 | | Journal (article/letter/editorial) | | AI-Armalcolite 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...assemblage of cordierite, low Ca-pyroxene, plagioclase, ilmenite, ferropseudobrookite-rich armalcolite, iron metal |  | | Journal (article/letter/editorial) | | mudstone xenoliths with native iron from Disko, central West Greenland A.K. Pedersen a and J.G. Ronsbo 2 1...with native iron from the A s u k M e m b e r on Disko contain Ti oxides which are oxygen deficient relative...recorded a m o n g native iron bearing rocks from Disko. The extremely reducing conditions were met in rocks...heretofore been reported as a mineral. On the island o f Disko rutile is widespread in the iron metal bearing...within the native iron bearing volcanic rocks on Disko. This p a p e r describes the p e t r o g r a p |  | | Journal (article/letter/editorial) | | 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...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...grains disseminated in basalt from Asuk on the north coast of Disko, and his expedition of 1880 was even |  | | Journal (article/letter/editorial) | | 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...is: native Fe, troilite, cohenite, ulv6spinel, ilmenite, olivine, and plagioclase, as well as silicate...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 |  | | Journal (article/letter/editorial) | | Paleocene Picrites and Flood Basalts on Disko and Nuussuaq, West Greenland LOTTE M. LARSEN1* AND ASGER K. PEDERSEN2...PEDERSEN2 1 GEOLOGICAL SURVEY OF DENMARK AND GREENLAND (GEUS), STER VOLDGADE 10, DK-1350 COPENHAGEN...rift-related Paleocene volcanic succession in West Greenland comprises voluminous picrites (the Vaigat Formation)...stratigraphy for the c. 3 km combined succession on Disko and Nuussuaq has been established that provides...similar to the source for the E-type lavas on Baffin Island may be present in the earliest rocks. Melting took |  | | Journal (article/letter/editorial) | | 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...aggregates, which contain one or more. of the oxides ilmenite, armalcolite and futile. The arrnalcolite is very...may represent one isobaric invariant assemblage (ilmenite-armalcolite-rutile-iron) and the 3 boundary univariant...ascent and solidification. Introduction The island of Disko is known for the largest and most varied occurrences |  | | Journal (article/letter/editorial) | | 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 |  | | Report (issue) | | 2/15/11 12:39 PM Page 1 IRON ore potential in GREENLAND No. 19 - March 2011 GO_19_GO19_OpenType 2/15/11...ORE 19 / 2011 Iron ore potential in Greenland The Greenland iron ore potential is mainly based on Archaean...amongst the world’s most important iron sources. Greenland also has vast potentials in deposits related to...province. Regional distribution and age of Greenland BIF In Greenland BIF deposits are located at Isua (~3...West Greenland, at Itilliarsuk (~2.85 Ga) in central West Greenland, and in North West Greenland along |  | | Journal (volume) | | VAASJOKI, On Basalt Rocks with Native Iron in Disko, West Greenland . . MAUNU HÄ.RME, A Zoned Skarn Dike in...chlorite, apatite, zircon, chalcopyrite,hematite and ilmenite). But hornblende is altogether missing from the...cobalt pentlandite, chalcopyrite, pyrites, galena, ilmenite, hematite, magnetite, graphite and hydro-pyrrhotite...have been noted in polished sections: pyrrhotite, ilmenite, chalcopyrite, graphite, hematite, sphalerite...2 ON BASALT ROCKS WITH NATIVE IR ON IN DISKO, WEST GREENLAND 1) BY O. VAASJOKI Department 0/ Geology |  | | Journal (volume) | | VAASJOKI, On Basalt Rocks with Native Iron in Disko, West Greenland . . MAUNU HÄ.RME, A Zoned Skarn Dike in...chlorite, apatite, zircon, chalcopyrite,hematite and ilmenite). But hornblende is altogether missing from the...cobalt pentlandite, chalcopyrite, pyrites, galena, ilmenite, hematite, magnetite, graphite and hydro-pyrrhotite...have been noted in polished sections: pyrrhotite, ilmenite, chalcopyrite, graphite, hematite, sphalerite...2 ON BASALT ROCKS WITH NATIVE IR ON IN DISKO, WEST GREENLAND 1) BY O. VAASJOKI Department 0/ Geology |  | | Journal (article/letter/editorial) | | incIusions in natural ironing alloy, Risk0 Island, Greenland Department ofC&ological S&en- Corndl University...reduced by teixstrial standards occur on Disko Island, West Greenland. These IQ& arc the products of SFaction...composition the intragranular s&ate inebrsions Disko, was kindly loaned to us by the Mine~~~~ are enriched...Abundant, small grains of apatite and needles of ilmenite occur in the groundmass or within the outermost...at higher magnification. Small inclllsions of ilmenite (white) and apatite (A) occur in the groundmass |  | Anovitz, Lawrence M., Treiman, Allan H., Essene, Eric J., Hemingway, Bruce S., Westrum, Edgar F., Wall, Victor J., Burriel, Ramón, Bohlen, Steven R. (1985) The heat-capacity of ilmenite and phase equilibria in the system Fe-T-O. Geochimica et Cosmochimica Acta, 49 (10) 2027-2040 doi:10.1016/0016-7037(85)90061-4 | Journal (article/letter/editorial) | | The heat-capacity of ilmenite and phase equilibria in the system FecTi-O* LAWRENCE M. ANOVIT?, ALLANH...have been used to measure the heat-capacity of ilmenite (FeTiO,) from 5 to 1000 K. These measurements...from pubis ex~~rnen~ data on the reduction of ilmenite yield Agnes = - 1153.9kJ/(mol - K). These new...ferropseudobrookite-pseudobrookite,, and hematite-ilmenite;. Preliminary application of this new tbermometer/oxyb~ometer...ph&es during cooling, SAMPLE INT!K)DUCX‘ION ILMENITE,FETIO~, occurs as an accessory phase in a wide |  | | Journal (issue) | | 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 |  | | Journal (article/letter/editorial) | | even minor levels of chromia in the predominantly ilmenite-rich concentrates downgrades their market value...chrome-spinels from the ilmenite. K EY WORDS : chrome-spinel, Murray Basin, ilmenite concentrates, Australia...economic concentrations of rutile, zircon and ilmenite formed as beach placer deposits within the Loxton-Parilla...deposits of the Murray Basin are predominantly ilmenite-rich (40ÿ60%) but may also contain up to 30 to...saleable products, but the production of a clean ilmenite concentrate is hampered by the presence of detrital |  | | Journal (article/letter/editorial) | | likely to form the basement just to the south of the island. The Moine rocks are probably underlain by high-grade...numerous tiny crystals of Fe-rich pleonaste spinel, ilmenite, and new biotite crystals set in K-feldspar-bearing...are replaced by a mixture of spinel, magnetite–ilmenite and alkali feldspar. Such evidence of high-temperature...hercynite [(Mg0·51Fe2+0·49)(Al1·96Fe3+0·04)O4] and ilmenite, with plates of new Ti-poor biotite in a mixture...products of muscovite and biotite. Aggregates of ilmenite–magnetite and spinel may also represent sites |  | de Souza, Zorano Sérgio, Wang, Chao, Jin, Zhen-Min, Li, Jian-Wei, Yang, Junlong, Botelho, Nilson Francisquini, Viana, Rúbia Ribeiro, dos Santos, Larissa, Liu, Peng-Lei, Li, Wei (2019) Pyrometamorphic aureoles of Cretaceous sandstones and shales by Cenozoic basic intrusions, NE Brazil: Petrograhic, textural, chemical and experimental approaches. Lithos, 326. 90-109 doi:10.1016/j.lithos.2018.11.033 | Journal (article/letter/editorial) | | eruptions of active volcanoes on Ruapehu and White Island, New Zealand (Wood, 1994; Wood and Browne, 1996)...2003; Salvioli-Mariani et al., 2005), and El Hierro Island, the Canary Islands (Del Moro et al., 2015), were...tridymite, fayalite, MA pyroxene, mullite, sanidine, ilmenite, rutile, Fe-cordierite (sekaninaite), anorthite...the groundmass. Opaques ACCEPTED MANUSCRIPT (ilmenite and Ti-magnetite) appear disseminated within the...(mainly graphite and ilmenite), clasts of K-feldspar and quartz, pyrometamorphic ilmenite, sanidine, pyroxene |  | | Journal (article/letter/editorial) | | chloritoid, tourmaline, zircon, apatite, spinel, ilmenite, rutile, and graphite. A colourless glass occurs...occurs around the margins of the porphyroblast, and ilmenite and quartz occur as inclusions (Fig. 1a). The...garnet. Elongate bright grains in porphyroblast are ilmenite. Light grey areas within biotite are spinel-rich...The staurolite is associated with graphite and ilmenite (as in the eschweizerbart_xxx eschweizerbart_xxx...Eifel, Germany. Grt ¼ garnet; Bt ¼ biotite; Ilm ¼ ilmenite; Gl ¼ glass. The staurolite exhibits strongly |  | | Report (chapter) | | apparently associated with basalts at Disko Island, West Greenland, Daubr6e took part in the subsequent...Diopside Augite Labradorite/Bytownite Anorthite Ilmenite Chromite Magnetite Garnet Talc Hornblende Chlorite/Serpentine...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 |  | | Journal (article/letter/editorial) | | mantle. The mineral series coexists with Mg-Cr-ilmenite, Nb-Cr-rutile, and Ca-Cr (NbZr) armalcolite that...range in TiOl contentsbridging the gap between ilmenite and rutile, two minerals having a widespread distribution...is proposed that the ubiquitous occurrence of ilmenite intergrowths in kmberlitic rutile results from...category, and relatively common in kimberlites, are ilmenite, chrome-spinel, and perovskite. None of these...minerals occupy a Ti-compositional window between ilmenite and stoichiometric rutile. Identification of the |  | | Report (chapter) | | consisting of ilmenite, rutile and pseudorutile, partially mantled by rutile within ilmenite. The domain...stoichiometry has an XMg value close to 0.202. Host ilmenite with 0.4 mol% hematite is in contact with prismatic...investigate the origin of the pseudomorph, armalcolite– ilmenite reaction coronae were developed around relict...consisting of fine symplectites of either rutile + ilmenite or rutile + titanomagnetite, have also been reported...reported parallel ilmenite–rutile intergrowths and very fine aggregates of ilmenite, rutile, quartz and |  | | Journal (volume) | | 2002 Review of Greenland activities 2001 GEOLOGICAL SURVEY OF DENMARK AND GREENLAND MINISTRY OF THE...Y B U L L E T I N 1 9 1 • 2 0 0 2 Review of Greenland activities 2001 Edited by A. K. Higgins, Karsten...Sønderholm GEOLOGICAL SURVEY OF DENMARK AND GREENLAND MINISTRY OF THE ENVIRONMENT GSB191-Indhold 13/12/02...Side 2 Geology of Greenland Survey Bulletin 191 Keywords Geological mapping, Greenland activities 2001...View to the east from a vantage point on the island of Disko. Photo: Stig A. Schack Pedersen. Frontispiece: |  | | Journal (issue) | | 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 |  | | Journal (article/letter/editorial) | | Al-armalcolite and native iron in a lava from Asuk. Disko. central West Greenland.Contributions to Mineralogy...CosmochimicaActa, Supplementll, l, l17124 Steele,I.M. (1974) Ilmenite and armalcolite in Apollo l7 breccias.American |  | | Journal (article/letter/editorial) | | the exsolution of mullite from sillimanite and ilmenite from corundum. Glass resulting from the melting...64-69), quartz, sillimanite, mullite, magnetite and ilmenite, crystallized from the peraluminous buchite melt...component as a result of oxidation. Compositions of ilmenite and magnetite (single, homogeneous and composite...increasing Fe 3+ , Al and decreasing Ti4 + , Fe 2+ in ilmenite, and increasing Fe2 + , Ti 4+ and decreasing Fe...oxidation is reached with exsolution of rutile from ilmenite and formation of titanhematite and with exsolution |  | | Journal (issue) | | . . . . . . . . . . . . . . . . . . . . . . . Ilmenite . . . . . . . . . . . . . . . . . . . . . . ..... . . Relations of sulphides to silicates and ilmenite . . . . . . . . . . . . . . . . . . . List of...only nickeliferous pyrrhotite so far known in Greenland is given a very thorough ore-microscopic description...Northeast coast of the island of Disko, which in turn lies off the West coast of Greenland. The ore was contained...basalt complex which i. a. forms the main part of Disko and the neighbouring regions of the Greenlandic |
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