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| No. 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...cursorily to be mistaken for quartz. The presence of topaz as a microscopic accessory in granite, greisen,...considerable mass, thus affording evidence that topaz is in Cornwall, as in the case of other countries, a comparatively...forms, seventeen in number, observed on Cornish topaz, the lettering and the indices being those adopted |
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| 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- |
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| of the PLIOCEI~'E DEPOSITS of the COU]~TY o f CORNWALL, and their BEA]IlI~G on the PLIOCENE GEOOI~APHY...366 u Plioeene Geography of the South-West of England. 367 IX. Summary and Conclusions ................petrography of the younger Tertiary deposits of Western Cornwall which, by reason of their mode of occurrence and...similarity to the well-known fossiliferous beds of St. Erth, have been generally assigned to the Pliocene...county, and are located at St. Agnes, 4 miles due south-west of Pen~nporth; at St. E r t h and Canons Town |
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| OF CORNWALL Edited by E.B. SELWOOD, E.M. DURRANCE and C.M. BRISTOW THE GEOLOGY OF CORNWALL Cornwall...seventeenth century. This book reviews the importance of Cornwall in the development of geological thought in Britain...rock and mineral exploitation. The Geology of Cornwall will be of interest to all those, whether amateur...of notable scientific interest. The Geology of Cornwall is a companion volume to The Geology of Devon...Press Reed Hall. Streatham Drive Exe1er. EX4 4QR UK Ii:) I998 University of Exeter Hardback ISBN O 85989 |
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| 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...Lode 18 7 Stratigraphy of the Beacon Cottage Farm. and St Agnes Beacon outliers 20 8 Sequential development...and Cenozoic deposits are present locally around St Agnes, in the west. The regional strike in the district... Watergate Bay Drt -1, Towan Head 90 1 St Agnes Formation (Cenozoic) :J 380 MawganPorth N |
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| Igneous Rocks of South-West England THE GEOLOGICAL CONSERVATION REVIEW SERIES The comparatively small...M. C. Gyopari S. Igneous Rocks of South-West England P. A. Floyd, C. S. Exley and M. T. Styles 6. ...D. R. Bridgland Igneous Rocks of South-West England P. A. Floyd Department of Geology, University of...study, or criticism or review, as permitted under the UK Copyright Designs and Patents Act, 1988, this publication...licences issued by the Copyright Licensing Agency in the UK, or in accordance with the terms of licences issued |
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| but deals mainly wit.h the mining area aro11nd St. Agnes, ,vhich has been carefully studied by Henwood...-East Wheal Rose. Cross sections Figs. 7 and 8.-Great St. George. Cross sections .. ··· 98 ., •· 99 � igs...Cross section .. ... • 102 .. • - 102 Fig. 13.-St. Agnes Consols. Cross section.. Figs. 14 and 15.-Wheal...-Sand-dune overwhelming meadows near Ellengl_aze, St. Cubert ... . • .. ... 1 • t• .• • TIIE GEOLOGY...Sheet 346 of the Geological Survey Map. It lies in Cornwall, and takes in an area of about 105 square miles |
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| experimental studies in determining the origin of topaz-quartztourmaline rock and tourmaline-quartz rock...tourmaline-quartz rock. Proc. Ussher Soc., 5, 121-127. Topaz-quartz-tourmaline rock and tourmaline--quartz rock...association with granitic rocks in south-west England and elsewhere. A brief review is given of available...from Cornwall (Roche Rock, Porth Ledden Beach and St Mewan Beacon) and Malaysia, and also for topaz-quartz... The melting experiments indicate that neither topaz-quartz-tourmaline rock nor tourmaline-quartz rock |
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| Twelveheads Press PO Box 59, Chacewater Truro, Cornwall TR4 8Z}. especially true of its minerals, some...clay workings have created a unique landscape around St Austell. Tin, copper, lead, zinc and other metals...rocks lie at the bottom of a sequence, but in Cornwall this becomes far from simple where rocks have...(metamorphism) of existing rocks. The land wl ‘ch is now Cornwall has seen periods of uplift and sinking beneath...conditions changed too, for the land that is now Cornwall was once close to the Equator before the action |
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| There have been !)lines in Cornwall for some 3500 years where the intrusion of huge masses of granitic...significant minerals to come out of southwest England. The accompanying captions describe the crystallographic...t). ~ e • ~t~' l lr\ V: 1 'I Minerals of Cornwall and Devon Joseon1ne Community Llbral1es Grants...Embrey. P. G. Minerals of Cornwall and Devon. 1. Mines and mineral resources;--England --Devon 2. Mines and...and n1ineral resources --England--1Cornwall J. Title IL Symes. R. F. 549.9423'5 QE262.D45 ISBN 0-56 5-009 |
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| 55 On the occurrence of Phenacite in Cornwall. By ARTHUR RUSS~.+.L. [Read June 7 and November 151 1910...localities in Cornwall. The occurrences are described in the order of their discovery. Cheesewrin9 Quarry, Zinidnlurrne...Zinidnlurrne, Cornwall. During the early part of 1905, while examining the Cheesewring Quarry, in company...locality, for although I have since visited the quarry, which is extensively worked, and made careful...spot at which the specimen was found was in the quarry amongst the d~bris on the east side. The association |
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| 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...lodes associated with D the Carnmenellis and St Agnes granites, which are the districts that had the |
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| Geoscience in south-west England SOME NOTABLE CORNISH BUILDING AND DECORATIVE STONES C.M. BRISTOW...and decorative stones. Geoscience in south-west England, 10, 000-000. Arising mainly from its exceptionally...exceptionally varied suites of intrusive igneous rocks, Cornwall has a rich variety of building and decorative...for medieval fonts and church carvings in North Cornwall. Polyphant Stone, formed by carbonatization of...calcium and magnesium carbonates and the Polyphant quarry was recently reopened to supply stone for the rebuilding |
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| superficial portions of the Gwithian/Hayle Beach of East Cornwall.” 34. *Dr. A. T. G. Dollar: “The seismicity of...“Supergene galena and pyrite from Wheal Hope, Cornwall.” 38. Dr. A. T. J. Dollar: “Petrological and chemical...“The structure of the Torbay regionthe Marldon Beacon nappe.” 44. *Mr. M. J. Ripley : “The geology of...of the Watergate Bay area, Newquay, Cornwall.” 45. *Mr. A. H. Stride: “North-east trending ridges of the...argon age determinations on slates from South-west England.” 51. *Dr. J. M. Thomas: “Sedimentation in the |
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| 180 THE PETROLOGY OF THE ST. AUSTELL GRANITE. By T. C. F. HALL, F.G.S. or Hensbarrow granite mass,...of the five large granite masses of the West of England, is, nevertheless, perhaps the most interesting...two-and-a-half miles south of Bodmin, on the north to St. Austell on the south, a distance of seven miles...Castle-an-Dinas and Belowda Beacon, together with the closely adjacent patches of St. Dennis and Roche. The...district in Cornwall, rising to a height of 1,000 ft. above sea-level in Hensbarrow Beacon, an elevation |
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| School of Mines, University of Exeter, Redruth, Cornwall, TR15 3SE. INTRODUCTIONS In any list of Cornish...referred to in modern publications. In 'Minerals of Cornwall and Devon' by Embrey and Symes, published by the...last 10 years - A handbook to the Mineralogy of Cornwall and Devon (1871), the Hensbarrow Granite District...District (1878) and Observations on the West of England Mining Region (1912). There can be very few, if any...published in the 84th Annual Report of the Royal Cornwall Polytechnic Society (Volume 3, New series, 1917 |
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| Transactions of the Royal Geological Society of Cornwall, for 1848 ; and a table of some of the principal...Transactions of the Royal Geological Society of Cornwall. Reports of the Devonshire Association for the...LOCALITIES IN ENGLAND BEDFORDSHIRE BERKSHIRE BUCKINGHAMSHIRE . CAMBRIDGESHIRE CHESHIRE 31 CORNWALL . 32... 64 65 CONTENTS. X MINERAL LOCALITIES IN ENGLAND— (continued ). OXFORDSHIRE PAGB 65 . RUTLANDSHIRE...124 130 APPENDIX 137 INDEX TO LOCALITIES IN CORNWALL 149 INDEX TO MINERAL SYNONYMS 153 1 THE |
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| into the geology and geomorphology of south-west England Volume 6 Part 4 1987 Edited by G.M Power The...into the geology and geomorphology of southwest England and the surrounding marine areas; to hold Annual...Annual Conferences at various places in South West England where those engaged in this research can meet formally...SHEPHERD: Chronology of magmatism in south-west England: the minor intrusions. B. BOOTH and C.S. EXLEY:...pervasive hydrothermal alteration in the St. Austell Granite, Cornwall. M. STONE: Geochemistry and origin of |
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| Sn-W mineralisation in peninsular Thailand and SW England D. A. C. Manning Department of Geology,The University...Newcastle-upon-Tyne,NE1 7RU, England Abstract. The Sn-W deposits of SW England and SE Asia are associated...vein systems are only locally important. In SW England, wolframite and cassiterite mainly occur in hydrothermal...late-stage granitic rocks occur also in SW England, but a later topaz granite, enriched in F, Li and P, also...from a B and metal-rich magma, whereas the SW England mineralisation involved essentially post-magmatic |
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| in topaz for greisenisation and mineralisation in the Hensbarrow topaz granite, Cornwall, England Received:...inclusions in topaz from greisens in the Hensbarrow topaz granite stock (St. Austell, Cornwall) are used...for late stage greisening and mineralisation. The topaz contains an abundant and varied suite of inclusions...Mn+2)2(Nb,Ta)2W+6O10]. Primary L + V inclusions in topaz show relatively high Th (mainly 300 to >500 °C)...0–50 wt % NaCl equivalent). Textures indicate that topaz formed earlier than quartz and the fluid inclusion |
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| Swirling caused by irregularity of fissure wall, St Agnes 5 Plate lD. Part of a breccia vein showing... Fig. 1. Distribution of elvan dykes in west Cornwall 2 • • • 111 Summary During the past ten years...years, diamond drilling for metalliferous lodes in Cornwall has revealed cored sections through some elvans...Jahren hat das Diamentbohren fur Erzgii.nge in Cornwall Kernproben von verschiedenen 'Elvans' gegeben...Quarz und Orthoclase gebildet. Bergarbeiter aus Cornwall benutzten diesen Namen 'Elvan' . lV Du The |
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| kaolin deposits 3 4 Resources Kaolinisation Origin St Austell Granite Dartmoor Granite Bodmin Moor Granite...Southwest England 10 Fig 5 Extent of kaolinisation in the granites of Southwest England 11 Fig 6...Vorkings in the St Austell Granite 16 Fig 8 The distribution of rock types in the St Austell Granite...the United Kingdom and the deposits of Southwest England are world famous for their high quality. The United...range of other uses. The deposits of Southwest England were formed by the in situ alteration of the feldspar |
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| [vo]. hxix, 20. A MICIlOAtETltlC Srt:D~-of the ST. AI~STELL G~XNITE (CORNWILL). ]~ WILLIAIK -A_LFRED...546 547 553 562 564 566 573 ]. INTRODUCTION. Tile St. Austell granite-mass has attracted considerable...much light could be thrown upon the problems of the St. Austell granite by quantitative and qualitative...to 1 , The Geology of the Country around Bodmin & St. Aus~ell ' (Explanation of Sheet 347) iViem. Geol...Surv. 1914; T. C. F. Hall, ' The Petrology of the St. Aus~ell Granite' Prec. Geol. Assoc. vol. xxv (1914) |
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| A SKETCH OF THE GEOLOGY OF CORNWALL, INCLUDING A BRIEF DESCRIPTION OF THE MINING DISTRICTS AND THE...“Campiglia Mines,” &c. With Geological Map of Cornwall, AND NUMEROUS STEEL PLATEs, ILLUSTRATIVE of INFLUENCE...ON SCENERY. REPRINTED FROM THE “GAZETTEER OF CORNWALL.” LONDON : OFFICE of “THE MINING Journal,” 26...ºx Foº: PREFACE. During my present visit to England, my father, Mr. Robert Symons of Truro, pressed...account of the Geology of Cornwall, to accompany his forthcoming Gazetteer of Cornwall. This, owing to the |
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| building and decorative stones of Cornwall, UK COLIN M. BRISTOW Cornwall Geoconservation Group, Ty Gwyn...Gwyn, 46 Chatsworth Way, Carlyon Bay, St Austell, Cornwall, UK (e-mail: mail@colinbristow.com) Abstract:...varied suites of igneous and sedimentary rocks, Cornwall has a rich variety of building and decorative...such as elvan and sandrock, do not occur outside Cornwall, so local stone provides much character to the...Carnmenellis Granite (mainly in Mabe parish), in the St Austell Granite (Luxulyan, Carn Grey and the china |
