 | | Journal (article/letter/editorial) | | note on the occurrence of columbite in the Meldon aplite, Devonshire. By OLEG YON K~ORRING, M.Sc. Department...South Devon in April 1951, material was collected from the Meldon aplite quarry near Okehampton, to the...the north-west of the Dartmoor granite, which on examination has proved to contain the mineral columbite...minerals have previously been recorded from the Meldon aplite quarryfl 2 They are partly found as accessory...accessory constituents in the main fine-grained aplite rock consisting of orthoclase, albite, and quartz, or |  | | Journal (article/letter/editorial) | | RYBACK 42 Bell Road, Sittingbourne, Kent ME10 4EB, England AND PETER C . T A N D Y Department of Mineralogy...British Museum (Natural History), London SW7 5BD, England T n E supplementary lists of British Isles minerals...recently. The classic minerals of Cornwall and Devon are splendidly described by Embrey and Symes (1987)...known from the British Isles, and 580 or so from England. Of these latter, about 116 are listed here as...product of triphylite and possibly triplite in pegmatite at Megiliggar Rocks, Tremearne, Breage, Cornwall; |  | | Journal (article/letter/editorial) | | spodumene in the Meldon Aplite, Devon ASPECTS of the mineralogy of the Meldon aplite fiave been reported...coarser portions of the aplite and more commonly in pegmatite veins in the aplite. Similarly, Edmonds et...veins and forming disseminations in the surrounding aplite. Chaudhry and M a h m o o d (1979) noted the petalite...although tending to be most a b u n d a n t in the pegmatite-rich areas, and primary orthoclase may have been...been replaced by petalite. Spodumene at Meldon receives only two notices; the description by Kingsbury |  | | 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) | | 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...together with associated pegmatite veinlets and lenses, is of considerable geochemical interest from its unique |  | | Journal (article/letter/editorial) | | GRANITES AND SOME ASSOCIATED ROCKS FROM SOUTHWEST ENGLAND I. A. MILLER AND P. A. MOHR New isotopic age determinations...determinations on all the granites of southwest England are presented and discussed in relation to the...INTRODUCTION The Hercynian granites of southwest England have in part been the subject of potassiumargon...the period of the Hercynian orogeny in southwest England in relation to other parts of Britain and Europe...concordant with the tectonic grain of southwest England, and six major domes have risen froin it to form |  | | Journal (article/letter/editorial) | | AND DEVON: C.J. MOON Moon, C.J. 2018. Geochemistry of Caesium and Fluoride in Cornwall and Devon: Evidence...Evidence from TellusSW. Geoscience in South-West England, 14, 150ā160. The TellusSW geochemical survey...soils and water as well as fluoride in waters. Devon and Cornwall are one of the most enriched areas...reflects Cs concentration in fine-grained granite of west Dartmoor, late stage Li-F rich granites in St Austell...mineralisation as well as forming a broad high in mid-Devon, spatially related to the occurrence of lamprophyres |  | | Catalog/List | | FLUORESCENT Ā½ x Ā½ ins rock Fluorescent green Al SiO Devon England Large brown well formed dodecahedral Madagascar...hard white sphere shaped nodule. Newhaven Sussex, England lxlins S0p ALUMINITE Al SO/4 ALUMINOTSCHERMAKITE...- - - AMAZONITE Pure green cleavage Landsverlc quarry, Evje, Norway lxl S0p ALAMOSITE fcLp 10 g:...PbAgSbS lx2 S0p 2x2 Ā£1 2x3 Ā£I .SO Staffordshire England Rich white to faintly blue masses ANHYDRITE CaSO...with Chrysotile, pale grey-green County Bridge Quarry,Lizard ,Cornwall MgFeSiO massive. Minas Gerias |  | | Book | | ^MINERALS, ROCKS and GEMSTONES \in Cornwall and Devon |'; 'āi 'ā -ā ,, t Cedric Rogers A Collectorās...MINERALS, ROCKS AND GEMSTONES in Cornwall and Devon Cedric Rogers i D. BRADFORD BARTON Truro LTD... MINERALISED ILPMACOMar AREAS of CORNWALL & DEVON Main. Concentrations of mints. (has Hine. fnaxt*...Lizard .. North and Central Cornwall East Cornwall Devon 26 27 28 29 30 31 32 33 34 35 MAPS 36 39 APPENDIX...experienced collector who is unfamiliar with Cornwall and Devon should find helpful. There has been no attempt to |  | | Journal (article/letter/editorial) | | azurite, olivenite, 428; coronadite, 343 Embleton quarry, Cockermouth: alunite, dickite, thaumasite, zunyite...pharmacosiderite, plumbojarosite, seorodite, 430 Devon Bedford United mines, Tavistock: eornubite, 2 Ford...scheelite, 921 Meldon aplite quarry, Okehampton: bavenite, 577 Meldon limestone quarry, Okehampton: scheelite...Sticklepath, Okehampton: scheelite, lxxviii, 921 Red-a-yen Brook mine, Meldon, Okehampton: helvine, 1511ingite...chondrodite, humite, 910 Chiapaval, South Harris: pegmatite with muscovite, microcline, columbite, monazite |  | | Catalog/List | | Spinel crystals from madgascar.Mottramite from England .Cut and polished Labradorite.Tacharanite and Tobermorite...ingots on a ship wreck in 1885 St Ives. Cornwall. England Rich fine grained black crystalline mass Mount...501 A x A ins rock Fluorescent green Al SiO Devon England FLUORESCENT Large brown well formed dodecahedral..._______ Ba Ca 00/3__________ Newhaven Sussex, England lxlins50p 1x2 Ā£1 Pure hard white sphere shaped...Arizona Pure green cleavage AMAZONITE Landsverk quarry, Evje, Norway Ixl 50p lx2Ā£l 11 felspar group____________ |  | | 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 |  | Edmons, E. A., Wright, J. E., Beer, K. E., Hawkes, J. R., Williams, M., Freshney, E. C., Fenning, P. J. (1968) Geology of the Country around Okehampton (Explanation of One-inch Geological Sheet 324, New Series) Memoirs of the Geological Survey. Institute of Geological Sciences | Report (issue) | | SURVEY OF GREAT BRITAIN ENGLAND AND WALES Geology of the Country around OKEHAMPTON ( Explanation of One-inch...Beche. His 'Report on the Geology of Cornwall, Devon, and West Somerset' (1839) was the first memoir of the...other early Geological Survey maps of south-west England, are undated, but it is believed that they were...(1956), 'The Metalliferous Mining Region of South-West England'. The district formed part of the area in which...geophysical methods. In 1962 the newly formed South-West England field unit, successively under Dr. F. B. A. |  | | 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 |  | | Journal (article/letter/editorial) | | ium mica granite (Tre gonning), leucogranite and aplite. Lithium -mica gra nite is believed to have been...and the evidence for several genera tions of aplite-pegmatite bodies. Department of Geology. The University...finergrained than the typical granites of south-west England, but they do not recognise the Tregonning 155.../ -, '/ / I Godolphin Hil l, ,'/ I ā¢ ā¢ '-Quarry " :' / F/ , / -, Balwest. / ::::-==-,~= , / -...Roof Complex. The contact dips 12-15Ā° to the west-south-west. The dominant cleavage in the pelites, formerly |  | | Journal (article/letter/editorial) | | . . . . . . . . . . . . . . . . . . T h e Meldon Aplite . . . . . . . . . . . . . . . . . . . . . ....Geology of (2) (3) (4) (5) (6) (7) (8) Cornwall, Devon, & W e s t S o m e r s e t ' p. 501. 1888. S m J...1895. R. N. WO~T~, ' Notes on the Geology of Okehampton ' Trans. Devonshire Assoc. vol. xxvii, p. 306...notes comprises as much o[ the watershed of the West Okement and the Redaven as lies between the London...Railway-line on the noldh and, on the south, the 'Roof of Devon,' the Yes Tor-High Wilhays ridge; practically it |  | | Catalog/List | | hard white sphere shaped nodule. Newhaven Sussex, England 12 ALUJ\JINITE lxlins50p lx2Ā£I 2x2Ā£2.S0 Al SO/4...--- Ā· - Ā· Ā· Ā·Ā·Ā· _ 2x3 Ā£I .SO 2x2Ā£1 Staffordshire England lx2 S0p Rich white to faintly blue masses 23 Al'\HYDRITE... _ . Pure black mica plate new Analysis , Saga Quarry. Tvedalcn near Ix I Ā£3 I x2 Ā£6 2x2 Ā£ 12 7 AN!lilTE...AXINJTE Very rich light brown massive with some Meldon Aplite Quany, lx240p 2x280 2x3 Ā£1.50 3x4 Ā£3 Ca Fe Al...rich white masses intergrown with Weymouth,Dorset,England JxJ 60p lx2 2x2 2x3 Ā£4 46 BASALUMINITE AISO/4 OH |  | | Catalog/List | | CO/3 OH blue micro crystals on rock. (Greystones Quarry,Lezant,Cornwall) Ā£2.00 lx H Ā£3.50 2 076 CALEDONITE...Quartz with micro spots of Native Copper. (Kingston Quarry,Cornwall) 1x1 Ā£2 553 TETRAHEDERITE (Cu Fe) Sb S...cleavages with cerussite and or Pyrolusite (Merehead Quarry, Mendips,Somerset) H x B Ā£2 269 MENDIPITE Pb/3...CORKITE Pb Fe PO/4 SO/4 This is a rare mineral for England, deep yellow radiations in goethite (Iron Crag...metallic fibrous on' 2cm white dolomite. ' (Lengenbach Quarry,Binn Valley Switzerland) Ā£4.50 163 GALENA Lead |  | | Journal (issue) | | Science, Plymouth Polytechnic, Plymouth, PL4 8AA, Devon. PROCEEDINGS OF THE USSHER SOCIETY VOLUME FOUR...Co., Kyrtonia Press, 115 High Street, Crediton, Devon CONTENTS CHAIRMAN'S REPORT......................formation of small-scale tectonic structures in south Devon (Abstract). By D.M. Hobson........................of the late Triassic - early Jurassic sequence in west Somerset. By G. Warrington.......................... 157 The Variscan granites of south-west England: a progress report. By J. R. Hawkes and J. Dangerfield |  | | Catalog/List | | C267 BUSTAMITE excellent rich brown near Okehampton Devon) This is lxl 6Op lx2 fl.2O C268 CHALCOSTIBITE...(Ramsley Mine lxl fl.5O lx2 f3 of glassy micros Devon) 2x2 f6 C27O CHALCOPYRITE good crystals Also Quartz...mineral has only been found in The Mendips. (Merehead Quarry Mendips Somerset) f3.50 C273 COLORADOITE Mine...metallic Colorado U.S.A) lx single each 2 9 (Meldon B.R.Quarry some years ago. 2x4 f5 on matrix. ...areas in matrix XRD) A W matrix (Bessie Tyube Quarry on Basalt.(Island "B" - C278 GOETHITE really |  | | Report (edition) | | British Regional Geology I * South-West England r * FOURTH EDITION e ā - O ā ..y 1835 Geological...British Geological Survey Front cover: Bull Point, Devon (For full explanation see p. ix) NATURAL ENVIRONMENT...and Mr. G. Bisson (District Geologist, South-West England), as well as Professor W. R. Dearman and the...advances in our knowledge of the geology of south-west England. Most of the great expanse of Carboniferous...as oil companies turn their attention to the seas west of Britain, so attention is increasingly focused |  | | Journal (volume) | | non-member subscription rates for this volume are: UK Ā£13 (including P&P) and Overseas Ā£15 (including P&P)...proudly displaying a copy of Minerals of Northern England. Roy Starkey photograph. Journal of the Russell...Herderite-hydroxylherderite series minerals from Chywoon Quarry, Cornwall Tom F. Cotterell, Neil Hubbard and David...herderite-hydroxylherderite series minerals, from Chywoon Quarry, in Cornwall. There are, however, four other Cornish...cross the Irish Sea and travel to the far south-west of the Emerald Isle, to Ballybunnion, in County |  | | 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...accessory minerals of the aplite. The aplite is divided into three types: the 'blue aplite', a marginally chilled |  | | Catalog/List | | rful , 18 miles NNW of St I cm Ā£6 Ives. Cornwall. England No location details !cm Ā£4 Colo urless to yellow...Ix ! Ā£4 l x2 Ā£8 New East Wheal Russell mine, Devon ,Eng land Madagascar Ā½ xĀ½ Ā£2.50 linsĀ£4 I xĀ½ Ā£4...near Creston . Wyoming ,U.S. A Newhaven Sussex, England l x l Ā£3 l x2 Ā£5 While crystals well covering...paper available. Rich grey crystalline mass. Saga Quarry, Tvedalen near Larv ik, Norway Ix I Ā£1.50 Ix I...Chrysotile. pale grey-green mass ive. County Bri dge Quarry,Lizard ,Cornwall Jx I Ā£ I I x2 Ā£2 Loch Scridain |  | | Journal (issue) | | regional geochemical reconnaissance of South-west England. By P. L. Lowenstein and R. J. Howarth. ...... 478 Muscovite (āGilbertiteā) 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 |
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