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| soda-amphibole riebeckite have been recognized in Great Britain, of which that of Ailsa Craig is the best...best known. The occurrences of Ailsa Craig1 and Mynydd Mawr, Carnarvonshire,2 are riebeckitemicrogranites...paisanites. They contain ragged moss-like areas of riebeckite, together with microphenocrysts of quartz and...microcrystalline groundmass of quartz and felspar. Riebeckite was also found by Dr. Teall in the granophyre...Druim an Eidhne, Skye.3 Harker described the riebeckite in these rocks as occurring in two forms, one |
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| Library on May 9, 2015 ON THE CRYSTALLINE FORMS OF RIEBECKITE. 265 X X X I X . — O n the Crystalline Forms...petrographer in Scotland, sent me sections of the red and grey varieties of the microgranite of Ailsa Craig, then...under the microscope in any respect as did the Ailsa mineral, I had to report that I could not range...occur very abundantly in the interesting rock of Ailsa Craig, for opportunities of .studying which I am indebted...satisfactory optical grounds that the mineral of Ailsa Craig was Biebeckite, and its identity with Sauer's |
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| Micro-granite containing Riebeekite f r o m Ailsa Craig. By J. J. H. TSALL, M.A., F.R.S., F.G.S. (By...record the occurrence of riebeckite in the so-called syenite of Ailsa Craig, the small island which stands...Geological Survey (Explanation of Sheet 7, page 12):-"Ailsa Craig is an oval-shaped island, lying ten miles west...eastern declivity of the island and the waves. The Craig consists of a gray fine-grained syenite, which,...which rise through the Silurian strata of the south of Ayrshire. Dykes of dolerite run in a north-westerly |
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| British •L*- Dinosaur, Francis Nopcsa, 193. Ailsa Craig, Riebeckite Granophyre of, Ashley G. Lowndes, 268....Zones, Pabay, L. F. Spath, 6. Analcite Rocks of Scotland, G. W. Tyrrell, 249. Andree, K., Geologie in Tabellen...BAILEY, The Islay Succession, 286. Bauxitie Clay, Ayrshire, G. V. Wilson, 137. Becke, F., Gneiss of the High...Leeuwfontein, S. J. Shand, 379. Igneous Rocks of Scotland, G. W. Tyrrell, 249. Inselberge, J. W. Gregory...133. Index. Lowndes, Ashley G., Riebeckite Granophyre of Ailsa Craig, 268. ACALISTER, R. A. S., European |
 | Macdonald, R., Baginski, B., Dzierzanowski, P., Fettes, D. J., Upton, B. G. J. (2013) CHEVKINITE-GROUP MINERALS IN UK PALAEOGENE GRANITES: UNDERESTIMATED REE-BEARING ACCESSORY PHASES. The Canadian Mineralogist, 51 (2) 333-347 doi:10.3749/canmin.51.2.333 | Journal (article/letter/editorial) |
| 3749/canmin.51.2.333 CHEVKINITE-GROUP MINERALS IN UK PALAEOGENE GRANITES: UNDERESTIMATED REE-BEARING ACCESSORY...Murchison House, West Mains Road, Edinburgh EH9 3LA, UK Brian G.J. UPTON School of Geosciences, Grant Institute...Institute, University of Edinburgh, Edinburgh EH9 3JW, UK Abstract Chevkinite-group minerals were sought in...granitic bodies from the Palaeogene sequences of Scotland and Northern Ireland, ranging from biotite ± amphibole...compositions. Keywords: chevkinite-group minerals, UK Palaeogene granites, zoning patterns, textural analysis |
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| online April 2013 Apatite-supergroup minerals in UK Palaeogene granites: composition and relationship...Centre, Lancaster University, Lancaster LA1 4YQ, UK *Corresponding author, e-mail: r.macdonald@lancaster...macdonald@lancaster.ac.uk Abstract: The Palaeogene granites of Scotland and Northern Ireland range mineralogically from...amphibole – through fayalite-hedenbergite– to riebeckite-bearing types and compositionally from metaluminous...As part of an ongoing study of accessory phases in UK Palaeogene granites (Macdonald et al., 2013), we |
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| BARRON, A.R.C.S. INTRODUCTION. T HE mineral riebeckite was first discovered by Professor T. G. Bonney1...he placed it among the amphiboles, naming it riebeckite. In the same year Rosenbusch4 found a peculiar...rock independently, referred the blue mineral to riebeckite. The following year two other localities were...occurrence of riebeokite in a micro-granite from Ailsa Craig. The following year it was described in a granitite...Southern Sikkim, India, by Mr. T. H. Holland.5 Riebeckite has also been described by Professor Grenville |
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| groups. Appendix 3: Minerals discovered first in Scotland 5 5 6 7 9 10 11 11 12 13 39 44 47 SYNOPSIS...groups; and minerals which were discovered first in Scotland. Some 15 per cent of the species listed in this...knowledge as to which mineral species occur in Scotland, but that there is also a need for greater precision...to find the first recordings of minerals new to Scotland since 1901. Many authors have been unaware that...described had not been recorded previously for Scotland or the United Kingdom. The main criteria for accepting |
 | Tyrrell, G.W., Begg, J.L., Pringle, J., Weir, J., Henderson, S.M.K., Lamont, A. (1933) Summer Field Meeting, 1932; Girvan-Ballantrae. Proceedings of the Geologists' Association, 44 (1) 57 doi:10.1016/s0016-7878(33)80025-3 | Journal (article/letter/editorial) |
| recognised the close affinities which exist between the Ayrshire rocks and the serpentine, gabbro, and other basic...Silurian conglomerates of Corsewall P oint and Craig Skelly, and in the great Benan Conglomerate of t...exist ence of a land ridge across the sout h of Scotland during Ordovician tim es was of importance t o...took place. This sudden inrush of species from the south undoubtedly indicates the removal of a barrier;... with the spilites and albite-dolerites of South Ayrshire, belonged to the same general period of igneous |
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| 99 Riebeckite in Trachytic Rocks f r o m Abyssinia. By G. T. t)moR, M.A., F.G.S., Assistant in the...since Sauer 1 first described under the name of riebeckite a new species of blue hornblende in the granite...Mawr, ~ N. Wales ; in the " microgranite " of Ailsa Craig, 3 F i r t h of Clyde; in glacial deposits from...granite from Southern Sikkim. TM I 1 , Ueber Riebeckite, ein neues Glied der Hornblendegruppe." Zdts...note is to place on record a new occurrence of riebeckite in trachytic rocks from Abyssinia. The specimens |
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| 268 The Riebeckite Granophyre of Ailsa Craig. The Riebeckite Granophyre of Ailsa Craig. By ASHLEY G...included among others the famous riebeckite-granite or granophyre of Ailsa Craig. The analysis was as follows |
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| exhibited a specimen of Crocidolite from Orange River, South Africa. Mr. ROBERT DUNLOP exhibited specimens of...Barium Sulphide and of Lead Crystals from Leadhills, South Lanarkshire, and made some remarks upon their occurrence...Ostracoda found in the strata of W e s t e r n Scotland, w i t h a R e v i s e d List of Genera and Species...o t h e Ardrossan station of t h e Glasgow and South-Western Railway. The paper w a s illustrated b y...Lower Limestone Shales of the Muirkirk district in Ayrshire, w i t h a list of t h e Genera and Species found |
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| quarter-inch maps of the ^ Geological Survey of Scotland are a group of four masses of igneous rock marked...foothills of the Lammermuir range, and overlook to the south the fertile valley known as the Merse of Berwickshire...north-east corner of Sheet 25, and partly in the south-east corner of Sheet 33 of the Geological Survey...have only a very slight dip, up to 5°, to the south, or south-east at parts. No actual contracts of the igneous...the weather. The rock from the quarries to the south has a flinty appearance, and sometimes a fluxion |
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| OF GREAT BRITAIN VOL. XXXII THE GRANITES <_)F SCOTLAND by J. G. C. ANDERSON, M.A., Ph.D. with ,a contribution...939 Price 2s. 6d. net PLATE l. GRANITES OF SCOTLAND (AJem. Geol. Surv.) A.- RUBISLAW QU ,\RRY, ABERL>EE:-1...Divisional Inspector of i\1ines and Quarries, Scotland, for help in compiling the list of working quarries...EOLOGI CA L Sl:RVEY EXHIBITION O F liTCF,, ROAD, SOUTH KENSINGTON, Lo~no~, S .vV.7. 24th July, 1939. ...Pitsligo, 36. Various, 3G References, 37. o:i;, THE SOUTH-WEST • Loch Doon and Cairnsmore of Carsphairn, 38 |
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| and that part of the county which lies to the south-west of a line drawn from Aberporth on the coast...The coast of Cardiganshire sweeps in a curve from south-west to north-east for nearly 50 miles, so that...east of Gwbert in the south. (See Fig. 1.) It is known that the drifts in the south of the county are the...which originated " in the Caermarthenshire hills of South Wales, where the Upper Palaeozoic pebbles were obtained...Borth. 1. The Teifi Estuary.—From a little distance south of Gwbert to a point on the east side of the estuary |
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| translate and present to the Geological Society of South Africa a valuable paper 1 by Dr. Werner Beetz, in...author describes a great depression in the Namib (South-West Africa) due to the foundering of a segment...Trough Valley in the Namib," Trans. Geol. Soc. South Africa, 1924, p. 1. 286 Obituary—Grenville A...products, are well known. His description of the riebeckite-rock of Mynydd Mawr was an important contribution...clearly discriminated between that rock and the riebeckite-eurite so widely distributed as erratics along |
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| of these of a fine-grained granite containing riebeckite, from t h e Isle of Man, and one from Moel Tryfaen...Tryfaen, resemble in character t h e riebeckite rock of Ailsa Craig rather than that of M y n y d d Mawr...Sea, and m u s t have risen 2 5 0 feet between Ailsa Craig and Moel Tryfaen. Mr. DUGALD BELL then read a...moraines which he had met w i t h in t h e W e s t of Scotland. [See page 3 4 5 ] . T h e paper w a s illustrated...appreciated b y t h e various educational societies in Scotland. Two years ago he was invited to become t h e |
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| 268 The Riebeckite Granophyre of Ailsa Craig. The Riebeckite Granophyre of Ailsa Craig. By ASHLEY G...included among others the famous riebeckite-granite or granophyre of Ailsa Craig. The analysis was as follows |
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| facts that geographically the region lies further south, and that it does not present such a great elevation...whole of South Wales to the Bristol Channel, but with its southern edge extending no further south than is...ice—the northern ice apparently extending no further south off the Welsh coast than the Lleyn promontory. The...of a simple character and, as in other parts of South Wales, is of local oriuin. It consists of fragments...coast are said to run usually from north-west to south-east. He adds : " But it is clear that very many |
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| facts that geographically the region lies further south, and that it does not present such a great elevation...whole of South Wales to the Bristol Channel, but with its southern edge extending no further south than is...ice—the northern ice apparently extending no further south off the Welsh coast than the Lleyn promontory. The...of a simple character and, as in other parts of South Wales, is of local oriuin. It consists of fragments...coast are said to run usually from north-west to south-east. He adds : " But it is clear that very many |
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| in the Meall Damh Area C. The Teschenite Boss of South Rona . . . 375 376 376 376 378 378 385 386 386...varies from 3 miles near Osgaig to a J mile just south of Arnish or at An Caol. The total surface area...feet, stretching from Screapadal on the east in a south-westerly direction to north of Holoman. In the north...unconformably along a boundary from Brochel to the south of Loch Arnish. The southernmost of these three...divisions of the island are quite different from the south. In traversing the Torridonian region one passes |
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| 72 F.G. Phillips— Note on a Riebeckite-Bearing Rock from the Shetlands. By F. COLES PHILLIPS, B.A....occurrence of •*- the soda-bearing amphibole, riebeckite, in a particular type of dyke-rock in the Shetland...; later basic dykes. The granophyres bearing riebeckite, with which this note is concerned, occur as...differs from more normal granites occurring to the south in the extreme scarcity of any dark minerals. The...the reddish hand-specimens recalls that of A Riebeckite-rock from the Shetlands. 73 a typical nordmarkite |
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| Carnarvonshire. This part of the country stretches south-westwards as the broad promontory of Lleyn between...Antrim chalk, often very slightly abraded. . . . The south-western termination of this promontory affords several...Snowdonia, and has a breadth of about 5 miles. South-westwards the breadth varies from 3 to 5 miles,...coast is followed south-westward to the end of Lleyn and thence eastwards on the south side of the promontory...promontory to Criccieth. From Dinas Dinlle south-westwards as far as Gwydir Bay the coast-line is for the |
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| ':'~rZ~-52 24r Mull Ardnamurchan Arran and Ailsa Craig Skye 52 54 I l5 4 25; ...:. :.'. -,. ..-...intrusions in the same N period. Arran and Ailsa Craig Ireland The igneous succession of Arran is...small island of Ailsa Craig, to the S of Arran and consisting of a mass of riebeckite microgranite cut...Activity in Ireland differed somewhat from that in Scotland, for neither the very extensive Antrim lavas nor...Northern Skye. Memoir of the Geological Survey of Scotland. HMSO, Edinburgh. BAILEY, E., CLOUGH, C. T., WRIGHT |
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| this tends to correspond to the appearance of riebeckite. In contrast Sr and Nb can both be high in under-saturated...biotite-granites formed at a later stage; albite-riebeckite-granites represent the ultimate stage, as pegmatites...limited. However, Na-amphibole-granites (including riebeckite-granites) arerepresentedin S. Greenland and in...(over 700 p.p.m. Nb) and a handful of ~lbite-riebeckite-ignites (250 to 1400 p.p.m. Nb) contain more...ratio in different Nigerian granites; in albite-riebeckite-granite from Liruei NbjTa is 14. Additional features |
