 | | Catalog/List | | 1 2NL email richard.tayler@minerals.freeserve.co. uk (note-- postage extra) Catalogue No 121 Phone 01932...Stilpnomelane veins, Ystrad Mine, Betws Garmon, Gwynedd Wales Nant Francon formation small 2x3 inch £15 32...about 2.5 x 1 inch Mynydd Nodol Arenig area Gwynedd Wales £25 55 CALCITE grey-white with some orange...Calcite too (Pandora Mine Gwydyr Forest area, Gwynedd Wales) 2x2.5 £12 60 WILLEMITE rich brown to white...masses in quartz Prince Edward Mine Trawsfynydd Gwynedd Wales lx2 £4 ALMANDINE pegmatite coarse microcline |  | | Journal (volume) | | from Llyn Du Bach Mine, Harlech, Merionethshire, Wales. National Museum of Wales Specimen No. NMW 2013...the Lower Cambrian manganese ore bed, Harlech, Merionethshire, Wales Tom F. Cotterell 39-51 Franklinphilite...the Lower Cambrian manganese ore bed, Harlech, Merionethshire, Wales Tom F. Cotterell and Neil Hubbard ...blobs’ in Leicestershire, the focus shifts to North Wales with articles on the complex and intriguing mineralogy...earth element bearing mineral chernovite-(Y) in Wales. Volume 16 concludes with an excursion to the Lewisian |  | | Journal (volume) | | veinlets in the Cambrian manganese ore bed, Harlech, Wales Tom F. Cotterell, John S. Mason and Allan C...from around 40 to over 110, including the ‘first UK occurrences’ of a number of minerals, such as fornacite...Manchester University Museum; the National Museum, Wales; Stockholm Museum. 2 Cambridge, Loughborough, Manchester...Track, Allington, Salisbury, Wiltshire SP 4 0DD, UK Michael S. RUMSEY Mineralogy Department, Natural...Natural History Museum, Cromwell Road, London, SW7 5BD, UK Introduction For the past five years we have been |  | | Journal (article/letter/editorial) | | diagenesis of the Cambrian manganese deposits, Harlech, North Wales M. A. Bennett Department of Earth Sciences...pelites of the Harlech Grits Group (LowedMiddle Cambrian) of the Harlech area, North Wales. It is most intense...Gamlan Formation where it forms coticules (quartz-spessartine metapelites). Low-grade mineralization also occurs...manganese concentration in the sediments. In the Harlech ore, many original depositional textures are preserved...occurs in the clastic sediments of the Harlech Grits Group of the Harlech Dome, and also in the Cambrian sediments |  | | 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) | | ) ·, ' Height • 1n metres 800 700 MORFA HARLECH BAY Hartech 5lXJ + 400 + Llandanwg 300....Pont-SeaIn on " Figu re 1 Simplified geolOg)' of the Harlech (135) geological sheet showing excursions and foot...Audrey A. Jackson Geological excursions in the Harlech Dome 1835 Geological SUJ"\ley of Gre_at Britain...Audrey A. 1985 . Geological excursions in the Harlech dome. Classical areas of British geology, British...year hundreds of students of geology visit the Harlech dome. The only guide to this classical area of |  | | Journal (article/letter/editorial) | | the Middle Cambrian Manganese Carbonate Beds of Wales and Newfoundland By P. A. MOHR and R. ALLEN ABSTRACT...petrography, and petrology of the manganese ore of North Wales, and of the contemporaneous basal-Middle Cambrian...VOL. 1 0 2 . NO. 4 Manganese Carbonate Beds of Wales and Newfoundland 329 Eight trace elements were...central situation of the former in the original Harlech basin (Woodland, 1939). The correlation confirms...layers. 25 + mm. (PMX) Manganese Carbonate Beds of Wales and Newfoundland 331 (b) YLlethr cm. it A laminated |  | | Journal (article/letter/editorial) | | calcite and caryopilite. Tephroite, rhodonite, spessartine, and accessory alleghanyite and sonolite formed... hausmannite, rhodonite, tephroite and (or) spessartine. Taliaferro and Hudson (1943) proposed a similar...rhodochrosite +_barite rhodonite _+rhodochrosite _+spessartine _+pyrophanite _+chlorite rhodochrosite +jacobsite..._+alleghanyite or tephroite or sonolite tephroite + spessartine + chlorite + rhodochrosite _+jacobsite _+pyrophanite..._ galaxite rhodonite +_chlorite rhodonite + spessartine _+pyrophanite rhodonite + magnetite + pyrophanite |  | | Report (issue) | | Craig Llannerch-y-cawr, Claerwen valley, Powys, mid Wales. BOS Photo MN323 l l. © NERC I 999 Keyworth, Nottingham...North-west Wales South-west Wales \Velsh borderland Cainbrian basin and shelf deposits Harlech Dome and...Tudwal 's Peninsula Northern Snowdonia South-west Wales \Velsh borderland Ordovician basin and shelf deposits...Northen1 and central Snowdonia Harlech and Berwyn D01nes Lleyn South-west Wales Central \Vales and the Welsh...Silurian basin and shelf deposits North Wales Mid-Wales South Wales and tJ1e Welsh borderland Post-Caledonian |  | | Journal (issue) | | ................. . Chart topping rocks: Top 100 UK "Geosites" named ............................ Mineral...aims the recording of new and interesting items of UK topographic mineralogy. If you think your group may...Weekend") which will be hosted this year by the Wales & West Branch at Coleford in Gloucestershire from...comfort. The amount of water blowing around over the UK is vanishingly small compared to the amounts of water...might be some which are of interest to you. The Wales and West Branch are still in the early stages of |  | | Report (issue) | | ...... ..... Unknown ................ ..... Spessartine .............. ..... Calderite. ...............Yellow ore, Harlech Carbonate, average, Harlech Red ore, Harlech Microspherulitic ore, Harlech Corresponding...microspherulitic, yellow, and carbonate ores from Harlech, Wales (Bennett, 1987). D, REE patterns of chert and...likely to form include tephroite, pyroxmangite, spessartine, bixbyite, chlorite, and perhaps the rare Mn-chlorites...Ta Ca Ideal compositions: Rh-Rhodonite Sp-Spessartine Ca-Caryopilite T-Tephroite Ta-Taneyamalite T |  | | Report (issue) | | AROLWG DAEAREGOL PRYDAIN Regional geochemistry of Wales and part of west-central England: stream water ...GEOLOGICAL SURVEY. 1999. Regional geochemistry of Wales and part of west-central England: stream water....255 9) North-west England and North Wales 1997 (0 85272 307 5) Wales: stream water 1999 (0 85272 363 6)...0115-936 3200 e-mail: sales@bgs.ac.uk www.bgs.ac. uk Murchison House, West Mains Road, Edinburgh EH93LA...Stapledon Building, University of Wales, Penglais, Aberystwyth, Ceredigion, Wales SY23 3DB ,:r 01970-622541 Fax |  | | Report (issue) | | them 'monazite grise'. Detailed work in Central Wales has shown that the monazite nodules are not concentrated...sediment samples con taining more than 1 % cerium in Wales 2 TABLE 1 A summary of Ce results 3 DISTRIBUTION...sedimentary rocks of the Welsh Basin (Figu re 1). In the Harlech Dome there is a pronounced change from low cerium...of areas where nodules are not found) over the Harlech Grits Group to moderately high levels over the...sedimentary rocks of Llandeilo-Ashgill age. In Central Wales (Ball and Nutt, 1976) and the Berwyn Bibliographical |  | | Journal (article/letter/editorial) | | in a garnet-chlorite rock from Foel Ddu, near Harlech, Merionethshire. By P. A. MOOR, B.Sc., Ph.D. Department...Manganese Shale group (Lower Cambrian) of the Harlech district, an opportunity arose to evaluate this...1.8234-0.002, this indicates a composition: spessartine 49 %, almandine 36 ~o, andradite 15 ~ (using...may be calculated to lie between 40 and 47 % spessartine (44 and 37 ~/o almandine), a satisfactory confirmation...Woodland (1939), and resembles more closely the spessartine-almandine garnets of low-grade metamorphic pelitie |  | | Journal (issue) | | UK TS 2 EDITORIAL 2 BUXTON COVER:A superbgreenfluoritetwin25 mmon edge from the Heights Mine, Westgate...Piddcollection. MUSEUM Ros Westwood 6 MINERAL NEWS 11 The UK ]011mal ef Mines a11dMinerals publishes articles...UKJounul of Mines & Mincr:ils No '7 -l- EDITORIAL he UK]oumal efMi11es& Mi11eralsis now in its twenty second...which at least eight have makers or retailers marks. UK Journal of Mines & Minerals No. 27 -2- Frontispiece...The imageis a combination of six digitalphotos. UK Journal of Mines & Minerals No. 27 -3- However |  | | Journal (issue) | | and one member suggested that this could be in the UK or EU. COST A location with on-site accommodation...were identified: geological/mining walks, museums (UK or EU) and member's collections. ADDITIONAL COMMENTS...among the pyralspite series (pyropealmandine-spessartine) and also the ugrandite series (uvarovite-grossular-andradite)...(SiO 4 ) 3 8 RUSSELL SOCIETY NEWSLETTER Spessartine Mn 3Al 2 (SiO 4 ) 3 Uvarovite Ca 3 Cr2 (SiO 4...at other minerals that have been important in the UK and then the important minerals we have to import |  | | Journal (article/letter/editorial) | | Electron-microprobe analyses of garnet show higher spessartine and lower almandine components relative to garnet...électronique montrent une teneur plus élevée en spessartine et plus faible en almandin que le grenat de la...average pelite or shale, and thus commonly contain spessartine. They occur in sequences of pelitic schist, amphibolite...dominated by almandine (Alm) and spessartine (Sps) components. The spessartine content is highest (33.4%) in...bottom, the profiles pertain to the almandine, spessartine, pyrope and grossular components. Symbols: c: |  | | Journal (article/letter/editorial) | | (including tephroite,the Mn humitc-groupminerals,spessartine, rhodonite,and pyroxmangite), and the oxidesgalaxiteand...continentalor andesiticsource,is reflectedin spessartine-rich layers.MinorMn andCo sulfidemineralization...deChlorite p __a __a __ positisoneof a numberof spessartine-rich Mn occurGageitc p __4 __4 __4 rencesin the...Massivespessartine Broken Hill deposit,New South Wales, Australia, garnetformsa 0.6-m-widelensin contactwith...observaandgeochemical characteristics arepreservedin lam- spessartine tions of this study show that the relations among |  | | Journal (volume) | | non-member subscription rates for this volume are: UK £13 (including P&P) and Overseas £15 (including P&P)...mineralisation of Snowdonia and the Llŷn Peninsula, North Wales John S. Mason 93–105 Andradite-bearing skarn-like...suspected palaeogene dyke from Coed y Brenin, North Wales John S. Mason, Martin Liezers and Tom F. Cotterell...emphasise the geological context of mineralisation in Wales, in two articles, one of which includes a note on...25 and parts of 13, 24, 26, 31, 32 (England and Wales), volume 1, Tyne to Stainmore, second edition. HMSO |  | | Book | | for 1:50 000 Geological Sheet 134 (England and Wales) Biostrettigraphy WT Dean F ~1artin Geochemist...University D ~1cCarroll, BA, PhD University of Wales, Swansect CONTRlBUTORS R £ Bevins, PhD, CGeol JM...naturelles de Belgique, Brussels Printed in the UK for The Stationery Office TJ105026 C6 07/02 V...Supergroup 9 Gwna Melange 9 7 Three Cambrian l 0 Harlech Grits Group 11 Hell's Mouth Forrnation 11 Trwyn...Peninsula 12 Sections through the lower part of the Harlech Grits Group 13 Upper Ceiriad Formation and lower |  | | Book (volume) | | classical section through the Cambrian in South Wales. In the background is the type section of the Caerbwdy... . . . . . . . . .15 The Cambrian of Wales and England by A. W. A. Rushton ............ 43...1961). The Cambrian System, whose type area is Wales, was named by Sedgwick (in Sedgwick and Murchison... ruggedest and most complicated tract of North Wales.’ Woodward’s (1908, p. 93) account is delicately...giant strength on a barren primary district in Wales, which was he owns like “rubbing himself against |  | | Journal (article/letter/editorial) | | both, i28. Amblygonite, France, Maine, New South Wales, Saxony, anal., cell-dimensions, distinction from...meteorite, 34. BALL (D. F.), Basaluminite from near Harlech, 291. Ballyshannon, Donegal, Eire, omphacite, 6I...296. Basalt, electroylsis of, 568. Basaluminite, Wales, opt., X-ray, d.t.a., 291. BASTA (E. Z.) and KADER...trace elements (Cd, Cu, Ga, Ge, Mn), 153; New South Wales, strained, grain-growth in, 852. Bokkos, Jos, Nigeria...other layer silicates, 2o6. Broken Hill, New South Wales, orthoclase, anal., d2oi, 489; blende, galena, 852; |  | | Book | | provided by: Amgueddfa Cymru (National Museum of Wales, Cardiff); British Geological Survey, Edinburgh...tellurob:smu'Ji::eC!ogau andVigramines,nr Oolgellau, Gwynedd, Wales t!.e'.don ra:::ayqJarry,nr o~eha'Tlp'.:i. ...United Kingdom, including England, Scotland and Wales, arc here referred to as Britain. The offshore teITitorics...but two). but these. along with many others in Wales, were swept awa) with the introduction of administn1tive...followed by Benallt mine. Lleyn Peninsula, Gwynedd, Wales (4). Three localities (one in England and two |  | | Journal (issue) | | IN THE SUPPLY OF QUALITY MINERAL SPECIMENS IN THE UK. WE ARE CURRENTLY LOOKING TO BUY INDIVIDUAL MINERAL...01884 821724 e-mail: ian@crystalciassics.co.uk UK TS C 2 COVERPrismatichexagonalberyl to 14 mm w...Moretoncollection. TwENTY YEARS IN MINERALS David Green 9 The UK ]011rnalof Mines and Minerals publishes articles...SPECIAL ISSUE The first of t\vo special editions of the UK ]oumal of 1\lli11es [.,,.Minerals celebrating t\venty...n 2001 we celebrate the twenty-first issue of the UK ]011malof Mi11csmid Mi11erals with a backward look |  | | Report (issue) | | Sourh-East England UniL South-Western lJnit Southern Wales and Welsh Marches Unit London Drawing ()ffice Borehole...England and Wales NORTHERN ENGLAND AND \VALES DIVISION North-Eastern lJnir North Wales lJnit North-Western...Geological Survey of Great Britain Southern England and Wales Central and South Midlands District. . . . . . ...South-Western District . . . . . . . . . . . . Southern Wales and Welsh Marches District . . . . . London Drawing...}Jorthern England and Wales North-Eastern District . . . . . . . . . . . . }Jorth Wales District . . . . |
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