 | | Book | | (SALTMARSH AND ESTUARINE) RIVERTERRACE DEPOSITS HEAD DEPOSITS (PERCHED ANDVALLEY) RAISEDMARINEDEPOSITS...GeologicalSurvey. 1:50 000 Sheet 346 Newquay (England and Wales). © NERC 2014 All rights reserved Copyright...Generalised sequence of mineralisation in south-west England 14 5 Constituent mines of the Great Perran Iron...Porthtowan Formation 9 Sheeted veins with greisen borders, Cligga Head 12 Gravel Hill Mine at the western extremity... .li regurnan . Watergate Bay Drt -1, Towan Head 90 1 St Agnes Formation (Cenozoic) :J 380 |  | | Report (issue) | | 1·ecoanisable 0 Plate 4.-Bands of greisen in the Granite of Cligga Head - . - . - < Plate 5.. -Consolidated...Sheet 346 of the Geological Survey Map. It lies in Cornwall, and takes in an area of about 105 square miles...the north coast from Watergate Bay to St. Agnes Head. The only town of anjt size is Newquay; but there...Peat. RECENT Alluvium. - { Valley Gravel and '' Head." PLEISTOCENE Raised Beach . Sand and clay of St...NOTES ON FISH-REl\lAINS FROM WATERGATE BAY IN CORNWALL. . BY R. H. TRAQUAIR, M.D., LL.D., F.R.S. 1 |  | | Journal (article/letter/editorial) | | Indium mineralisation in SW England: Host parageneses and mineralogical relations Jens... Shail, Robin K., Indium mineralisation in SW England: Host parageneses and mineralogical relations,...Ore Geology Reviews Indium mineralisation in SW England: host parageneses AC CE P TE D and mineralogical...Cornubian batholith, SW England 1 ACCEPTED MANUSCRIPT ABSTRACT The SW England ore region contains significant...sulphide lodes and sulphidebearing portions of greisen-bordered sheeted vein systems and quartz-tourmaline |  | Dominy, S.C., Camm, G.S., Bussell, M.A., Scrivener, R.C., Halls, C. (1995) A review of tin stockwork mineralization in the south west England orefield. Proceedings of the Ussher Society, 8 (4) Ussher Society. | Journal (article/letter/editorial) | | TIN STOCKWORK MINERALIZATION IN THE SOUTH-WEST ENGLAND OREFIELD S.C. DOMINY, G.S. CAMM, M.A. BUSSELL ...tin stockwork mineralization in the south-west England orefield. Proceedings of the Ussher Society, 8...of mineralization encountered in the south-west England orefield less typical than the characteristic composite...Prince Consort Road, London SW7 2BP. INTRODUCTION Cornwall was formerly one of the world's greatest tin and...The earliest mention of stockworks in south-west England addressed the cassiterite-bearing Carclaze deposit |  | | Journal (article/letter/editorial) | | promontory between St. Agnes and Perranporth on the northern coast of Western Cornwall, has long been known, not...notes by Buckland, described a small formation at Cligga Point which would 'probably be considered by the...I n 1818, Joseph Carne 3 spoke of granite at Cligga Head, apparently stratified obliquely, but proving...footnote the same author wrote : - ' The granite at Cligga Poi~t (if it is not a large elvan-eourse) might...affecting the age of the granite of other parts of Cornwall, as it is far from the large granite-chain' (op |  | | Catalog/List | | WICK CARRUTH Copse Cottage Drakewalls Gunnislake Cornwall PL18 9EG Tel/Fax: Tavistock (01822) 832530 *...MAY/JUNE 1907 *1. AGARDITE. Wheal Carpenter, Hayle, Cornwall. Iron stained quartz matrix showing micro green...without matrix. 30x30x20ram. £20. 5. BARITE. Tronach Head, Portknockie, Grampian, Scotland, tabular xls to...30x20x10mm. £6. 6. BORNITE. Carn Brea Mine, Illogan, Cornwall. A dark chalcocite/chalcopyrite matrix with hundreds...£45. 8. BOURNONITE. Herodsfoot Mine, Lanreath, Cornwall. A fine small museum, specimen ex. Chicago Natural |  | | Journal (article/letter/editorial) | | associated with the Cornubian Batholith of southwest England: Direct dating of cassiterite by in situ LA-ICPMS...Abstract The Cornwall and Devon vein- and greisen-type copper and tin deposits of southwest England are spatially...Keywords Cornwall . Devon . Cornubian . Cassiterite . Tin . U–Pb . Geochronology . LA-ICPMS . England Introduction...tin and copper deposits of Cornwall and Devon, in the southwest of England, have been a valuable commodity...2016). The aforementioned geochronology studies in Cornwall and Devon focused on dating the granitic host |  | | Journal (issue) | | anglesite of exceptional size and quality for the UK. More recently the rare lead sulphite scotlandite...probably the finest alstonite outside the north of England with typical pyramidal crystals to 6mm. Nearby...week of "Cornish Allsorts" . SMLS FIELDTRIP TO CORNWALL 19th - 25th April 1998 Although our numbers fluctuated...interest in the social history and development of Cornwall in general and Newquay, where the guest house...the beginning with a tour down the west side of Cornwall visiting Lamorna Cove and Penberth Cove, passing |  | | Journal (article/letter/editorial) | | varlamoffte (partially hydrated stannic oxide) in Cornwall. By SIR ARTHUR RUSSELL, Bart. and E. A. VINCENT...occurring somewhat abundantly at both Cligga mine, Perranzabuloe, and at Bunny mine, St. Austell. From...3 Sure enough, on examination I found both the Cligga and Bunny minerals to contain a high proportion... Russell, On rashleighite, a new mineral from Cornwall, intermediate between turquoise and chalcosiderite...occurrence. Cligga mine (formerly a part of Perran Great St. George mine) Perranzabuloe, Cornwall. (Six-inch |  | | Report (edition) | | | Geologists’ Association Guide No. 19 West Cornwall by A. Hall BIRKBECK COLLEGE UNIVERSITY OF LONDON...meetings in London and, via Local Groups, throughout England and Wales, conducts field meetings and publishes... Geologists’ Association Guide No. 19 West Cornwall by A. Hall Second Edition Edited by J. T. Greensmith...REFERENCES ISBN 0-900717-57-2 West Cornwall INTRODUCTION Cornwall has long been one of the classic areas...is shown in Figure 1. The largest area in west Cornwall is occupied by Devonian sedimentary rocks which |  | | Journal (article/letter/editorial) | | Greisenisation in the Granite of Cligga Head, Cornwall by ANTHONY HALL Received 29 April 1970; taken...Elements (c) The Gradational Nature of the Granite-Greisen Transition 3. MINERALOGICAL CHANGES (a) Feldspars...page 209 212 212 215 218 221 221 223 THE CUGGA HEAD GRANITE AS AN EXAMPLE OF GREISENISATION REFERENCES...226 226 228 ABSTRACT: The central part of the Cligga Head granite is cut by numerous greisenbordered veins...brought about by postmagmatic alteration at Cligga Head are broadly similar to those observed in other |  | | Journal (article/letter/editorial) | | range of Sn-W sheeted vein systems from southwest England and Spain. The methods are based on fractal concepts...location and style of Sn-W mineralization observed. Greisen-dominated and disseminated Sn-W systems develop...methodology, we use two data sets from Cligga Head, Cornwall. Both are from greisenized granite; one...an essentially unmineralized system (Cligga 1), the other (Cligga 2) including veins with extensive Sn-W...and associated greisen alteration to be investigated. The methods developed for Cligga Head are then applied |  | | Journal (article/letter/editorial) | | le mine de Cligga, been discovered.Ferrokesterite occursin greisen-bordered d Perranzabuloe, en Cornouaille...(Angleterre). C'est un sulfide veins in granite from the Cligga mine, Perranmin€ral tdtragonal, qui crlstallise...crlstallise dansle groupe spatial,I4, zabuloe,Cornwall, England, The mineral is tetragopalwith Z:2: a 5.433, c...pas 6tablie, quoiqu'elle n'est nite, kesterite, Cornwall, New Brunswick, British pas exclue. Colurnbia...stannite. The mineral occursin the Cligga mine, Perranzabuloe, Cornwall, England. The material is preservedas |  | | Report (edition) | | meetings in London and, via Local Groups, throughout England and Wales. It conducts field meetings and publishes...Europe and has led many field trips to the coast of Cornwall. Front Cover: Old engine house, Botallack Mine...Alderton). Geologists Association Guide No. 31 WEST CORNWALL by A . Hall Third Edition Guide Series Editor;... List of Figures 1. O u t l i n e map of West Cornwall 2. Map of Land's End peninsula 5 3. Map of... 26 14. North-south cliff section through the Cligga stock 26 15. Map of Falmouth Bay 29 16. Map |  | | Journal (article/letter/editorial) | | a guide to fluid processes in the southwestern England orefield: An ion microprobe study M. P. SMITH Department...revised of Leeds, j&m Leeds December LS2 9JT. UK 29. 1995 ) Abstract-The boron isotopic composition...from a series of sites in the western southwest England orefield has been determined using ion microprobe...in equilibrium with tourmalines from the Cligga Head greisen bordered vein system agrees closely with...isotopic zoning within the tourmalines from the Cligga Head hydrothermal veins suggests that phase separation |  | | Journal (article/letter/editorial) | | RYBACK 42 Bell Road, Sittingbourne, Kent ME10 4EB, England AND PETER C . T A N D Y Department of Mineralogy...British Museum (Natural History), London SW7 5BD, England T n E supplementary lists of British Isles minerals...has improved recently. The classic minerals of Cornwall and Devon are splendidly described by Embrey and...known from the British Isles, and 580 or so from England. Of these latter, about 116 are listed here as...secondary mineral at Gravel Hill mine, Perranzabuloe, Cornwall (C. Sparrow, pers. comm., 1991; XRD by |  | | Journal (article/letter/editorial) | | Geological Exploration in the St. Agnes Area, Cornwall by R. H. T. GARNETT Received 6 January 1961; read...sea-bed between St. Agnes Head and Cligga Head on the north coast of Cornwall was geologically explored...tin-copper mineralisation which is associated with the Cligga and St. Agnes Granites and has been extensively...results: between St. Agnes Head and Perranporth on the north coast of Cornwall. The amount of planning prior...which the diving operations were conducted. Cligga Head forms the eastern limit to the area, the western |  | | Report (edition) | | GEOLOGISTS' ASSOCIATION GUIDES Noo 19 West Cornwall by A. HALL ITINERARY Introduction I. Land's End...incorporation in any furtl,er edition. West Cornwall by A. HALL INTRODUCTION has long been one of...distribution of the major rock units is shown in Fig. 1. CORNWALL I••+·j Granite 3 D Devonian sediments filffm...10 20 kilometres Fig. I. Outline map of West Cornwall, showing the areas covered by the five itineraries...sedimentary rocks occupy the largest part of west Cornwall. The Devonian rocks are shales and sandstones |  | | Journal (article/letter/editorial) | | Petrogenesis of the Bosworgey Granitic Cusp in the SW England Tin Province and Its Implications for Ore Mineral...Nottingham, England 2 Institute of Geological Sciences, 64-78 Grays Inn Road, London, England Abstract....irregular Fig. 1. Simplified geological map of SW England showing positions of the granite plutons and cusps...CB=Cam Brea, CM=Carn Marth, C=Carmnenellis, Cl=Cligga Head, A = St. Austell ridge of granite and to confirm...muscovite (probably replacing biotite) and fine greisen mica aggregates forming at the expense of feldspars |  | | Journal (article/letter/editorial) | | quartz from St. Michael’s Mount and Cligga Head, Cornwall, England* ANDREWR. CAMPBELLand KURT S. PANTER...occurrence and Cligga Head deposit are typical examples of W-Sn mineralization in the Cornwall district in...in SW. England. Mineralization consists of quartz, wolframite, cassiterite, and various amounts of base...quartz and 4.2 eq. w-t% NaCl in wolframite. At Cligga Head, the average Th values for primary inclusions...same temperature at St. Michael’s Mount but at Cligga Head cassiterite was deposited at higher temperatures |  | | Report (chapter) | | Geological Sciences, University of Durham, Durham DH1 3LE, UK (e-mail." k.j.w.mccaffrey@durham.ac.uk) 2CEESR, School...Kingston upon Thames, Surrey KT1 2EE, UK 3present address. Shell UK Exploration and Production, 1 Altens...Altens Farm Road, Nigg, Aberdeen AB9 2H7, UK Abstract: Fractures are ubiquitous in crystalline rocks and control...fractures in the St A ustell, Bodmin and Cligga Head granites, Cornwall The Cornubian batholith was intruded...during the latest Variscan orogenic events in SW England (Willis-Richard & Jackson 1989). The batholith |  | | Journal (article/letter/editorial) | | IN THE PNEUMATOLYTIC LODE SYSTEMS OF SOUTH WEST ENGLAND C. HALLS, J. W. COSGROVE AND G. S. CAMM Halls,...pneumatolytic lode systems of south west England. Geoscience in south-west England, 10, 058-063 Cliffs, foreshore...foreshore and opencast mining operations in south west England provide outstanding exposures of mineral lodes...School of Mines, University of Exeter, Redruth, Cornwall, United Kingdom INTRODUCTION Swarms of parallel...granites. Observations of well-exposed systems in SW England are used to place constraints on the conditions |  | | Book | | GEOLOGY OF ,,, ,,. F .. THE GEOLOGY OF CORNWALL Cornwall is renowned for its spectacular rocky coastline...seventeenth century. This book reviews the importance of Cornwall in the development of geological thought in Britain...of notable scientific interest. The Geology of· Cornwall is a companion volume to The Geology of Devon...org/details/geologyofcornwal0000unse THE GEOLOGY OF CORNWALL AND THE ISLES OF SCILLY Edited by E.B. Selwood...Liskeard High: E.B. Se/wood The Structure of East Cornwall: K. P Isaac Culn1 Basin: JR. Andrews The Boscastle-Tintagel- |  | | Journal (article/letter/editorial) | | Metasomatism and the formation of greisen in Grainsgill, Cumbria, England 0. E. Roberts Department of Geology...Slate adjacent to the margin of the Grainsgill Greisen is described and chemical analyses of the various...liberated K and'Na from the granite to produce the greisen. This gave rise to K metasomatism of the adjacent...and that liberated during the formation of the greisen are probably the sources of the Na in the brines...setting The Grainsgill outcrop of granite and greisen is the northern of three surface manifestations |  | | Journal (article/letter/editorial) | | 106. September, 1924. Vol. XX. Topaz from Cornwall, with an account of its localities. By Arthur...hitherto been looked upon as comparatively rare in Cornwall. When massive, or even in the form of small, well-developed...of topaz as a microscopic accessory in granite, greisen, and rarely elvans, from most of the Cornish masses...mass, thus affording evidence that topaz is in Cornwall, as in the case of other countries, a comparatively...much of the topaz in granitic rocks, particularly greisen, is of secondary origin, having been formed along |
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