 | | Book | | GEOLOGICAL SURVEY Geology of the country around Aberdaron, including Bardsey Island ., f' ., ..... ...for 1 :50 000 geological sheet 133 (England and Wales) This memoir, and the 1:50 000 map that it describes...Environment Research Council and the University of Wales College of Cardiff. The interpretations presented...manganese ore. Ordovician INTRUSl\7E ROCKS ABERDARON BAY GROUP undivided or Porth Meudwy Forn1ation...Mawr [A 15002]. Geology of the country around Aberdaron, including Bardsey Island The area described in |  | | Journal (article/letter/editorial) | | CHARLES ALFRED MATLEY, D.SC., F.G.S. R e a d M a y 6th, 1931 [PLATE XIV] CONTENTS I. Introduction .....c o m m u n i c a t i o n to t h i s S o c i e t y (Matley, 1928)1 I s h o w e d t h a t t h e P r e...C o m p l e x of s o u t h - w e s t e r n L l e y n is s e p a r a t e d f r o m t h e Palmozoic r e...by the B o u n d a r y Thrust, which runs from the south coast of t h e L l e y n P e n i n s u l a a...A b e r d a r o n B a y , in a n o r t h e r l y to n o r t h - e a s t e r l y d i r e c t i o n as far |  | | Report (issue) | | manganese deposits of Rhiw, western Llyn, North Wales M J Brown and A D Evans \ BRITISH GEOLOGICAL...manganese deposits of Rhiw, western Llyn, North Wales Geochemistry M J Brown, BSc Geophysics A D Evans...site/galena vein from the Gwynfynydd Gold Mine, near Dolgellau in North Wales This report was prepared for the...manganese deposits of Rhiw, western Llyn, North Wales. British Geological Survey Technical Repon WF/89/14...Detailed magnetic surveys Tyddyn lvfeirion Nant y Gadwen Mynydd Rhiw 11 13 21 24 GEOCHEMICAL INVESTIGATIONS |  | | 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 |  | | 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...subscriptions and advertising. BARITE FROM BARRAS END MINE Peter Briscoe 15 DIGITAL MICRO-PHOTOGRAPHY David...FINANCE Jean C. Spence CESAflOLITE FROM EAGLEBROOK MINE Tom Cotterell 39 NEWS and EVENTS Mick Wolfe Richard...Richard Bell WURTZITE FROM LOCKRIDGE MINE Ben Grguric • Ernest Nickel 41 DESIGN Julie Ballard COPPER |  | | Journal (issue) | | .1». 1~i;;- 4- '"-~-- .. .... y,,-c..--t.. ze R!_✓ssefTSociet"y e :Russe/TSociety "Ii€ :RusselTSociety...Blue Chisel Point Baryte Blades from Force Crag Mine, Cumbria: .......................... . 14 - 15...now have the prospect of a world-class tungsten mine being developed atHemerdon in Devon, a full-scale...collection contains numerous excellent pieces from the UK and abroad. On one occasion he was invited to exhibit...on from the successful event last November, the Wales & West Branch, in conjunction with the Cheltenham |  | | Journal (article/letter/editorial) | | THE Manganese-ore, which has been mined in the Nant-yGadwen and Myrnydd Rhiw localities is intercalated...zone by other ashes and some spilitic lavas." The Nant-y-Oadwen occurrence is described thus: "The eastern...much crushed and disturbed . . . . as it is at Nant-y-Gadwen, the harder bands being squeezed into lenticles...(Matley, 1932, p. 245). " The manganese-ore of Nant-y-Gadwen and Hhiw. now a hard, dark purple, compact rock...associated with sediment. One slice . . . . . from Nant-y-Cadwen is a crystal tuff with many fragments and |  | | Journal (volume) | | flat, Admirality Concession Flat, Nentsberry Haggs Mine, Nenthead, Cumbria. Specimen width 60 mm. Trevor...Ddu and Bwlch Mawr, Clynnog-Fawr, Caernarfon, Gwynedd, Wales Tom F. Cotterell and Michael S. Rumsey 17–23...from the manganese mines at Rhiw, Pen Llŷn, Gwynedd, Wales, including the first British occurrences of...Kinoshitalite from Bennalt Manganese Mine, Rhiw, Pen Llŷn, Gwynedd, Wales: a first British occurrence Alan...Llancynfelyn, Central Wales John S. Mason 32–35 The mineralogy of Pim Hill Mine, Shropshire, with a |  | | Report (issue) | | a&te-product has often become the most valuable asset of a mine under changed conditions as· rega_rds demand. Tin-mines...the·aescription· o1 the-ma.iiganese--workings in North Wales, the chief wolfram•mines i n Illogan· .and the genera...2.-0re-dressing plant of the Gunnislake Clitters Mine ... PAGB 2 26 , CHAPTER I. TUNGSTEN OltES--IN'l'RODUCTION...granite of th& collected in £our years from one mine. • Thorpe, 'Dictionary of Applied Chemistry,' vol..., -+'> Q G) ,..Q -+'> ""'0 0 <") "'A D,:.·;y/;!: g, C:' ·-"' 0 ·.;3 0 p. ·-AIi: b() .• |  | | Journal (issue) | | UK C TS 2 EDITORIAL COVER.Smalt-blueplumbogummite with minor pyromorphite on vein quartzfrom RoughtonGill...Ballard 39 EPIDOTE-(SR) AND PIEMONTITE-(SR) BENALLT MINE FROM NEWS and EVENTS Peter J. Briscoe David McCallum...of the Editorial Board. GORCEIXITE FROM BENALLT MINE Tom Cotterell • Richard Tayler 61 Publication...N0952-2409 BOOK REVIEWS 68 PRINTEDBY ADVERTISEMENTS UK Journal of Mines & Minerals No. 33 -1- EDITORIAL...the journal by subscription. We have examined the UK subscription rates and these will remain at £16 for |  | | Report (issue) | | MANGANESE ORES, l!Y H. DEWEY AND C. E. N. BR011EHEAD, B..A.., WI'l'H CONT.R.ll!UTIONS ll Y T. EASTWOOD...waste-product has often become the most valuable asset of a mine under changed conditions as regards de,mand. Tin-mines...Manganese. Distribution of the Ores. Output, in North Wales from 1892 to 1913. Output and value in the United...2.-0re-dressing plant of the Gunnislake Glitters Mine 26 A2 ,\. , ... I 'l CHA.P�L'ER I. TUNGSTEN...o:f wol�ram were collected 1n four years fro1n one mine. The granite of the * Thorpe, ' Dictionary of Applied |  | | Journal (article/letter/editorial) | | East Iceland: beudantite, 431 Pengenna (Trewethen) mine, St. Kew: pitchsbone, oligoclase, 587 Sellatur...s (F~eroerne) Erionite, chabazite, 343 N o r w a y (Norge) Gryting, Risor: fergusonite (var. risSrite)...British Isles E~GLA~D i~D WALES Adamite, hiibnerite, xliv Billingham anhydrite mine, Durham: aph~hitalite(...), thenardite, 172 Blaen-y-Nant, Nant Francon, Caernarvonshire, North Wales: chlorite, gar- beudantite...cornubite, 1 Treburland mine, Altarnun: genthelvite, molybdenite, 921 Treore mine, St. Teath: beudantite |  | | Journal (article/letter/editorial) | | richer in manganese. find of neotocite at the Geevor mine, Cornwall, Wittingite and neotocite (Nordenski61d...hordenskidld, ]049) have chronological p r i o r i t y . Nordenski~Id is believed to have classified w i...Goldich, Igbl). The members of the group are f a i r l y c ~ o n in manganesedeposits of the volcanogenic-sedbeentary...the ~e~e~t f i n d of ~uch a miaeral at the Geevor mine, %orn~a~. This occurrence is a ~ i t t l e over...mile ~RE of Wheal Owles, the typ~ l o c a l i t y for the re)a~ed mineral penwithite (Co]line, IB78 |  | | Report (issue) | | Pleochroism: Dark to pale yellow-brown. Orientation: X ' c; Y ' a; Z = b. Dispersion: r < v: ® = 1.571 ¯ = 1.610...¯ = 93:96± Z=8 X-ray Powder Pattern: Harstigen mine, Sweden. 12.5 (100), 3.14 (25), 2.696 (14), 3.46...Calcite, rhodonite, caryopilite, barite, lead, garnet, manganoan biotite, pyrophanite (Harstigen mine, Sweden);...Sweden); rhodonite, willemite, bustamite, axinite, clinohedrite, datolite, roeblingite, charlesite (Franklin...caryopilite (Molinello mine, Italy). Distribution: In Sweden, from the Harstigen mine, near Persberg, and |  | | Report (issue) | | manganoan tremolite, quartz (Takanosu mine, Japan); rhodonite, manganoan fayalite, bustamite, manganoan...Ogdensburg, Sussex Co., New Jersey, USA. In the Kyurazawa mine, Ashio, Tochigi Prefecture, Japan. Large composite...composite crystals from Broken Hill, New South Wales, Australia. Pyrosmalite series minerals (with Mn:Fe around...Takanosu mine, Takarazawa, Tochigi Prefecture, Japan. From Nant Fracon, Wales. In the Treburland mine, Altarnun...Radium, Northwest Territories, Canada. In the Lar mine, Tierra Amarilla, Copiapó, Chile. Name: For its |  | | 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...dating from the early nineteenth century - the old mine heaps still remaining providing the basis for collecting |  | | Book | | hystatite .................................... 262 Y: yarrowite to yugawaralite .........................provided by: Amgueddfa Cymru (National Museum of Wales, Cardiff); British Geological Survey, Edinburgh...a'1thanum 36 57 VI Tungsten Li L'.h;um Lutc:tium Xe y Xenon Lu l/.3 11.agnesum 3 71 12 Yb Ytterbium...meneghinile Pengenna mine,St Kew,Cornwall; Shallowfield Bridge,SouthMolton,Devon Tynebottom mine,Alston.CUm~ria...CUm~ria mercury Chatsworth mine,Grassinglon, Yorkshire Severallocalities in theLakeDistrictandComw melacinnabar |  | | Journal (issue) | | ..--__ ..-_r.= _ -_ , - -- - - - - - - - - iThe y~e :R:usse/TSockty Ir'I web page is an informative...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...shown what the museum had from the Earl Ferrers' mine in Dimminsdale in North Leicestershire. I was disappointed...Subsequently I met Sir Arthur in the field at Ladywash Mine at Eyam and later had long discussions with him |  | | Journal (article/letter/editorial) | | T H E GEOLOGY OF THE DOLGELLET GOLD-BELT, NOETH WALES. By ARTHUR E. ANDREW, M.SC, F.G.S. (Continued from...of Britain, and there are many evidences of Roman mine-workings where gold must have been the principal...by Ramsay (12, p. 64) as on the banks of the Allt-y-Wenallt. Coming nearer to the present, it is well...belief of Readwin (31, p. 1) that gold was worked in Wales during the reign of Charles I. The facts on which...Royalists; Bushell could not have imported the gold into Wales, for he was hemmed in by the Parliamentary Downloaded |  | | Journal (article/letter/editorial) | | hillside is formed of Chonetes beds, but north of Nant yr ogof the succession is repeated. At Prestatyn...optical properties with chemical composition in the rhodonite-bustamite series. " A complete optical study of...of three analysed members of the rhodonite-bustamite series, together with the data available from the...cumbriense. cumbrien.se. cancellatum. cancellatum & mut. y. 46 Reports & Proceedings—Manchester Holywell District...Geological Assoc. Hope and Hawarden Area. reticulatum mut. y. reticulatum mut. /?. reticulatum mut. a & E. ornatum |  | | Journal (article/letter/editorial) | | (Sverige) Aln6 lsland, titanomagnetite, 265 Brattfors mine, Nordmarks Odalffalt, Viirmland, manganhumite, katoptrite...Gutter, Brook, Hampshire, glauconite, 373 Mill Close mine, Darley Dale, Derbyshire, corundophilite, I7I Seathwaite... 373 Turf Pits mine, Grassington, Yorkshire, spencerite, I76 Cornwall Botallack mine, digenite, I72 Carn...pseudomorphous after analcime, 245 INDEX Geevor mine, neotocite, 279 and M26 Luxulyan, luxullianite (in...apatite, hornblende, diopside, 427 South Terras mine, St. Stephen-in-Brannell, francevillite, I72 Stamps |  | | Report (edition) | | 811:aY, LO NDO N: PRII\"T ED UNDER THE AUTHORIT Y OF HIS MAJESTY'S STATIONERY OF]'ICE. To be purchased...visited the workings for manganese ore in North Wales, and their .notes have been made use of by J\fr...Survey officers in examining both the mines and the mine plans. Special mention show.d be made of Mr. Josiah...assistance m connection with the mines of North Wales: JOHN Geological Survey Office, 28, Jennyn Street...• • • ✓ • • • • ...... ..... Y-0.�J:. ••• • • • •• • ••• • .y INDEX Granite Metamorphic Aureole |  | | Journal (article/letter/editorial) | | 341-347, 1986 Tephroite and knebelite from Hijikuzu Mine , Iwate Prefecture, Japan WATCHARAPORN KEANKEO*...Tephroite and knebelite samples from the Hijikuzu mine were chemically analyzed by an elec tron microprobe...the bedded manganese ore deposits of the Hijikuzu mine in the highly metamorphosed Jurassic quartzite caused...from only four localities: Kaso mine (Yoshimura, 1939) and Kyurazawa mine (Watanabe and Kato, 1957), Tochigi...and Hakozaki Prefecture (Nambu et al ., 1966). mine, Iwate (Iwaizumi group) caused by the intrusion |  | Chukanov, N. V., Aksenov, S. M., Rastsvetaeva, R. K., Van, K. V., Belakovskiy, D. I., Pekov, I. V., Gurzhiy, V. V., Schüller, W., Ternes, B. (2015) Mendigite, Mn2Mn2MnCa(Si3O9)2, a new mineral species of the bustamite group from the Eifel volcanic region, Germany. Geology of Ore Deposits, 57 (8) 721-731 doi:10.1134/s1075701515080048 | Journal (article/letter/editorial) | | Germany. Associated minerals are sanidine, nosean, rhodonite, tephroite, magnetite, and a pyrochloregroup...paragenetic assemblage consisting of sanidine, nosean, rhodonite, tephroite, magnetite, and a pyro chlore group...mendigite and (b) bustamite from Broken Hill, New South Wales, Australia. pared with the latter, it is characterized...(Ueq) for the crystal struc ture of mendigite x y z Q Ueq M1 –0.0501(1) 0.2049(1) 0.2530(1) ...hedron, whereas at the other M sites, Ca is predomi nant. Bustamite, Mn2Ca2MnCa(Si3O9)2 and mendig ite Mn2Mn2MnCa(Si3O9)2 |  | | Journal (article/letter/editorial) | | quartz and a very little manganese silicate (rhodonite). The red layers owe their colour and laminated...position of the nearby intrusive masses of Craig-y-Castell lying in line with the hollow made by the...a short but steep scramble up the scarp of Pared y Cefn Hirenabled members to examine fine exposures...a good view towards the eastern side of the Craig-y-Castell and neighbouring intrusions, of which the...Gwynant Valley. The party then proceeded to Llyn-y-Gafr, making a short halt to examine a small exposure |
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