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| carbonatite (Iron Hill, Colorado, USA); along a diabase-chalk contact (Scawt Hill, Ireland); in zeolitized...zeolitized plagioclase-rich gneiss, amphibolite, and basalt xenoliths (Letseng-La-Terai kimberlite, Lesotho);...On Iron Hill and in Cebolla Creek, near Powderhorn, Gunnison Co., Colorado, USA. From Scawt Hill, near...near Larne, Co. Antrim, Ireland. In the Gardiner complex, beyond the head of Kangerdlugssuaq Fjord, Greenland...and later alterations of the uncompahgrite of Iron Hill, Colorado. Amer. Mineral., 17, 343{356. (3) Kruger |
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| (1948).The minerals were found in a contact zone in Larne, IreIand and given the names larnite and bredigite...radiophyllite, diopside, melilite, serpentine and plagioclase. King (1962) published a measuredreaction of...Tertiary dolerite at Scawt Hill, Co. Antrim, Ireland. Tilley named the mineral after Larne, which is near the...(1948)describedanother form (a') of CarSiO+from Scawt Hill which they designatedas bredigite after Bredig...(1952) a: | .7 13 B:1.7t7 I - r ' Scawt Hill, County Antrim t " 4 (+) 2V 30' (Tilley and Vincent |
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| This seems the nearest case to the alteration in co. Antrim I am about to describe. As most geologists know... altered chalk at Scawt Hill, an old volcanic neck, about 6 miles north of Larne, came upon a dyke traversing...traversing the ' neck' dolerite of the hill and cutting across a narrow band of chalk. The geological...district is that common to the basaltic plateau of Antrim, and consists of the basic lava-flows covering...variety of Ireland. Of this hill the Irish Survey Memoir to Sheet 20 states that " at Slieve Scawt the Chalk |
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| XXll. The dolerite-chal]c contact of Scawt Hill, Co. Antrim. The production of basic alkali-roclcs... Field Occurrence. Scawt Hill, situated six miles n o r t h of Larne, Co. Antrim, forms a prominent height...edge of the Antrim 'plateau basalt' lavas. The geological structure of this portion of Antrim is comparatively...chalk and older Mesozoic rocks is covered by the Antrim Tertiary basalts, which are divisible into a lower...of bauxitic and pisolitic iron-ore deposits. Scawt Hill itself forms a mass of olivine-dolerite breaking |
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| XIV.—The Tertiary Dolerite Plugs of North-East Ireland—A Survey of their Geology and Geochemistry.* By...associated with the Tertiary lava plateau of north-east Ireland. All but two of the plugs are composed of olivinedolerite...INTRODUCTION igneous activity in the north-east of Ireland was both widespread and varied in nature. An extensive...in north Antrim these are of olivine-free or olivine-poor tholeiitic basalt, and in mid-Antrim of rhyolite...12 13 14 15 16 17 18 19 20 21 22 23 24 County Antrim Brockley, Rathlin Island Bendoo, S.E. of Ballintoy |
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| texture. The only other minerals present are rare plagioclase (An66) phenocrysts, minute (0.01 mm. diameter)...Minnesota; Lab. No. R2214). sio: AlzOs Fe:Os FeO Mso CaO CO: HrO+ HrOP:Ou Tio, MnO (1) (2) 1 7. 4 8 3. 0 1...interesting to note that the original larnite from Larne is grey from the presenceof finely divided spinel...R2216) Weight per cent SiOz AlzOs FezOe FeO Mso CaO CO, HzO* HrONuro KrO Tio, PrOu MnO BaO SOs 3 0 .8 9...discovery at scawt Hill, it has been found in a dolerite-chalk contact at Ballycraigy, also in the Larne district |
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| its enclosed mineral-filled cavities at Scawt Hill, Co. Antrim D. E. KITCHEN Department of Environmental... University of Ulster, Jordanstown, Co. Antrim, Northern Ireland BT37 0QB A B S T R A C T. P a r t i... which have been completely melted formed at Scawt Hill adjacent to a Tertiary dolerite plug. Melting...oxide and Mg-hercynite in a microcrystalline plagioclase matrix. An original mineral assemblage of zeolite...now containing complexly zoned pyroxenes with plagioclase and opaque oxide. Melting commenced between 700 |
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| dolerite and Chalk at the intrusion of Scawt Hill, Co. Antrim, Ireland. The melilite occurs both in the hybrid...melilite of the hybrid rock. The dolerite of Scawt Hill is a normal ophitic type built up essentially...100-00 99-86 100-51 100-34 1. Humboldtilite, Scawt Hill, Co. Antrim. Analyst, Dr. H. F. Harwood. la. Analysis...akermanite, and pseudo-sarcolite, the melilite of Scawt Hill corresponds (see Formula A) quite closely to...akermanite. composition of melilite (humboldtilite) of Scawt Hill. 1 = melilite is graphically plotted together |
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| The Geology of North-East Ireland account of the geology of North-East Ireland, which lies within the region...quarter-inch Sheets 2 and 5 of the Geological Survey of Ireland, contributions have been made by C. H. Emeleus...Charlesworth has written the remaining sections and co-ordinated the whole. TO THIS COMPOSITE 1. INTRODUCTION...rocks of the Highland Border Ridge of north-east Antrim (and their western continuation in the Sperrin...and Castlereagh Hills. 2. DALRADIAN ROCKS OF CO. ANTRIM Schistose rocks underlie about seventy square |
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| 1 GEOLOGICAL SURVEY OF NORTHERN IRELAND Geology of the country around Carrickfergus and Bangor Blacl<...the younger strata and volcanic rocks of County Antrim to the north. Although the area has been dealt...extension of the Southern Uplands Fault into Northern Ireland is discussed in the chapter dealing with geophysical...finding buried coal and hydrocarbons in south-east Antrim are also considered. In order to keep the price...[>JI 376] Frontispiece GEOLOGICAL SURVEY OF NORTHERN IRELAND Department of Economic Development A. E. |
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| Manual of the Mineralogy of Great Britain and Ireland (1858). These lists were published in the Reports...Somerset; 1 from Cheshire; 2 from Scotland; and 2 from Ireland). Geographical distribution of the minerals: of...England (75 of which are from Cornwall); 28 from Ireland; and 10 from Wales. (The remaining 12 minerals...(48 from Cornwall); 35 from Scotland; 19 from Ireland; and 7 from Wales. The remaining 5 are simply British...example, for SW England, Pennines and northern England, Wales, Ireland, Scotland, etc. When this has been |
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| groundmass of irregular and often somewhat cloudy plagioclase,with a compositionlas determined by meas_ urement...(and to a less extent NazO) liberated from the plagioclase was partly responsiblefor the increasein the...been recorded from the contact zone at Scawt Hill, Northern Ireland (5), which has some points of resemblanceto...spurrite-larnite-merwinite-gehlenite assemblage of Scawt HilI and what Tilley refers to as the more normal... Merwinite has been previously recorded from Scawt Hill (8)' Crestmore, California (9), and Velardefla |
 | SABINE, P. A., BECKINSALE, R. D., EVANS, J. A., WALSH, J. N. (1982) Geochemical and Strontium-Isotope Studies of Reactions between Basic Magma, Chalk, and Flint, and the Role of Groundwater, in the Carneal Plug, Co. Antrim, Northern Ireland. Journal of Petrology, 23 (3) 427-446 doi:10.1093/petrology/23.3.427 | Journal (article/letter/editorial) |
| of Groundwater, in the Carneal Plug, Co. Antrim, Northern Ireland institute of Geological Sciences, Exhibition...March 1982) ABSTRACT The Carneal plug, Co. Antrim, Northern Ireland, is a Tertiary dolerite intrusion, 150...Tertiary basaltic lavas at Carneal, Co. Antrim, Northern Ireland, incorporates blocks of the underlying...Carrickfergus Sheet 29, Geological Survey of Northern Ireland). The position of the Carneal phig is indicated...which the Carneal plug is intruded comprise the Antrim Lava Series. Downloaded from http://petrology |
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| 569 Wollastonite solid solutions from Scawt Hill, Co. Antrim. By C. E. TILLEY, Ph.D., B.Sc. Professor... [Read June 24. 1937.] OLLASTONITE at Scawt Hill, Co. Antrim, ocours as a conW stituent of both the...normal to the axis ft. Crystallographically these Scawt Hill wollastonites agree with the normal wollastonite... This s t a t e m e n t applies both to the plagioclase and the pyroxene. In the latter, the zones are...comparable with the highest obtained from the Scawt Hill wollastonites contains a p p r o x i m a t e |
 | Katona, I., Pascal, M.-L., Fonteilles, M., Verkaeren, J. (2003) THE MELILITE (Gh50) SKARNS OF ORAVITA, BANAT, ROMANIA: TRANSITION TO GEHLENITE (Gh85) AND TO VESUVIANITE. The Canadian Mineralogist, 41 (5) 1255-1270 doi:10.2113/gscanmin.41.5.1255 | Journal (article/letter/editorial) |
| larnite), such as Scawt Hill (Tilley 1929, Tilley & Harwood 1931) and Carneal, Ireland (Sabine 1975, Sabine...One such case is that of dolerite contacts at Scawt Hill, where a melilite also occurs, with a different...seems reasonable to ask whether the gehlenite at Scawt Hill could be metasomatically derived from such melilite...consists of a fine-grained association of calcic plagioclase and clinopyroxene, with minor titanite, and typically...fine-grained granditic garnet appears in these plagioclase–clinopyroxene hornfelses, leading up to the complete |
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| Caledonian granite by Tertiary basalt at Barnesmore, Co. Donegal D. E. K I T C H E N Department of Environmental...University of Ulster, Jordanstown, Co. Antrim, BT37 OQB, Northern Ireland, U.K. (Received 5 July 1988; accepted...intensifies within a Caledonian granite at Barnesmore, Co. Donegal. Rapid heating along the contact of one...Kitchen (1984) in melted Devonian tuffs from Co. Antrim. http://journals.cambridge.org Downloaded:...from core to rim, and span the range from sodic plagioclase (also the composition of relic feldspar phenocrysts) |
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| Some Observations on the Antrim Basalts and Associated Dolerite Intrusions by G. P. L. WALKER Received...basalt lavas and minor intrusions of north-eastern Ireland. Individual lava flows are found to average twenty-two...mineral new to Ireland. Composite lava flows are recorded for the first time in Ireland. Several examples...some 1500square miles in Antrim and adjacent counties in the north-east of Ireland. Excellent accounts of...of the general characters of the Antrim Basalts are given by Geikie (1897)and Charlesworth (1935),and |
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| LIBRARY j s i~sc_::. HISTORICAL GEOLOGY OF' IRELAND Digitized by the Internet Archive in 2023 with...org/details/historicalgeolog0000jkch HISTORICAL GEOLOGY OF IRELAND BY J. K. CHARLESWORTH C. B.E., D .Sc., PH.D....been attempted for Ireland since Cole and Hallissy's Handbook of the Geology of Ireland of 1924: the author's...author's Geology of Ireland: An Introduction ( r 953) had in mind the elementary student or the general...improve our knowledge of the various systems in Ireland. Many problems, however, await their final solution |
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| MINERALOGICAL SOCIETY OF GREAT BRITAIN AND IRELAND MINERALOGICALSOCIETY,January 25. SIR THOMASH....new mineral hydrocalumite from Scawt Hill, County Antrim, Northern Ireland, and MR. A. T. DOLLARexhibited...The paper describes various types of zoning in plagioclase feldspar in the calciferous sandstone basalt...tendency towards either more calcic or more sodic plagioclase. Distinction is drawn between the main zones...the surrounding magma. Recurrence of calcic plagioclase in the inner part of main zones is eXplained |
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| new mineral hydrocalumite from Scawt Hill, County Antrim, Northern Ireland, and Mr. A. T. Dollar exhibited...Zoning in plagioclase feldspar. The paper describes various types of zoning in plagioclase feldspar in...tendency towards either more calcic or more sodic plagioclase. Distinction is drawn between the main zones...the surrounding magma. Recurrence of calcic plagioclase in the inner part of main zones is explained |
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| at Mineral Hill in Delaware County. W. H. Flacx, MINERALOGICAL SOCIETY OF GREAT AND IRELAND Secretary...nv: Portlandite, a nezu minerd Jrom Scaul Hi.lt,Co. Antrim. A brucite-like mineral occurring in isolated...spurriteJarnite assemblage in the chalk-dolerite contact of Scawt Hill. This proves on analysis to be Ca(OH)2. This...to occur in certain aplitic dikes in the Broken Hill district, New South wales. This feldspar shows several...varying ftom74o-82" and an average value of plagioclase twinning with (-)2V 'v-d:-014. Dispersion 78" |
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| Geology around the University Towns: North-East Ireland-The Belfast Area by J. K. CHARLESWORTH and J. PRESTON...Gullion and its Ring-Dyke IV. Antrim Coast Road: Belfast to Ballycas1le V. Antrim CoasL: Murlough Bay-Portrush-Belfast...1958 PRICE; THREE SHILLINGS . .• North-East Ireland: the Belfast Area b�· J. k. CHARLESWORTH and J...a short early morning sailing from Stranraer to Larne, or in su111111er by daylight sailings from Stranraer...SURROUNDINGS (Fig. 1) Proceed up the Cave Hill Road of Belfast into the Cave Hill Quarry where the Chalk (underlain |
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| district, clinopyroxene compositions, 591; North End Hill synclinorium, low-grade metamorphic rocks, 357;...Basalt, dissolution of olivine, plagioclase, and quartz, 683; Northern Ireland, partial melting, 655 Basaltic...C., see DE BRtaYN, H., 145 Bonchevite, 135 Boron, co-ordination in sillimanite, 132 Botallackite, crystal...transport, 289; north, Caledonian lamprophyres, 485; northern Pennine orefield, strontianite, 762; Upper Teesdale...GASKARTH,J. W., see MACDONALD,R., 485 Gehlenite, Northern Ireland, 665 GILKES, R. J., see ANAND,R. R., 141 GILLARD |
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| Intrusion is a layered mafic pluton located on the northern coast of Labrador. The intrusion has been described...46 mm). (f) Rounded blebs of clinopyroxene in plagioclase in host rock adjacent to pyroxenite reaction...small blebs of clinopyroxene are included within plagioclase (Fig. 2f). Pyroxene is not a cumulus phase at...magma includes the presence of highly calcic plagioclase, approaching An100 in some grains, immediately...adjacent to the reaction zones (Owens 1986). Plagioclase compositions decrease to more typical Lower Zone |
 | Pascal, M.-L., Katona, I., Fonteilles, M., Verkaeren, J. (2005) RELICS OF HIGH-TEMPERATURE CLINOPYROXENE ON THE JOIN Di CaTs WITH UP TO 72 mol.% Ca(Al,Fe3+)AlSiO6 IN THE SKARNS OF CICLOVA AND MAGUREAUA VATEI, CARPATHIANS, ROMANIA. The Canadian Mineralogist, 43 (3) 857-881 doi:10.2113/gscanmin.43.3.857 | Journal (article/letter/editorial) |
| small outcrops of gehlenite-bearing rocks, at Cornet Hill and at Upper Cerboaia Valley (Fig. 2), first reported...of spurrite – tilleyite – wollastonite at Cornet Hill, and wollastonite – calcite – Ti-rich garnet in...association with anorthite as a modification of the plagioclase–augite association of the diorite at its margin...from the outcrop of gehlenite-rich skarn of Cornet Hill (Magureaua Vaţei complex), and three samples (VT54–55–56)...VT41 is composed of small elongate crystals of plagioclase showing a growth zonation (An60–40), clinopyroxene |
