 | | Journal (article/letter/editorial) | | 187 Low-potash gismondine from Ireland and Iceland. By G. P. L. WALKER,Ph.D. With chemical analyses...the North Atlantic region, from a total of some 40 localities in Antrim and Iceland. It occupies a well-marked...lavas, and the characteristic associates are chabazite, thomsonite, and phillipsite. Five new chemical...the Tertiary volcanic rocks of the North Atlantic region. Specimens of a mineral collected in Northern Ireland...Whilst engaged in geological mapping in eastern Iceland in 1957-61 the writer collected gismondine from |  | | Journal (article/letter/editorial) | | for natural samples of the zeolites, analcime, chabazite, clinoptilolite, laumontite, mordenite, and natrolite...zeolites. High to intermediate 6180f values for five chabazite (20.6 to 25.8%), two soil clinoptilolites (31%)...sample site. In contrast, isotopic com~sition of chabazite, clinoDtilolite. laumontite. and mordenite channel...dehydration conditions for the zeolites analcime, chabazite, laumontite, and mordenite. Although a wealth...oxygen isotope ratios for dehydrated analcime, chabazite, clinopti~olite, laumontite, mordenite, and natrohte |  | | Journal (article/letter/editorial) | | 258 Garronite, a new zeolite, from Ireland and Iceland. By G. P. L. WALKER,Ph.D. With chemical analyses...in the Tertiary basalts of Antrim and eastern Iceland, and the name garronite is proposed. Four chemical...collected f r o m T e r t i a r y basalts in eastern Iceland, and during field work since t h e n t h e mineral...found at a f u r t h e r t w e n t y localities in Iceland and is locally quite a b u n d a n t . The mineral...found fairly abundantly in screes on the steep western slopes of the Glenariff valley, in eastern Antrim |  | | Journal (article/letter/editorial) | | Reydarfj6rdur: garronite and other zeolites (analcime, chabazite, gmelinite, heulandite, levyne, mesolite, natrolite...Bj61fur, Seydisfj6rdur; Efri-Hrittd, !~agridalur; Eyrarfjall, ReydarfjSrdur; Fanndalsd, Eskifj6rdur; Fossdalur...gyrolite, gismondine, and other zeo]ires (analcime, chabazite, heulandite, levyne, mesolite, thomsonite), 187...Head: garronite, and other zeolites (analcime, chabazite, gmelinite, heulandite, levyne, natrolite, phillipsite...Hill: gismondine and other zeolites (analcime, chabazite, garronite, levyne, mesolite, natrolite, phillipsite |  | | 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...These basalts, visible in eastern and western Greenland, Iceland, Jan Mayen, the Faeroes, Scotland and |  | | Book | | . ... . . ... . .. . .. . . .... . . . . .. Chabazite, Willhendersonite . . . . . . . . . . . . . ....the zeolite names with their present meaning Chabazite: Bosc d' Antic (1792) Stilbite: Haiiy (1801) Analcime:...Sequence AABBCC ... of parallel 6-rings R3m Chabazite R3m LEV Sequence AABCCABBC ... of parallel...the gmelinite cage (y-cage of Meier 1968) the chabazite cage the levyne cage the erionite cage the a-cage...cage. h - The gmelinite cage (y-cage). i-The chabazite cage. j - The levyne cage. k - The erionite cage |  | | Book | | the species name, zeolites such as analcime, chabazite, stilbite, and heulandite can be easily identified...indicated simply by the modifiers such as ordered chabazite rather than willhendersonite or disordered natrolite...priority) analcime (pollucite and wairakite), chabazite (herschelite and willhendersonile), gismondine...compositions, regardless of the crystal system. CHABAZITE GROUP Chabazite, herschelite, and willhendersonite represent...composition and disorder-order in the framework. Most chabazite crystals are calciumdominant, although potassium- | | | Book | | the species name, zeolites such as analcime, chabazite, stilbite, and heulandite can be easily identified...indicated simply by the modifiers such as ordered chabazite rather than willhendersonite or disordered natrolite...priority) analcime (pollucite and wairakite), chabazite (herschelite and willhendersonile), gismondine...compositions, regardless of the crystal system. CHABAZITE GROUP Chabazite, herschelite, and willhendersonite represent...composition and disorder-order in the framework. Most chabazite crystals are calciumdominant, although potassium- |  | | Book (volume) | | THE WESTERN NORTH ATLANTIC REGION The Geology of North America The Western North Atlantic Region...Atlantic Ocean basin. All are lithofacies in the western Drilling Project. number (with hole number, ...represent the oldest strata cored to date in the western North Atlantic basin. Formation, lower continental...recrystallized nannofossil calcite. Hatteras Formation, western 4. Bermuda Rise. Upper Hauterivian-Barremian...photographic artifact. Bermuda Rise Formation, western Bermuda Rise. Lower Eocene radiolarian mudstone |
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