 | | Journal (article/letter/editorial) | | 260 Metasomatism of cherts on the north-west margin of Dartmoor, Devonshire By M. A. EL SHARKAWI1 and...Dartmoor granite in the neighbourhood of Meldon, near Okehampton, Devon. Development of biotite by contact...transfer of elements is maintained in later phases: wollastonite-diopside reaction zones may enclose cores of...blackand-white cale-flinta and are in turn replaced by wollastonite-grossular and grossular reaction zones marking...Carboniferous). They described outcrops of chert at the north-west margin of the Dartmoor granite t h a t had been |  | | Journal (article/letter/editorial) | | SKARNS FROM THE NORTH-WEST BORDER OF THE DARTMOORGRANITE,DEVONSHIRE,ENGLAND M. A. H. EL SHARKAWl...within the contact metamorphicaureole on the north-west margin of the Dartmoor granite. Tin is concentratedin...andradite of the skarns, and as malayaite in wollastonite hornfelses. Tin mineralizationwith up to 6.82%...82% SnO2, centeredon the Red-a-yen Mine at Meldon near Okehampton,lies within a much wider zone of iron-metasomatism...samehorizonwas intermittentlymineralizedfrom Fanny Mine, near Bridestowe,to RamsleyMine at Sticklepathin |  | | Journal (article/letter/editorial) | | and arsenides near the south shaft at South Terras mine, St. Stephen-in-Brannell, Cornwall. R. J. Davis...baryte, with tennantite in limestone, at Gortdrum mine, Oola, Co. Tipperary, Ireland. BM(NH) specimens...of some aspects of the geology of Cornwall and Devon' (Roy. geol. Soe. Cornwall), pp. I44-5, Anglesite...and ochreous, at West Turf Pits mine, Grassington Moor, Yorkshire. Also, at Treore mine, St. Teath, Cornwall...of some aspects of the geology of Cornwall and Devon' (Roy. geol. Soc. Cornwall), p. 249. Arthurite |  | | Journal (article/letter/editorial) | | Field Meeting in North-West Dartmoor 1-3 October 1965 Report by the Director: W. R. DEARMAN Received...A party of twenty-seven members assembled in Okehampton on the evening of 1 October, when the Director...days. THE OBJECT Saturday, 2 October Okehampton and Meldon. The day was devoted to the study of the...north of Okeharnpton and the Lower Culm inlier at Meldon. The party drove first to Knowle Quarry (594962);1...R . DEARMAN The party then returned through Okehampton to the Bude road (A30 on to B3218), turning off |  | | Report (issue) | | mineralisation in the vicinity of Belstone Consols Mine, Okehampton, Devon K E Beer, G S Kimbell and M J Bennett ...mineralisation in the vicinity of Belstone Consols Mine, Okehampton, Devon KE Beer, BSc, FIMM G S Kimbell, BSc, and...alisation in the vicinity of Belstone Consols Mine, Okehampton, Devon. Mineral Reconnaissance Programme Report...378173 BGSKEY G Fax T 060 77-6602 Murchison House, West Mains Road, Edinburgh EH9 3LA T 031-667 1000 Telex...Manager British Geological Survey Murchison House West Mains Road Edinburgh EH9 3LA • Contents: SUMMARY |  | 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. |  | | Journal (article/letter/editorial) | | Upper Culm Measures THE IGNEOUS ROCKS (a) The Meldon District (b) The Petertavy District 4. THE STRUCTURE...Unit The Petertavy Unit The Lydford Unit . The Meldon Unit . Structural Interpretation (f) The Breccia-Fault...established within the country rocks bordering the north-west corner of the Dartmoor granite mass. Upper Devonian...two to three miles wide, which borders the north-west comer of the Dartmoor granite mass in Devonshire...from South Tawton on the north to Tavistock on the west of the granite (Fig. 1). Sedgwick & Murchison (1840) |  | | Catalog/List | | Greenish, sparse, acicular micros in Penberthy Croft Mine, St 1cm £4 s AGARDITE Y Ca Cu As_O_O_H_____c_a_v_iti_e'-s-'in'-'-...215 69 3 11 Rich white crusts on matrix. Rawhide Mine, Mohave ½x½£3 _P_b_S_iO_13 _ _ _ _ _ _ _ _ _ _ _...Hornblende ALLANITE Black areas in actinolite Bastnas Mine Sweden lxl £1.20 CeYFeSiO Quite attractive blue-grey...FLUORESCENT ½ x ½ ins rock Fluorescent green Al SiO Devon England Large brown well formed dodecahedral Madagascar...Grey veins in and on matrix, some with Fallowfield mine, Ix½ ALSTONITE BaCaCO/3 Alstonite micros. Hexharn |  | | 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...Greenish , sparse, acicular micros in Penbenhy Croft Mine, St cavities in quartz_________________ Hilary Cornwall... Rich white crusts on matrix. ALAMOSITE Rawhide Mine, Mohave Ixl £9 'A x A £3 1 xA Pb SiO/3_____________...Feldspar_____________ Black areas in actinolite Basinas Mine Sweden 1x1 £1.20 ALLANITE 9 Ce Y Fe SiO__________ |  | | Book | | ^MINERALS, ROCKS and GEMSTONES \in Cornwall and Devon |'; '’i '■-■ ,, t Cedric Rogers A Collector’s...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*...WHERE. Beaches Cliffs and Caves. River Beds etc. Mine Dumps Quarries St. Just - Botallack - Pendeen Camborne...Lizard .. North and Central Cornwall East Cornwall Devon 26 27 28 29 30 31 32 33 34 35 MAPS 36 39 APPENDIX |  | | Catalog/List | | pinkish fine grained mass in Calcite.(Dark Star Mine,Ravalli County, Montana USA) 1 x 14 £2.50 1x1 £4...guite rich black masses in matrix (Union Carbide Mine, Wilson Springs Garland County, Arkansas USA) 1x1...fairly sparse, green crusts on matrix. (San Miguel Mine Moctezuma Mexico) 1cm piece £ 5 5mm £3 WITH UNUSUAL...CO/3 0 Quite rich yellow crusts on matrix. (Outpost Mine, San Domingo Wash Maricopa County Arizona) Ixliins...MINERAL !I dark red micro's on matrix. (Getchell Mine,Humboldt Co . Nevada USA) 5mm £4 up to 1.5cm £7 |  | | Journal (article/letter/editorial) | | East Iceland: beudantite, 431 Pengenna (Trewethen) mine, St. Kew: pitchsbone, oligoclase, 587 Sellatur...WALES Adamite, hiibnerite, xliv Billingham anhydrite mine, Durham: aph~hitalite(?), arsenopyrite(?), epsomite...cornubite, 1 Treburland mine, Altarnun: genthelvite, molybdenite, 921 Treore mine, St. Teath: beudantite...jamesonite, mimetite, scorodite, stibnite, 431 Tretoil mine, Lanivet: danalite, garnet, ilvaite, 921 Wheal Betsy...bindheimite, 664 Geevor mine, Pendeen, St. Just-inPenwith: uraninite, 654 Levant mine, St. Just-in-Penwith: |  | | Catalog/List | | EOCKS AHD MINERALS Ho U available. NEW STOCK Devon and Cornwall pages 8 S 3 : ALLOPHANE, ARTHURITE...pinkish fine grained mass in Calcite.(Dark Star Mine,Ravalli County, Montana USA) 1 x H £2.50 1x1 £4...and Be Mica white cleavages in Muscovite. (Harding Mine,Taos County, New Mexico) 1x1 £3.50 1x2 £7 097 CHLOANTHITE...MINERAL !! dark red micro's on matrix. (Getchell Mine,Humboldt Co . Nevada USA) 5mm £4 151 LEUCOSPHENITE...fairly sparse, green crusts on matrix. (San Miguel Mine Moctezuma Mexico) 1cm piece £ 5 5mm £3 WITH U |  | | Report (issue) | | tephroite, calcite, glaucochroite, johannsenite, wollastonite, diopside, Distribution: \Type" material, from...and in the Harstigen mine, near Persberg, VÄarmland, Sweden. At the Treburland mine, Altarnun, Cornwall...Cornwall, and in the Railroad quarry, Meldon, near Okehampton, Devon, England. At Camas Malag, Isle of Skye,... and Schio, Vicenza, Italy. From the N'Chwaning mine, near Kuruman, Cape Province, South Africa. In Australia...the Obori mine, Yamagata Prefecture; the Noda-Tamagawa mine, Iwate Prefecture; the Kanoiri mine, Tochigi |  | | Journal (issue) | | Some aspects of Engineering Geology in South West England Chairman's Introduction ... ... ... 356...Engineering geology in reservoir construction in South West England. By J. L. Knill. ... ... ... 359 The influence...weathering on the layout of quarries in South West England. By W. R. Dearman and P. G. Fookes. ... ...... 372 Some examples of cliff failure in S.W. England. By H. M. de Freitas. ... ... ... ... 388 Geological...problems in the china clay industry of South West England. By M. J. Ripley. ... ... 405 The geological |  | | Journal (issue) | | analysis of small quantities of tourmaline from S.W. England ; a preliminary report.” 76. *Dr. C. S. Exley :...South Devon.” 98. *Dr. W. R. Dearman : “Bismuth and Molybdenite from Meldon Quarry, near Okehampton, Devon...geology of Devon and Cornwall”. Dr. W. R. Dearman “Map showing geological research in S.W. England - 1965”...curves for soil clays from A- Sweden, B Scotland, C- West Africa. and the last category may indeed be conveniently...analysis of small quantities of tourmaline from S.W. England ; a preliminary report : by G. M. Power. In order |  | | Catalog/List | | x i £5 Rich wh ite crusts on matrix. Rawhide Mine, Moh ave County, ½ x ½ Arizona, U.S.A £3 Kragero...rful , 18 miles NNW of St I cm £6 Ives. Cornwall. England No location details !cm £4 Colo urless to yellow...Bastnas Mine Sweden Jx2 £6 2 x2 £1.20 2x2 £1 2 Ix ! £4 l x2 £8 New East Wheal Russell mine, Devon ,Eng...near Creston . Wyoming ,U.S. A Newhaven Sussex, England l x l £3 l x2 £5 While crystals well covering...£ 16 2x3 £25 l x l £3 San Jose Mine, Oruro, Bolivia Benallt Mine,Lleyn ,Wales l x2 £1.5 0 6x6mm £3 |  | | Journal (article/letter/editorial) | | 1961 No. 255 Beryllium minerals in Cornwall and Devon: helvine, genthelvite, and danalite. By ARTHUR W...former, three occurrences in Cornwall and one in Devon, and of the latter, one occurrence in Cornwall,...impossible to assign the specimen to a particular mine, especially as, at the time it was collected, there...helv~ne, genthelvite, and danalite ~n Cornwall and Devon. The two large specimens of danalite in the British...number of localities and areas ill Cornwall and Devon where these minerals might be discovered; it also |  | | Report (edition) | | British Regional Geology I * South-West England r * FOURTH EDITION e ■ - O ” ..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 |  | | Catalog/List | | ARSENIOSIDERITE orange brown crusts on Hidalgoite (Gold Hill Mine Tooele County Utah USA) lxl f2.5O lx2 f5.OO 2x2...purple-brown crystalline masses (Colebrook Hill Mine,Roseberry, Tasmania) lxl fl.5O lx2 f3 2x2 f6.OO...BOKITE black to dark brown masses (Monumnt No 2 Mine Apache County 1/2 x 1/2 f3.5O lxl f5 C266 DEFERNITE...C267 BUSTAMITE excellent rich brown near Okehampton Devon) This is lxl 6Op lx2 fl.2O C268 CHALCOSTIBITE...covering location. (Ramsley Mine lxl fl.5O lx2 f3 of glassy micros Devon) 2x2 f6 C27O CHALCOPYRITE |  | | 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 | | I Byways, 20 Burstead Close, Cobham, Surrey, England KTll 2NL Phone 01932 862340 EMAIL richard.tayler@minerals...£10 2x2 £15 Ix! £3 lx2 £6 I · 88 ADAMITE Ojuela Mine, Mapimi, Mexico Colourless to yellow small crystals...£10 2x3 £15 Na Ca SiO F 7fJ 7 ■ AJOITE Christmas Mine, Gila County, Arizona USA Blue veinlets in matrix...5cm £4 no/2 feldspar 37 ANCYLITE Ce Dark Star Mine,Ravalli County, Montana U.S.A Rich pinkish fine...Sb 501 ALLOPHANE New East Wheal Russell mine, Devon ,England grey bleby small botryoidal with possible |  | | Journal (issue) | | SUSSEX MINERAL & LAPIDARY SOCIETY www.smls.org .uk ***tt1<**1rlrlt-***_*_irlrlf'lrlr1rlt'frlrlt***-...Secretary: Colin Brough 1 William Allen Lane LINDFIELD West Sussex RH16 2SA Peter Moore Royal Russell School...15, photo 2 was intended to be a photo of Trevor Devon posing by the road sign of Treves (see photo by...France pictorially. Millau is situated 100 km north west of the Mediterranean coast and is consequently guaranteed...'tourist' photo of Trevor Devon standing in front of the 'Treves' (a zince mine tip) village sign - see |  | | Journal (issue) | | ... 219 SYMPOSIUM. The structure of South West England A general view of the structure of Cornubia... north-west of Dartmoor. By E. B. Selwood. ... ... ... ... 237 The Structures of Mid-Devon and North...of North Devon. By S. Simpson. 249 Form and structure of the granites of South West England. By M. Stone... ... En-echelon veins in folds near Hartland, Devon (Abstract). By P. L. Hancock. ... ... ... 264 Early...Hobson. ... 264 Deformation analysis on the North Devon coast (Abstract). By K. Jeffery. ... ... ... 265 | | | Report (edition) | | British Geological Survey Front cover: Bull Point, Devon (For full explanation see p. ix) •• ll On 1...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 Carbonif�rous...as oil companies turn their attention to the seas west of Britain, so attention is increasingly focused...age-determinations of rocks of south-west . . . . . . . Facing England 1 112 List of Geological Survey |
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