 | | Journal (issue) | | ............................................. Wales & West 9 ............................................................... North West iVorthern Wales & West I Southern Russell Society Field Meetings...Campus of the University College of Wales Newport. Our friends in the Wales and West Branch have got together...Steven Mulley South West Branch:Christopher Sharp Wales & West Branch:Rhiannon Cottrell; Edward Penfold...locations. Principally there are quantities of quartz, smoky quartz, cassiterite, amethyst, fluorite, autunite |  | | Book | | the Area. Mines - History Mineralization - General Mine Index (Map References) Mineral Index Minerals of...37 38 39 39 40 PLATES Nantiago Mine Pwllrhenaid Shaft .. Penrhiw Mine Dylife Esgairhir Castell Henfwlch...Cwmystwyth Blaenceulan Pyrite on Calcite (Nantiago Mine) .. ■ .. 11 14 14 17 17 18 19 20-21 22 24 MAPS...Acknowledgements are due to members of The Russell Society (a mine�alogical society based in Leicester) who contributed...west, and the neighbourhood of Tylwch south of Llanidloes to the east. Since the actual mining took place |  | | Book | | A Mineralogy of Wales RfCHARD E. BEYfNS Ocpartmellf o[Geolngy, Nmin11a/Museum of\Valcs, Cardiff AMGUEDDFA...Colliery, Ponh, Mid Glamorgan. National Museum of Wales specimen 48.264.GR 175. ex Cymmer Welfare Library...CE 6 I CES IN WALES 9 30 127 138 6 INTRODUCTION The mineralogy of Wales is diverse. with over...reveal the presence of additional species new to Wales. and perhaps new to the British Isles. It is also...completely new to cience will be discovered in Wales. as techniques for analysing specimens become ever |  | | Report (issue) | | technical history and exploration with reference to mine workings in the British Isles are welcomed for inclusion...•• R .G. GUTHRIE PUBLICATION AFTERSALES NORTHERN MINE RESEARCH SOCIETY 186 STATION ROAD BILLINGHAM CO...CLEVELAND TS232RT Tel: 0642 554437 @ NORTHERN MINE RESEARCH SOCIETY This volume is copyright under...Sheffield S2 5HH, for the Publishers, The Northern Mine Research Society, Sheffield, England. ISSN: 0308-21...C.ENG., FGS., FIMM A MONOGRAPH OF THE NORTHERN MINE RESEARCH SOCIETY 1978 BRITISH: MINING NO .10 |  | | Journal (issue) | | esearch Council Bulletin 61 Bryn-teg Borehole, North Wales P. M. ALLEN and A. A. JACKSON Contributions: P....environment 14 Sununary of the volcanic activity 15 Dolwen Forn1ation Conglomerates 15 Pebbly Sandstones 16...between the Bryn-teg Volcanic Formation and the Dolwen Formation 22 Epidotisation Geology of the area...Correlation Correlation with other formations in North Wales 23 Orogenic setting 25 References Appendices l Geochemistry...Bryn-teg Volcanic Formation and some pebbles from the Dolwen Formation (Hornung and Gray) 27 2 Geophysical investigations |  | | Report (volume) | | thanks to the Council of the University College of Wales, Aberystwyth, for having released me as far as possible...fILLS, Llanidloes. Mr. R,. R . NANCARRO\V, Ysbytty ·Ystwyth. Messrs. ONSL0W and 1vlILLER, Llanidloes. Mr...perrnission to use the mine records and plans in the Estate Office; to 1\Ir. P. GRA~T, Llanidloes, for access to...IX.-Longitudinal Section of Loveden Mine • • X.,, ,, Brynyrafr Mine XI.,, ,, East Daren · • XII.. ,, ,...Dyfngwm districts X:Xll.,, ,, district near Van Mine• XXTII.-Plan of Van fiat.s • XXIV.-Chart showing |  | | Report (issue) | | Association. Special care should be taken at old mine workings some of which may be in a dangerous condition...C/) <( :::> --, a: en a: ♦ Id] z -u,c( - Quartz-sulphide-g.old c.200 mineralualion following major...to the Dolwen Formation , mark the establishment of a sedimentary basin that covered all of Wales, much..., locally pebl.>ly , sandstone of grcywacke or quartz wacke composition that display the 4 1 IN'T:AODUCTION...the end of the Tremadoc. Although m uch of orth Wales wa. emergent at this time, Lynas ( 1 973) showed |  | | Catalog/List | | or Fax 01872 223 227 (UK Time 8am -9pm) FLUORITE,Rosilare Level.Minerva Mine No 1 ,Cave-in-Rock District...Emmasville.New South Wales.Australia.Incomplete milky quartz prism of 50mm in length studded with lustrous dark...colln.£10 6. QUARTZ,var ROCK CRYSTAL,Minas Gerais.Brazil Pure snowy white druse of quartz prisms to 35mm...£10 9. SPHALERITE,var.Ruby Blende.Mid-Continent Mine,Pitcher.Oklahoma,USA Rich continuous druse of ruby...of locality.Matrix free.Good RF or D TN.£8 14. QUARTZ,var Rock Crystal,Hardanger.Norway.Clean xtl group |  | | Journal (article/letter/editorial) | | even along the northern edge of “Armorican” South Wales, where low dips are a feature, a NE-SW grain is...Geol. J. Vol. 7, Pt 1,1970 69 T. M. THOMAS In Wales the sequence of events during earlier geological...therefore be observed in all the upland areas of Wales where long smooth profiles are a rarity. O n many...the Glacial epoch and previous cycles of erosion. Wales is essentially an upland country, being a major...720 m. Many dykes, inclined sheets and bosses of quartz porphyry, microgfanite and rhyolite break up the |  | | Journal (article/letter/editorial) | | South Wales J. C. W. COPE* & D. M C ILROY† * Department of Earth Sciences, University of Wales Cardiff...Cardiff, P. O. Box 914, Cardiff CF1 3YE, UK † Department of Earth Sciences, University of Liverpool, Brownlow...Brownlow Street, Liverpool L69 3BX, UK (Received 17 January 1997; accepted 23 September 1997) Abstract...of the Llangynog Inlier, Carmarthenshire, South Wales, are identified as agglutinated foraminiferans....(Cope, 1982), south of Carmarthen in southwest Wales, was first discussed by Cope (1980), who had shown |  | | Report (issue) | | Mineral exploration in the· Harlech Dome, North Wales I ·t I I I· I I I I I I • I I· I I I I 1....Mineral exploration in the Harlech Dome, North Wales. Geology P. M. Allen, BSc, PhD Geochemistry D....Geochemical and geophysical investigations around Garras Mine, near Truro, Cornwall Molybdenite mineralisation...Shetland Preliminary mineral reconnaissance of Central Wales Report on geophysical surveys at Struy, Invernessshire...associated with the Skiddaw Granite near Carrock Mine, Cumbria Investigation of stratiform sulphide mineralisation |  | | Journal (article/letter/editorial) | | mesothermal gold lodes of the Dolgellau gold belt, North Wales Downloaded by [RMIT University Library] at 20:36...and D. H. M. Alderton Synopsis The auriferous quartz–sulphide veins of the Dolgellau gold belt represent...The gold lodes are composite, multistage, ribbon-quartz bodies occupying shear zones in clastic marine...whereas the final stage is dominated by Pb–Zn. Quartz and carbonates accompany all stages, their relative...width at outcrop, within the Caledonides of North Wales. It runs ENE from the Cardigan Bay coast, passes |  | | Journal (article/letter/editorial) | | district, and on the main road from Aberystwyth to Llanidloes which divides the area into two almost equal...plateau' which is characteristic of so much of Central Wales; south of the Aberystwyth road it reaches a nearly... The general features of the region of Central Wales were ably described by Dr. Herbert Lapworth (6)...aware that Murehison ever visited this part of Wales, which was not co]oured on the map accompanying...the neighbourhood of MaUwyd to the hills near Llanidloes, leaving the Plynlimmon ridges far to the west |  | | Report (edition) | | SURVEY AND MUSEUM BRITISH REGIONAL GEOLOGY NORTH WALES by BERNARD SMITH, M.A., Sc.D., F.R.S. and T. NEVILLE...North Wales . 75 78 IV ILLUSTRATIONS FIGURES IN TEXT PAGE The rock succession in North Wales Geological...lateral variations in the Cambrian rocKs ot .North Wales Map and section of the Cambrian rocks in the neighbourhood...Outline map illustrating Ordovician overstep in North Wales 12 Ordovician fossils. 13. C°dris ran^l SeCti°nS...showing lateral changes in the Bala Series of North Wales 16. MSnowKa8 the distribution of members of the |  | | Report (issue) | | Craig Llannerch-y-cawr, Claerwen valley, Powys, mid Wales. BOS Photo MN323 l l. © NERC I 999 Keyworth...Basement (Precambrian) rocks North-west Wales South-west Wales \Velsh borderland Cainbrian basin and shelf...Tudwal 's Peninsula Northern Snowdonia South-west Wales \Velsh borderland Ordovician basin and shelf deposits...South-west Wales Central \Vales and the Welsh borderland Silurian basin and shelf deposits North Wales Mid-Wales...Mid-Wales South Wales and tJ1e Welsh borderland Post-Caledonian cover Devonian Carboniferous Pennian, Triassic | | | Report (edition) | | F4 Fs iL a7 aa me | _ ae a | ' 4 | Piz 4 Wales, d ae ae 4 ; Front cover Aber Falls. Face...Research Council British Regional Geology North Wales THIRD EDITION By Bernard Smith, MA, and T. Neville...publications relating to the geology a of North Wales 82 89 iv ILLUSTRATIONS FIGURES FIG. 1. 2....36. IN TEXT PAGE The rock succession in North Wales ae mn us de mi sen ff Geological map of Anglesey...of Pre-Cambrian rocks on the mainland of North Wales Re a os = A ae ee mee? Cambrian fossils .. ne 2 |  | | Journal (article/letter/editorial) | | importance have been demonstrated farther east in South Wales, are shown to be of greater magnitude in central...compared with that of the North Crop of the South Wales coalfield, while THE PRESENT ACCOUNT 283 RAYMOND...provides a close analogy between eastern South Wales and Pembroke shire and thus simplifies and unifies...of alI Dinantian zones in Pembrokeshire or South Wales or South-Western Province. The two breaks demonstrated...sub-Visean unconformity is best exposed in the cliffs at Dolwen Point, Pendine, and in Cloygen Quarry, a few miles |  | Carruthers, R. G., Eastwood, T., Wilson, G. V., Pocock, R. W., Wray, D. A. (1916) Special Reports on the Mineral Resources of Great Britain Vol. 2, Barytes and Witherite (2nd ed.) Geological Survey of Great Britain | Report (edition) | | Bromehead furnishes a.n aocount of par� of North Wales. For the chapter on Scotland M r . Wilson is responsible...the 50 Wales. Mnras (contd.) : North Central and South Wales. Subsidiary occurrences in Wales .. V.-DESCRIPTION...Baryt� from the leading dist,riots of England, Wales and Ireland Page 4 ,. 2.--Total Output of Barytes...associated with varying proportions 0£ calcite, quartz or tluorspar, though many veins are known in which...Kittgd1>m comes from England, Wales 'lmd-ffll.e.n.d. In Scotland one mine only is being " worked. The chief | | | Report (edition) | | British Regional Geology TOM c o s t e s North Wales THIRD EDITION By Bernard Smith, MA, ScD, FRS, and...North Wales 89 iv ILLUSTRATIONS FIGURES IN TEXT FIG. 1PAGE The rock succession in North Wales Geological...of Pre-Cambrian rocks on the mainland of North Wales 5. Cambrian fossils 6. Geological map of the Harlech...lateral variations in the Cambrian rocks of North Wales 8. Map and section of the Cambrian rocks in the...Outline map illustrating Ordovician overstep in North Wales 12. Ordovician fossils .. 13. Comparative sections | | | Report (edition) | | Research Council British Regional Geology North Wales THIRD EDITION By Bernard Smith, MA, ScD, FRS, and...important publications relating to the geology of North Wales .. .. .. .. .. .. . . 89 lV ILLUSTRATIONS FIGURES...PAGE .. .. .. .. .. The rock succession in North Wales .. Geological map of Anglesey .. .. .. .. .. .....rocks on the mainland .. .. .. .. .. .. .. of North Wales .. • • • • 5. Cambrian fossils • • • • • • • • •...variations in the Cambrian .. .. .. rocks of North Wales . . .. .. .. .. 8. Map and section of the Cambrian |  | | Report (issue) | | technical history and exploration with reference to mine workings in the British Isles are welcomed for inclusion...:. R.G. GUTHRIE PUBLICATION AFTERSALES NORTHERN MINE RESEARCH 186 STATION ROAD BILLINGHAM CO.CLEVELAND...CLEVELAND TS232RT Tel: 0642 554437 © NORTHERN MINE RESEARCH SOCIETY SOCIETY This volume is copyright...Sheffield S2 5HH, for the Publishers, The Northern Mine Research Society, Sheffield,· England. ISSN: ISBN:...OF THE C.Eng., NORTHERN SOCIETY. 1979. FGS., MINE FIMM. RESEARCH 6 I ' AUTHORS =====-- NOTE |  | | Journal (article/letter/editorial) | | mineralisation and ore controls at the Clogau mine, Dolgellau, north Wales, United Kingdom S. C. Dominy*1,2,3 and...of 17 g/t Au, Clogau is the largest and richest mine in the Dolgellau gold-belt and is the most prolific...production between 1983 and 2007. The principal gold-quartz bearing Main reef can be traced for about 3 km...complex and composed of swarms of narrow sub-parallel quartz veins separated by sheets of country rock. The...shoots. Keywords: Dolgellau gold-belt, Clogau mine, Gold-quartz reefs, Ore controls, Ore shoots Introduction |  | | Journal (article/letter/editorial) | | Ordovician detrital zircon geochronology of North Wales Hayley D. Pothier a, John W.F. Waldron a,⁎, David...Columbus House, Greenmeadow Springs, Cardiff CF15 7NE, UK a r t i c l e i n f o Article history: Received...Precambrian to Ordovician sedimentary basins of Wales display contrasting histories across major NE-striking...mosaic of terranes, including most of England, Wales, southern parts of Ireland, and much of Atlantic...Lk New Brunswick Ireland Ln Meguma Terrane Wales MP Rs Newfoundland WB 0 A Ag England 250 |  | BOTTRELL, S. H., GREENWOOD, P. B., YARDLEY, B. W. D., SHEPHERD, T. J., SPIRO, B. (1990) Metamorphic and post-metamorphic fluid flow in the low-grade rocks of the Harlech Dome, north Wales. Journal of Metamorphic Geology, 8 (1) 131-143 doi:10.1111/j.1525-1314.1990.tb00460.x | Journal (article/letter/editorial) | | the low-grade rocks of the Harlech Dome, north Wales S . H . BOTTRELL', P. B . GREENWOOD', B . W . D... Leeds LSZ 9]T, UK %GS Geochemical Division, 64 Grays Inn Road, London WC7X &VG, UK ABSTRACT A combination...low-grade metamorphism of the Harlech Dome, north Wales. Fluid inclusion studies show that in most of the...and rocks varies between different formations and quartz-oxygen isotopic compositions show considerable...late-stage fluids at lower temperature than the quartz in the same veins. Alternatively, the original |  | | Journal (issue) | | I t . NUMBER 17 • AUTUMN 1996 () F s s UK journal of mines & minerals CONTENTS number...L 10h11Pearce COVER:CERUSSITEfrom Pentireglaze mine, St. Minver, Cornwall with crystals to 32mm. Specimen...described in the next issue of this journal. The UK Joumal of Mines and Ali11erals publishes articles...CLASSIFIED ROCKBOTTOM PUBLICATIONS LTD ISSN 0952-2409 UK journal TYPESETTING AND PRINTING BY Ryton Typing...Institutional Sponsor: THE BRITISH MICROl\lOUNT UK Journal of Mines & l\lincrals No. 17 -1- SOCIETY |
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