 | | Journal (article/letter/editorial) | | niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire OLEG VON KNORRING AND ERIC CONDLIFFE...A number of rare-element minerals from the Meldon aplite are described, e.g. native arsenic and antimony...columbite-tantalite series. THE Meldon aplite, near Okehampton, Devon (grid ref. SX 573 927), is a highly...north-west of the main Dartmoor granite (Worth, 1920). This lithium- and fluorine-rich aplite, together...1973, 1976) have given admirable accounts of the Meldon axinite, topaz, Li-A1 micas and lithian tourmaline |  | | Journal (article/letter/editorial) | | massive from a vein in a dolerite sill at Embleton quarry, near Cockermouth, Cumberland. A. W. G. Kingsbury...of some aspects of the geology of Cornwall and Devon' (Roy. geol. Soe. Cornwall), pp. I44-5, Anglesite...Orange-brown cleavages on vein quartz, at Merehead quarry, near Shepton Mallet, Somerset. Specimen found...AgF%(SO4XOH)6 Yellow, micaceous, and ochreous, at West Turf Pits mine, Grassington Moor, Yorkshire. Also...of some aspects of the geology of Cornwall and Devon' (Roy. geol. Soc. Cornwall), p. 249. Arthurite |  | | Journal (article/letter/editorial) | | of zircons from the Cornubian Batholith of SW England and comparison with zircons from other European...Natural History Museum, Cromwell Road, London SW7 5BD, UK Camborne School of Mines, College of Engineering...Exeter, Penryn Campus, Penryn, Cornwall TR10 9FE, UK [Received 13 March 2015; Accepted 17 December 2015;...of the late-Variscan Cornubian Batholith in SW England was analysed for W, P, As, Nb, Ta, Si, Ti, Zr,...topaz granites from the St. Austell Pluton, Meldon Aplite and Megiliggar Rocks are slightly enriched in |  | | Journal (article/letter/editorial) | | 38, PP. I79-85 Feldspars from the Meldon aplite, Devonshire, England M. NAWAZ CHAUDHRY Department of Geology...Geology, University of the Panjab, Lahore, West Pakistan SUMMARY. Chemical analyses of nine K-feldspars...diagrammatically. THE Meldon aplite, near Okehampton, Devonshire, is a soda-lithia aplite dyke about 2o-5 m...m in thickness, occurring I km north-west of the main Dartmoor granite. Albite, quartz, mica, and K-feldspar...minerals and elbaite, topaz, fluorite, apatite, and petalite are the accessory minerals of the aplite. The aplite |  | | Journal (article/letter/editorial) | | 7 0 , VOL. 3 7 , NO. 2 9 0 Topaz from the Meldon aplite, Devonshire M. NAWAZ CHAUDHRY Department of...of Geology, University of the Panjab, Lahore, West Pakistan and R. A. HOWIE Department of Geology, King's... THE Meldon aplite, near Okehampton, Devonshire, England, is a sodium- and lithium-rich aplite dyke about...minerals, the aplite also contains accessory topaz, elbaite, apatite, and petalite. The main aplite dyke is...important amounts of topaz whereas others contain elbaite. Chemistry. The topazes were separated from the |  | | Journal (article/letter/editorial) | | 747--5I Lithium tourmalines from the Meldon aplite, Devonshire, England M. N. CHAUDHRY Department of Geology...composition is also discussed. THE Meldon aplite, Devonshire, is a soda-lithia aplite dyke about 6o to 8o ft in...three-quarters of a mile north-west of the main Dartmoor granite (Worth, 192o). The aplite has been cut and metasomatized...and associated or contemporaneously metasomatized aplite contains pink tourmaline (rubellite). Four samples...M2oo, and MI7 belong to the rubellite variety of elbaite (MI7 being paler pink than the others) and three |  | | Report (issue) | | eosphorite, morinite, väyrynenite, lithiophilite, elbaite, pollucite, petalite, lepidolite, albite, orthoclase...Sugarloaf Mountain, near Stoneham, at the Dunton quarry and the Bell Pit, Newry, Oxford Co., and other...on Rånö Island, Sweden. In England, in the Meldon aplite, Okehampton, Devonshire. Large crystals from |  | | Journal (issue) | | regional geochemical reconnaissance of South-west England. By P. L. Lowenstein and R. J. Howarth. ...... 478 Muscovite (‘Gilbertite’) from the Meldon aplite. By M. Nawaz Chaudhry and R. A. Howie. ... ....Geophysical surveys over two ore-bodies near Tavistock, Devon. By E. M. Durrance. ... ... ... 495 The sequence...... 521 Correlation of fold phases in S.W. England. By David J. Sanderson. ... ... ... ... 525 ...Pleistocene section west of Tregunna House. By B. B. Clarke. ... ... ... 551 Loess in Devon. By T. R. Harrod |  | | Book | | Igneous Rocks of South-West England THE GEOLOGICAL CONSERVATION REVIEW SERIES The comparatively small...and M. C. Gyopari S. Igneous Rocks of South-West England P. A. Floyd, C. S. Exley and M. T. Styles 6...Thames D. R. Bridgland Igneous Rocks of South-West England P. A. Floyd Department of Geology, University...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 |  | | Book | | PO Box 315. Harpenden. Hertfordshire AL5 2ZD. England Telephone: +44 (0)1582 762413 Fax: +44 (0)870 055...production of e0pper. the mining areas of Cornwall and Devon became important producers of b th tin and copp...1\llaga::i11e, on minerals from localities in Cornwall. Devon. Cumbria and Yorkshire. He was renowned for his...Meldonaplitequany.nr Okehampton, Devon (leucophanite)' Meldonaplitequarry,nrOkehampton, Devon PottsGillmine...St Kew,Cornwall; Shallowfield Bridge,SouthMolton,Devon Tynebottom mine,Alston.CUm~ria mercury Chatsworth |  | | Journal (article/letter/editorial) | | Types of distribution of the minerals of the Meldon Aplite, Devonshire M. N. CHAUDHRY AND A. MAHMOOD SYNOPSIS...modal analysis data of eight minerals of the Meldon aplite is made with a view to determining their distribution...DIETKIBt~IO~ OF T ~ THE MELDON APLITEt ~ E R A L S OF DEVONSHIRE~ ENGLAND M.N. Chaudhr~ and A. M a...a h m ~ d THE Meldon aplite is a sodium and liZhiu~rleh aplite dyke a b ~ t 20 to 25 m thick add Thpee...d veins, goweveP, the in~rusion is essentially aplite ~ d The v~iability in its composition and E~aim-size |  | | Journal (article/letter/editorial) | | Lithium-aluminium micas from the Meldon aplite, Devonshire, England M. NAWAZ CHAUDHRY ~ AND R. A. HOWIE...specific gravities. THE Meldon aplite, Devonshire, is a soda-lithia-rich aplite dyke about 20 to 25 m in...in thickness, occurring I km north-west of the main Dartmoor granite (Worth, I920). Albite, quartz, lithium-aluminium...minerals and elbaite, topaz, fluorite, apatite, and petalite occur as accessory minerals of the aplite. Rarely...joints and fractures. The aplite is divided into three types. The 'blue aplite' is a light blue to azure |  | | Journal (issue) | | Science, Plymouth Polytechnic, Plymouth, PL4 8AA, Devon. PROCEEDINGS OF THE USSHER SOCIETY VOLUME THREE............. 209 Fluid inclusion studies in SW. England. By D. H. M. Alderton............................geochemical division of the Namurian shales of Devon and Cornwall and its significance. By Stephen McCourt... 235 Iron-manganese mineralization at Merehead Quarry, eastern Mendips (Abstract). By C. Alabaster.....suites in the post-Armorican formations of SW. England (Abstract). By M. E. Cosgrove................. |  | | Journal (article/letter/editorial) | | Scotland; 116 244 H. G. M A C P H E R S O N from England (75 of which are from Cornwall); 28 from Ireland;...emerges. Thus, of the 130 species, 64 are from England (48 from Cornwall); 35 from Scotland; 19 from Ireland;...regional lists as, for example, for SW England, Pennines and northern England, Wales, Ireland, Scotland, etc...(1892) A Handbook to the Mineralogy of Cornwall and Devon. London. Dana, E. S. (1892) The System of Mineralogy... P. S. (1982) The State and Status of Geology in UK Museums. London: Geol. Soc., Misc. Paper No. 13. |  | | Journal (article/letter/editorial) | | Earth Sciences, The University, Leeds LS2 9JT, England. R. T6rnroos, The Geological Survey of Finland...Specimen Nos. 1--8 are representatives of the elbaite-schorl series and Nos. 9-10 of the dravite-uvite-...he mineral belongs to the iron-rich end of the elbaite-schorl series. Madagascar Mozambique The granite...shore of Madagascar, west of the town Fort Dauphin. The mine :onsists of a quarry in a pyrcxenite 110...be distinguished: X Na Na Na Na Na Ca Ca Ca Ca Elbaite Dravite Schorl Tsilaisite Buergerite Liddicoatite |  | | Journal (issue) | | Ovington, UK NJ Elton, St Austell, U.K. N.J. Fortey, Keyworth, U.K. RA. Howie, Matlock, UK RJ. King...Media, (A division of St. Ives Group), Leeds, England. Published by The Russell Society. Registered Charity...Proustite (1.0mm) with barite and tennantite. Dolyhir quarry, Old Radnor, Powys, Wales, October 2004. Collection:...Part 2, 2005 PAPERS The mineralogy of Newhurst quarry, Shepshed, Leicestershire Frank Ince The occurrence...including koninckite and planerite from Grouse Lodge quarry, Shanagolden, Co. Limerick Stephen Moreton and |  | | Book | | John Hall Printed by Action Press, Burgess Hill, West Sussex Summer2022 TO A VERY SPECIAL SUSSEX MINERAL...Critchley 48 52 Julie d'Ablaing (nee Pearce) 54 Trevor Devon 58 Catherine Foley 60 Don Ford 66 David and late...increasingly ambitious. Collecting started in Southern England, Cornwall and Wales, and gradually extended to...other local mineral clubs as well as the national UK mineral societies: the British Micromount Society...addition, members would visit many Mineral Shows in the UK, particularly the Oxford, Bakewell and Haywards Heath |  | | Journal (article/letter/editorial) | | Types of distribution of the minerals of the Meldon Aplite, Devonshire: Addenda THE four figures in the...C A T I O N S IO5I 50== PETALITE FLUORITE ELBAITE ORTHOCLASE 20 I I I I ~ ~ m o ~ m~8 . 8 o |  | | Journal (article/letter/editorial) | | Maine Bennett quarry, Buckfield, Maine Bennett quarry, Buckfield, Maine Bennett quarry, Buckfield, Maine...Mountain, Rumford, Maine Berry-Havey quarry, Auburn, Maine Greenlaw quarry, Auburn, Maine Chandler mine, Raymond...petalite subtype, L - lepidolite subtype, E - elbaite subtype, A - amblygooite subtype, N - NYF class...subtype, triangles-lepidolite subtype, diamonds-elbaite subtype, stars-miscellaneous (includes amblygonite-...subtype micas. Few samples from the amblygonite and elbaite subtype and amazonite-bearing pegmatites were available |  | | Journal (article/letter/editorial) | | that contain beryl, columbite-group minerals, elbaite, and Li-phosphates and Li-aluminosilicates. Contrary...the Rumford area pegmatites. Fig. 1. Map of New England region showing the location of the Black Mountain...that occasionally host economic quantities of gem elbaite or beryl. The accessory mineralogy and trace element...Mountain pegmatite 819 accessory schorl and elbaite. Also found within the ‘‘cleavelandite’’ are occasional...locally surrounds the microcline. Pink and yellow elbaite, zircon and CGM are rarely present. The third intermediate |  | | Journal (article/letter/editorial) | | solved independently by Pauling (1928) and Alston and West (1928) and later refined by Ribbe and Gibbs (1971)...locality); 8. tin granites and greisens of Cornwall, England, and France; 9. Erzgebirge district, Saxony, Germany;...fissures. Topaz aplites observed in Australia and England (Chaudhry and Howie ]970; Johnston and Chappell...occasional accessory zinnwaldite, lepidolite, elbaite, apatite, or petalite. The topaz grains range in...Ta-rich Nb, Y, F-rich Examples St. Austell, England; Erzgebirge, Germany; East Kernptville, Nova Scotia |  | | Journal (article/letter/editorial) | | granitic pegmatites, maine Fig. 1. Map of the New England region showing the location of the Oxford and Brunswick...fractionated simple to berylbearing pegmatites south and west of the batholith and moderately fractionated beryl...pegmatite of southern California (Foord 1976), Meldon, U.K. (von Knorring & Condliffe 1984), Brown Derby...lepidolite-subtype category (such as lepidolite, elbaite and spessartine) show very low values of Fe/Mn...group, followed sequentially by Fe-rich elbaite, Fe-poor elbaite and, in some dikes, culminating in rossmanite |  | Černý, Petr, Chapman, Ron, Ferreira, Karen, Smeds, Sten-Anders (2004) Geochemistry of oxide minerals of Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite trend. American Mineralogist, 89 (4) 505-518 doi:10.2138/am-2004-0405 | Journal (article/letter/editorial) | | replacement. The evidence available from sketches of the quarry exposures, photographs, and detailed descriptions...+ quartz intergrowths), and minor lepidolite, elbaite, fluorapatite, and beryl. The coremargin zone (5)...K-feldspar, albite, and lepidolite, and accessory elbaite, beryl, fluorapatite, montebrasite, and other phosphates...widely dispersed through most of the pegmatite. Elbaite, fluorapatite, lithiophilite, oxide minerals of...pegmatites of southern California (Foord 1976), the Meldon “aplite” (Knorring and Condliffe 1984), the Jihlava |  | | Journal (article/letter/editorial) | | oscillatory zoning of columbite from the Meldon aplite, Devonshire, England, and gave several analyses of the...montebrasite, iepidolite, cassiterite, schorl-elbaite and zircon. Of the Nb-Ta minerals, microlite and...Mineralogy and petrogenesis of layered pegmatite-aplite dikes in the Mesa Grande district, San Diego County...niobium-mourn and other rare&ement mine& in the Meldon aplite, Devonshire. Mineral. Msg. 48,443448. LAHTIS |  | | Report (issue) | | and grl1t1r1dv-.'aters '2 l,itl1ium in South-West England 3 Geology of the St Austell c;r,tnite 7 The...shEngland 5 The gecJ!ogy cif the St Austell Granite 8 The...uthors J . R . Hawkes, BSl�, PhD 1 9 Jenner Drive , West End , Woking, Surrey G U 24 9HU P . M . Harris,...l:e11t I .i (sa111ples frtln1 the l'V1 l'.lric>rl Aplite D 1,ke ) ; ari d 1 1 1 pfJ111 Li ( a r11i11('.•...Pc1nds [SX 5450 9003 ] <>n Sourton 'l'or tquarry [SX 568 920] situated just to the nort h-east of |
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Meldon Aplite Quarry, Okehampton Hamlets, West Devon, Devon, England, UK