previous investigations |
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| sedimentcontaminated Tertiary volcanics from Disko Island, Greenland Cyrena Anne Goodrich* and P. Jonathan Patchett...sedimentcontaminated Tertiary volcanics from Disko Island, Greenland. Lithos, 27:13-27. Nd and Sr isotopic data...for metallic iron-bearing volcanics from Disko Island, Greenland. These rocks are the products of contamination...the earliest contaminated sequences in the West Greenland basalt province, can be modelled as a simple mixture...Introduction The Tertiary volcanic province of Disko Island, West Greenland, which is one of the provinces of plateau |
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| 01 )Σ=3.00 O4 . (2) TiFe2 O4 . Mineral Group: Spinel group. Occurrence: A common component of titaniferous...kimberlite pipe, Sakha, Russia. On Disko Island, near Uivfaq and Kitdlı̂t, Greenland. At the Mooihoek Farm, Lydenburg...the Ulvö Islands, Sweden, and as a member of the spinel group. Type Material: n.d. All rights reserved |
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| graphite andesite volcano, Nuussuaq, central West Greenland Asger Ken Pedersen a,⁎, Lotte Melchior Larsen...Copenhagen K, Denmark Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK 1350 Copenhagen K, Denmark...chemically similar subaerial lavas and breccias from Disko and Nuussuaq contain less graphite and more iron...Graphite; Volcano; Paleocene; Nuussuaq Basin; Greenland 1. Introduction ⁎ Corresponding author. Tel...Nuussuaq Basin in central West Greenland and in particular the island of Disko is known for its large and |
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| of These Assemblages in Basalts from Ovifak, Greenland, and Biihl, Federal Republic of Germany Olaf Medenbach...Kassel (West Germany) and Ovifak on Disko Island (West Greenland). The typical assemblage of these xenoliths...near Kassel, West Germany, and Ovifak (Disko Island), West Greenland. The origin of these iron xenoliths...native-ironbearing acid volcanic rocks from the NW Disco island, approximately 100 km north of the classical Ovifak...Sample Description Ulv6spinel, F%TiO4, an inverse spinel, is a common mineral in strongly reduced magmatic |
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| case study of the Hanekammen Complex on Disko Island, West Greenland FINN ULFF-M.~LLER Geologisk Museum,...DISCOVERY cast (NORDENSIUOLD, 1872) the native iron Disko Island, West much attention. ironbearing volcanic rocks...types of metallic iron from a dyke at Uivfaq on south Disko Island petrographically and by microprobe....trace element study of Ni-rich iron spherules from Uivfaq and of two andesitic rocks with dispersed Ni-poor...contaminant in many other contaminated sequences on Disko Island. which represent equilibrated shale (PEDERSEN |
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| and Native Iron in a Lava From Asuk, Disko, Central West Greenland Asger Ken Pedersen Geologisk Museum...enclosed in basalt in a native iron bearing lava from Disko is similar in chemistry, apart from volatile components...Tertiary carbonaceous shale sediments from West Greenland, believed to have been the major contaminant and...formation of the native iron in the volcanic rocks on Disko. The shale buchite has preserved original sedimentary...Since the first major description of native iron on Disko by Nordenskj61d (1870) a large number of theories |
 | Kanellopoulos, Christos, Valsami-Jones, Eugenia, Voudouris, Panagiotis, Stouraiti, Christina, Moritz, Robert, Mavrogonatos, Constantinos, Mitropoulos, Panagiotis (2018) A New Occurrence of Terrestrial Native Iron in the Earth’s Surface: The Ilia Thermogenic Travertine Case, Northwestern Euboea, Greece. Geosciences, 8 (8) 287 doi:10.3390/geosciences8080287 | Journal (article/letter/editorial) |
| travertine deposit, located at Ilia area (Euboea Island, Greece). The deposit is forming around a hot spring...occurrences are from the basalt at Ovifak, Disko Island, Greenland [16–19], from the Bühl basalt, Kessel,...Ray-Iz ophiolite, Polar Urals [41] and from Skyros island, Greece [42]. Native iron has been identified in...pipe in association with ferropericlase and chrome spinel [47], both from the Juina area, Brazil, and from...active fumaroles at the Kudryavy volcano, Iturup Island (group of Kuril Islands). Native iron on Earth |
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| apparently associated with basalts at Disko Island, West Greenland, Daubr6e took part in the subsequent...This view changed following an expedition to Greenland in May 1870, led by the Finnish geologist, mineralogist...(1832-1901). Since 1818 previous explorers of Greenland had noted that the indigenous population used...find at Fortune Bay on Disko Island (located off the west coast of Greenland at approximately latitude...(1852), Mellemfjord and Assuk (Asuk, 1872) on Disko Island; and from Niakornaok (1847) on the mainland |
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| Sulphide Bodies With Native Iron From Disko, Central West Greenland Asger Ken Pedersen Geologisk Museum...occurrence of strongly Ni-depleted reduced basalts on Disko shows that fractionation of metal and sulphides...iron-bearing volcanic rock units in Disko and Nfigssuaq, Central West Greenland. Sulphide blebs with native iron...(Nichiporuk et al., 1967). The glassy dyke rock from Disko to be described below provides an example of basalt...dyke) a native iron-bearing basaltic dyke in South Disko (Fig. 1), and Pedersen (1977) made additional observations |
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| quantities of minerals have been sent home from Greenland. These minerals originate from different sources...material has naturally been collected in East Greenland by the numerous expeditions of later years, whereas...increase the size of the hook. As far as West Greenland is concerned, the geological conditions are rather...peninsulas of Svartenhuk and ugssuaq and the island of Disko, is built up of plateau basalt, several km...which chiefly occur in the southernmost part of Greenland. As elsewhere, the occurrences of minerals in |
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| carbide + spinel Fe7C3 orthorhombic (two lamellae) SiC within lamellae Cr-Mn-Fe spinel (cubic) KAMINSKY...according to electron-diffraction data, has a cubic spinel-like structure. There are several micropores between...left part of the image an idiomorphic crystal with spinel-type structure is observed intergrown with carbonitride...demonstrate a wide compositional range of post-spinel oxides decomposed to ferrite and graphite, reflecting...rock from near the Niakornak location on the Island of Disko in Zayakina 1991). Subsequently, cohenite has |
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| basalts and magnesian andesites from Di ko, West Greenland by Asger Ken Pedersen KØBENHAVN 1985 Grønlands...kr.12O.00 Greenland. 1980 by J. M. Hurst. O. 139 Triassic Iithostratigraphy of ast Greenland between Scoresby...and faunas on the north coast of Ogssuaq, West Greenland. 1981 by Leifur A. Sfmonarson. D.kr. 160.00 o...graptolites from Washington Land, we tem orth Greenland. 1981 by M. Bjerreskov. D.kr. 11200 o. 143 Stratabound...mineralisation in the Permo-1iiassic af central Bast Greenland. 1982 by B. Thomassen, L. B. Oemmensen & H. K |
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| variable substitution of Mg and A1 in the spheroids' spinel phase [6], and possibly the presence of an authigenic...elements [4,9], and the magnetic spherules' unusual spinel com- positions [6]. Derivation either directly...been disputed [54]. Magnesioferrite and ferrian spinel, the principal magnetic phases in the K / T spherules...Cretaceous, early Tertiary basalts from Disko Island, West Greenland, most likely originated from in situ...per cent are reported for the Disko Fe [62]. I r / N i values for Disko Fe are plotted in Fig. 6, and |
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| Volcanic Rocks with Native Iron from Disko, Central West Greenland A.K. Pedersen Geologisk Museum, fOster...to daci~ic lavas from the Maligfit Formation on Disko contain an early phenocryst assemblage of plagioclase...ascent and solidification. Introduction The island of Disko is known for the largest and most varied occurrences...occurrences at Hammers Dal (Ulff-Moller 1977) and Uivfaq (Nordenski61d 1870; Steenstrup 1875; L6fquist and...surface. Several iron-bearing volcanic rocks on Disko show evidence of a strong progressive reduction |
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| Narssarssuk, Greenland. Photo by R. Bode. TITLE PAGE: The most common mineral in Greenland: ice —making...up the typical Arctic icebergs, ubiquitous in Greenland waters; photo by B. L. Nielsen. This special...AMMASSALIK (ANGMAGSSALIK) GEOLOGICAL MAP OF GREENLAND NUUK (GODTHAB) PAAMIUT (FREDERIKSHAB) ARSUK...Paleozoic and Mesozoic North Greenland platform and fold belt East Greenland Caledonian fold belt P rote...Archaean i 500 km i i i i PREFACE Throughout Greenland there are many interesting mineral localities |
 | Shi, Guang-Hai, Zhu, Xiang-Kun, Deng, Jun, Mao, Qian, Liu, Ying-Xin, Li, Guo-Wu (2011) Spherules with pure iron cores from Myanmar jadeitite: Type-I deep-sea spherules?. Geochimica et Cosmochimica Acta, 75 (6) 1608-1620 doi:10.1016/j.gca.2011.01.005 | Journal (article/letter/editorial) |
| Blanckenburg, 2006). They are also higher than the spinel from fore-arcs and continental margins (d57Fe =...al., 2003). On the Nuussuaq peninsula, Western Greenland, glass spherules were also found in sedimentary...1986), as well as microspheres with crystalline spinel (Meeker and Hinkley, 1993). However, no iron core...g., Brownlee, 1985; Herzog et al., 1999), (2) Greenland lake deposits (Maurette et al., 1991), (3) Antarctic... S. (1977) Native iron occurrences of Disko Island. Greenland. J. Geol. 85, 359–371. Bird J. M., Goodrich |
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| parageneses are known from basaltic rocks from Disko Island, Greenland (Goodrich and Bird 1985; Ulff-Møller 1985)...calibrated on highly stoichiometric cohenite from Disko, Greenland (Goodrich and Bird 1985). Pure Fe3C from a...white cast iron (WCI, UlffMøller 1985) from Disko Island, Greenland has a bulk composition of 44 wt% Fe3C,...stable isotope analyses. Cyrena Goodrich provided a Disko cohenite standard and gave valuable insights into...iron-carbon alloys in basaltic magma at Uivfaq, Disko Island; the role of carbon in mafic magmas. J Geol |
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| STRUCTURAL STUDIES IN THE PRE-CAMBRIAN OF WESTERN GREENLAND III SOUTHERN SUKKERTOPPE DISTRICT BY ASGER...STRUCTURAL STUDIES IN THE PRE-CAMBRIAN OF WESTERN GREENLAND III SOUTHERN SUKKERTOPPEN DISTRICT BY ASGER...Struetural Studies in the Pre·Cambrian of Western Greenland. 5 lite metamorphism ean be matched with the...under the auspicies of the Geological Survey of Greenland (GGU) within the Southern Sukkertoppen district...mapping on the behalf of the Geological Survey of Greenland (GGU). This mapping was continued in 1953 and |
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| inclusions in an ironcarbon alloy from Disko Island, Greenland (Goodrich, 1984); in a syenitic intrusion...few experiments and a phase noted only in the Disko Island silicate inclusions (Goodrich, 1984). We determine...olivine of 0.02– 0.5 (Henderson 1968; Anderson and Greenland, 1969; Toplis et al., 1994a,b; Brunet and Chazot...MnO MgO CaO Na2O Brahin Rawl Spwtr1 Zaisho2 Uivfaq iron incl,3 1 4 9 2 4 6 3.82 36.5 n.a. n...Buseck and Clark (1984). Intragranular inclusion in Uivfaq iron from Goodrich (1984). Pyrometamorphic syenitic |
