| | Journal (issue) | Switzerland Famous mineral localities: zeolites from Iceland and the Faeroes .................................written on by every generation o f mineralogists. Iceland and the Faeroes have pro duced huge amounts o... An atypically sunny day near Helgusta5anama, Iceland; Holmatindur (Holma Peak) near ReySarfjorSur is...January-February, 1981 5 INTRODUCTION In the region of the North Atlantic, vast areas of the land and...Province. These basalts, visible in eastern and western Greenland, Iceland, Jan Mayen, the Faeroes, Scotland | | | Journal (article/letter/editorial) | 26, 1974 / Accepted January 1, 1975 Abstract. Mordenite is a zeolite whose approximate composition is...the ratio Si/(Si + A1+ Fe'"). Introduction Mordenite is an orthorhombic zeolite; its unit cell content...(Callisen, 1917), arduinite (Billows, 1912) and mordenite are one and the same mineral. Meier (1961) determined...(1953). The chemical formula of each analysis of mordenite, ptilolite, flSkite, and arduinite reported in..."Conclusions", these diagrams indicate t h a t mordenite has a wide range of chemical composition, both | | | Journal (article/letter/editorial) | GROUP; CLINOPTILOTHE MORDENITE-PTILOLITE LITE, A NEW SPECIES War-onuan T. Scnelr,Bn, U. S. Geologi'calSuraey...formula to be lOSiOz.AlzOa'RO'7HrO. The analysesof mordenite, as given in the literature, show a very similar...extinction. Grouping all the availab.leanalyses of mordenite, ptilolite, and related minerals (flokite), as...(shown to be mordenite) with ptilolite, and Walker the identity of ptilolite with mordenite. By correlating...acid-insoluble, zeolite-resembling minerals : 1. Mordenite (How, 1864),9SiO,. AlzOr' (Ca, K2, Na) O ' 6HrO | | | Journal (article/letter/editorial) | Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavik, Iceland (Received October 30, 2000; accepted...compositions of stilbite SS in Tertiary metabasalts in Iceland and Icelandic geothermal systems change systematically...compositional-relations in metabasalts at Berufjördur, Iceland, measured temperatures of zeolite mineral distribution...of these minerals in low-grade metabasalts of Iceland, as well as the observed temperature of the stilbite...zeolite paragenesis in active geothermal systems in Iceland, were used to supplement calorimetric and phase | | | Journal (article/letter/editorial) | K. H. Scheumann:3 Heulandite from Berufiord, Iceland. 1Hdb. Mineralchemie, II, 3, (1921), p. l7l. 2...representing similarly selected analyses of epistilbite, mordenite and brewsterite, which are isomorphous with heulandite...crystal. Tschermaks has recently made it clear that mordenite anc epistilbite (as well as brewsterite) belong...orientation for epistilbite, so that the ratios become: Mordenite a:b:c:0.401: 1 :0.428 p:88o31, Heulanditea:b:c:0...Brewsteritea:b:c:0.405: | :O.420 169 P:89"20' P:86"20' Mordenite is so rare that only three satisfactory analyses | | | Journal (article/letter/editorial) | OCCURRENCE, CHEMICAL VARIATION AND GENESIS OF MORDENITE AND ASSOCIATED ZEOLITES FROM THE MORDEN AREA,...basalt show a succession of clinoptilolite-Na → mordenite → heulandite, clinoptilolite-Ca, or epistilbite...required for the precipitation of labradorite and mordenite, the repetitive zonation in some amygdales, and...as implied by previous authors. Formation of mordenite was favored by hydrothermal circulation of alkaline...of the Blomidon Formation. Keywords: zeolite, mordenite, North Mountain basalt, hydrothermal circulation | | Ottens, Berthold, Götze, Jens, Schuster, Ralf, Krenn, Kurt, Hauzenberger, Christoph, Zsolt, Benkó, Vennemann, Torsten (2019) Exceptional Multi Stage Mineralization of Secondary Minerals in Cavities of Flood Basalts from the Deccan Volcanic Province, India. Minerals, 9 (6) 351 doi:10.3390/min9060351 | Journal (article/letter/editorial) | assemblage of calcite (I) and zeolite (I) (including mordenite, heulandite, and stilbite) as well as plagioclase...basalt was undertaken for for the the basalts of Iceland [19]. Later on the basalts provinces. Most Mostbasic...was undertaken basalts of Iceland [19]. studies Later studies on the of Iceland [11], Greenland [20,21]...Scotland [23], and[23], Northern Ireland basalts of Iceland [11], Greenland Faroe Islands Isle of Skye, Scotland...Savda region is unknown. Neuhoff et al. [9] estimated for basaltic lavas at Teigarhorn, Eastern Iceland | | | Journal (article/letter/editorial) | stilbite and heulandite may contain more SiO2, and mordenite and ptilolite contain much more silica. To show...components (not end-members) of zeolites. relation to mordenite and ptilolite. On the same diagram are shown the...composition in gismondite, laumontite, heulandite, mordenite, and ptilolite. Laumontite and gismonditevary...relation between heulandite, mordenite and ptilolite; heulandite and mordenite seem to form a (discontinuous...A.: Mi'n. Abst., vol. 4, p. 320,1930. 46. Teigarhorn,Iceland. Cavinato, 4..: loc. cit. 47. Maderanertal | | | Journal (article/letter/editorial) | in Tertiary basaltic lavas in the North Atlantic region indicate that individual zeolite minerals are distributed...zeolite deposits, such as those in the North Atlantic region, are among the most common occurrences of these...epistilbite EPI (5-1) Ca, Na ~4 - ~6.15 mordenite MOR ~1.27 ~1- thomsonite (Na2,Ca) Al 2 Si...at 05:03 09 October 2014 lipsite, chabazite, mordenite, heulandite, clinoptilolite, and stilbite. Secondly...Data taken from Walker (1960b; Iceland basalts), this study (Iceland and East Greenland basalts), Schmidt | | | Journal (article/letter/editorial) | solved by the cross-linking of columns of the mordenite type, which have a 7"5 ~ repeat unit obtained...rectosilicates keatite, petalite, scapolite, and mordenite have one axial length of about 7.5 A and each...The crystals are from the type locality of Teigarhorn, Iceland. The crystals were chemically analysed by | | Neuhoff, Philip S., Rogers, Karyn L., Stannius, Lotte S., Bird, Dennis K., Pedersen, Asger K. (2006) Regional very low-grade metamorphism of basaltic lavas, Disko–Nuussuaq region, West Greenland. Lithos, 92 (1) 33-54 doi:10.1016/j.lithos.2006.03.028 | Journal (article/letter/editorial) | metamorphism of basaltic lavas, Disko–Nuussuaq region, West Greenland Philip S. Neuhoff a,⁎, Karyn L...tholeiitic lavas, occurring widely throughout Iceland (e.g., Walker, 1960b; Neuhoff et al., 1999), the...(Sukheswala et al., 1974) and the Blosseville Kyst region of East Greenland (e.g., Fawcett et al., 1966;...tholeiitic lavas hosting active geothermal systems in Iceland (Kristmannsdóttir and Tómasson, 1978). Compositional...equivalent metamorphic grades. A unique aspect of this region is the presence of reservoir-scale petroleum accumulations | | | Book | 6-Rings .............. The Frameworks of the Mordenite Group. . . . . The Frameworks of the Heulandite...2 5.3 5.4 5.5 Zeolites of the Mordenite Group ............ Mordenite. . . . . . . . . . . . . . . ....Epistilbite: Rose (1826) Faujasite: Damour (1842) Mordenite: How (1864) Offretite: Gonnard (1890) Gonnardite:... 4. Zeolites with 6-rings 5. Zeolites of the mordenite group 6. Zeolites of the heulandite group Different...Bennett (1981). 0.2.5 The Frameworks of the Mordenite Group To build these frameworks, one must start | | | Journal (issue) | email at roy.starkey@gmail.com 10 Zeolites (rom Iceland DavidHardman When I started collecting seriously...Svappavaara in North Sweden) and mesolite (from Iceland). However, the Greeks,Romansand Mayasknew about...be used to aid marine navigatior1_.;specimen of Iceland Spar from this locality was recovered from the...now little to see or collect. So treasure any Iceland Spar specimensyou may havefrom this locality! ...on the east coast and just to the south is the Teigarhorn area and the Berufjord, also classic zeolite | | | Journal (article/letter/editorial) | Science Institute, University of Iceland, Dunhaga 3, 107 Reykjavík, Iceland Reykjavík Energy, Baejarhálsi...Baejarhálsi 1, 110 Reykjavík, Iceland Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley CA 94720...and compared to observed basalt alteration in Iceland and Greenland. Overall simulated and observed alteration...Reykjavík Energy, Baejarhálsi 1, 110, Reykjavík, Iceland. Tel.: +354 516 6992; fax: +354 516 6709. E-mail...CO2 mineral sequestration. Natural analogs from Iceland and Greenland were used to identify primary and | | | Journal (article/letter/editorial) | Extraframework cations Chabazite High analcime–pollucite Mordenite Heulandite–clinoptilolite Gonnardite Offretite...framework O Examples include chabazite (Fig. 3), mordenite (Fig. 4), and the heulandite–clinoptilolite minerals...increasing grade in zeolite facies basalts in eastern Iceland (Neuhoff, unpublished data). Unfortunately...compositions of analcime in zeolite facies metabasalts in Iceland (Neuhoff, unpublished data) and the rightmost gray...of chabazite in zeolite facies metabasalts in Iceland (Neuhoff, unpublished data). P.S. Neuhoff, L | | | Book | LEVYNITE= LEVYNE 67 MAZZITE 70 MESOLITE 71 MORDENITE (PTILOLITE) 75 NATROLITE 78 OFFRETITE 84...Hilaire Bluff, Bay of Fundy ATLANTIC 1 I I ICELAND Berufjord, Fasrudsfjord EUROPE BRmSH ISLES IRELAND...sub-species Mordenite. De Michele in the World of Minerals, sub-species of Mordenite or the red fiberous...Collingwood, Richmond, Melbourne, Victoria ATLANTIC ICELAND Berufjord GREENLAND Faroe Island SOUTH AMERICA...NOVA SCOTIA In the Bay of Fundy Region, Annapolis Royal. ATLANTIC ICELAND Berugjord GREENLAND Faroe | | | Book | levyne, mazzite, merlinoite, montesommaite, mordenite, offretite, paulingite, perlialite, thomsonite...analcime, bikitaite, edingtonite, ferrierite, mordenite, natrolite, thomsonite, tschernichite, and wairakite...GMELINITE LEVYNE EPISTILBITE FAUJASlTE POLLUClTE MORDENITE OFFRETITE GONNARDITE WELLSlTE* ERIONITE DACHIARDITE...where it flows out of the system. . . . . mordenite are of major importance, with minor phillipsite...clinoptilolite) crystals (0.01 to 0.1 mOl long), mordenite, and phillipsite replacing 50 to 90 percent of | | | Book | levyne, mazzite, merlinoite, montesommaite, mordenite, offretite, paulingite, perlialite, thomsonite...analcime, bikitaite, edingtonite, ferrierite, mordenite, natrolite, thomsonite, tschernichite, and wairakite...GMELINITE LEVYNE EPISTILBITE FAUJASlTE POLLUClTE MORDENITE OFFRETITE GONNARDITE WELLSlTE* ERIONITE DACHIARDITE...where it flows out of the system. . . . . mordenite are of major importance, with minor phillipsite...clinoptilolite) crystals (0.01 to 0.1 mOl long), mordenite, and phillipsite replacing 50 to 90 percent of | | | Journal (article/letter/editorial) | Natural epistilbite from the type locality Teigarhorn, Iceland (Perrotta, 1967). Table 6. X-ray powder...a r a t i o n lower t h a n 0.1 ~ 2 0 are in a region ~n which t h e error of m e a s u r e m e n t is...zones with increasing depth characterized by mordenite, laumontite, and wairakite at Onikobe, Japan,...200 o c I00 o wairakii'e 9 laumontHe o mordenite 0 I J I00 200 Temperature 500 in ~ non-equilibrium...depths of formation of wairakite, laumontite and mordenite related to thermal springs. The temperature in | | | Journal (article/letter/editorial) | basalts of Salsette Island in the greater Mumbai region, as well as in other localities in the Deccan Volcanic...unique geological environment. The greater Mumbai region is built up by the Salsette subgroup, which represents...contrast, the basalts in the Mumbai (formerly Bombay) region erupted in a lagoonal to shallow marine environment...Amygdaloidal tholeiitic basalt occupies most of the eastern part of the island, whereas spilitic basalt with...in the high temperature hydrothermal fields in Iceland. The secondary minerals discussed here formed in | | | Journal (article/letter/editorial) | from other localities in the Balaton Highland, Iceland and Northern Ireland. K EY WORDS : miarolitic...1. Location and simplified geological map of the region around the Haláp volcano. Features are: (1) Upper...active (e.g. Iceland, Kristmannsdottir and Tomasson, 1978; Getaneh 2001; Surtsey, Iceland, Jakobsson and...250ºC (Senderov, 1988). In geothermal systems in Iceland, analcime crystallizes in the temperature range...1978). Data from geothermal wells in basalt in Iceland and the Faroe Islands show that natrolite, mesolite | | | Journal (article/letter/editorial) | Earth Sciences, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland a r t i c l e i n f o Article...quartz observed at b150 °C in the Disko–Nuussuaq region in W Greenland (Rogers et al., 2006), and the formation...basaltic rocks, such as being planned at Hellisheidi, Iceland (Matter et al., 2009, 2011; Gíslason et al., 2010;...spring water from Vellankatla, both collected in SW Iceland (Table 1). The basaltic glass was dry sieved to...interacted with altered basalts in the DiskoNuussuaq region, West Greenland. They found that upon CO2 input | | | Journal (article/letter/editorial) | Earth Sciences, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland Received 13 January 2011; accepted...similar to the glass from Stapafell (Southwest Iceland) used in our previous experiments (Gysi and Stefánsson...Vellankatla, Southwest Iceland, and precipitation from the Langjökull ice cap, Central Iceland. Two sets of reaction...Heulandite-Ca Stilbite-Ca Scolecite Natrolite Mesolite Mordenite-Ca Na0.96Al0.96Si2.04O61.02H2O + 4.98H2O = 0...based on the mineralogy from the Disko-Nuussuaq region (West Greenland) consisting of siderite–magnesite | | Sætre, C., Hellevang, H., Riu, L., Dypvik, H., Pilorget, C., Poulet, F., Werner, S. C. (2019) Experimental hydrothermal alteration of basaltic glass with relevance to Mars. Meteoritics & Planetary Science, 54 (2) 357-378 doi:10.1111/maps.13214 | Journal (article/letter/editorial) | A tholeiitic basaltic glass from Stapafell in Iceland was used in all the experiments. This glass is...due to their broad signature in the 1.0 to 2.5 lm region. A spectral ratio (altered sample/original basalt)...Quartz Chalcedony Zeolite Mesolite Scolecite Mordenite Analcime Phyllosilicate Ca-saponite Mg-saponite...and deep absorption feature centered in the 3 lm region (IIIa, Fig. 2E) attests to hydration of the analyzed...detections associated with carbonates were made in the region 3.2–4.0 lm, namely at 3.35, 3.48, and 3.98 lm (IIa | | | Journal (article/letter/editorial) | com/locate/chemgeo Geochemistry of CO2-rich waters in Iceland Dana L. Thomas a,⁎, Dennis K. Bird a, Stefán Arnórsson...Earth Sciences, University of Iceland, Sturlugata 7, 101 Reykjavík, Iceland a r t i c l e i n f o Article...in Iceland from volcanic systems of the Mid-Atlantic Ridge and off-rift volcanic areas of Iceland provide...from the Snæfellsnes Peninsula, within the South Iceland Seismic Zone and on the margin of the Torfajökull...and low and high-temperature geothermal fluids in Iceland. Our conceptual model for the evolution of thermal |
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