 | | 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...Finally, veins with datolite-diopside, datolite-grossular-idocrase, and datolite-grossular-zeolite assemblages...Carboniferous). They described outcrops of chert at the north-west margin of the Dartmoor granite t h a t had been...0 ) c :::::: ::::::::::::::::::::::: ~l~a-v~ Mine : : : : : : : : : : : : : : : : : : : : : : : : |  | | 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...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...Geochemical prospecting(4) has shownrecentlythat at Meldon the same deposits havea lenticularshapeconfinedwithinthe |  | | 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 |  | | 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 |  | | Catalog/List | | beforehand. NOVEMBER/DECEMBER 1995 1. ADAMITE. Ojuela Mine, Mapimi, Durango, Mexico. V-shaped cavity in limonitic...5. APATITE (VAR FRANCOLITE). Simms Lode, Geevor Mine, St Just, Cornwall. Cellular matrix lined with lustrous...60x50x45mm. £22. 7. AURICHALCITE AND HEMIMORPHITE. 79 Mine, Hayden, Arizona, USA. A 50x20nan cavity in veinstone...£20. 8. AUTUNITE. Marivale Quarry, Dartmoor, Devon, A joint plane on granite about half covered with...and LW U.V. 70x60x25mm. £12. 9. AZURITE. West Caradon Mine, St Clear, Cornwall, in veinstone matrix. |  | | 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) |  | | 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 |  | | Journal (volume) | | plumbogummite with yellow pyromorphite. Roughton Gill Mine, Caldbeck Fells, Cumbria. R.J. King Collection (ex...cavity lined with green malachite. Roughton Gill Mine, Caldbeck Fells, Cumbria. Norman Thomson Collection...mines, Caldbeck Fells, Cumbria: Part 3 Roughton Gill Mine Trevor F. Bridges, David Green, Michael S. Rumsey...Tindle 23-25 PAPERS Danburite from Meldon Quarry, Okehampton and other UK localities Michael S. Rumsey, George...Leicestershire Francis Ince 44-62 A report on Hay Gill Mine, Caldbeck Fells, Cumbria Trevor F. Bridges, Michael |  | | 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 |  | 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. |  | | Catalog/List | | Daniell Rd, Truro, Cornwall TRI 2 DA England Tel. 01872 223 227 (Tel. UK Time 8am -9pm) Fax. 01872 262 232...(International +44 1872 262 232) OCX)2 CALCITE.Hilton Mine,Scordale,Westmorland Terminated off while calcite...limonilic flat matrix. RF. C.£12 0Cl03 CALCITE.Hilton Mine,Scordale,Westmorland Single translucent honey coloured...Polished seciion.RF SPC. C.£8 0023 DUFTITE.Brandy Gill Mine,Caldbeck Fells,Cumberland.V1v1d green druse of duflile...matrix.G RF SPC. C £4 0025 CHLORlTE afler AXINITE,Meldon Aplile Quarry.Meldon,Devon.Dark chocolatey brown |  | | 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 |  | | 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 |  | | 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 |  | | Journal (article/letter/editorial) | | COMMUNICATIONS Datolite from Meldon, Okehampton, Devonshire DATOLITE Occurs in abundance at Meldon within the...the contact metamorphic aureole on the north-west margin of the Dartmoor granite. The geological setting...Measures (Lower Carboniferous). The presence of datolite is associated with evidence for metasomatic activity...activity involving at least tin, iron, and boron; datolite replaces woilastonite in malayaite wollastonite...wollastonite hornfels from the dumps of Red-a-yen mine (Sharkawi and Dearman, 1966). From the same locality, nonreactive |  | | Journal (article/letter/editorial) | | Indium mineralisation in SW England: Host parageneses and mineralogical relations Jens... Shail, Robin K., Indium mineralisation in SW England: Host parageneses and mineralogical relations,...Ore Geology Reviews Indium mineralisation in SW England: host parageneses AC CE P TE D and mineralogical...Cornubian batholith, SW England 1 ACCEPTED MANUSCRIPT ABSTRACT The SW England ore region contains significant...Interestingly, we have no reason to believe that SW England is different to other regions with granite-related |  | | Journal (article/letter/editorial) | | MAGAZINE, SEPTEMBER I977, VOL. 4I, PP. 4 1 0 - 1 1 Datolite and apophyllite from the Mendips DURING most of...closely resemble those from the near-by Higher Pitts mine (Spencer, 1923); preliminary descriptions have been...be encrusted by an assemblage o f apophyllite, datolite, calcite, and baryte. Observation of the exact...layer of calcite, fibrous radiating masses of datolite, and occasional small apophyllite crystals lie...crust, up to 3 mm thick, of milky white fibrous datolite, in crevices within which lie aggregates o f larger |  | | Catalog/List | | 1600 hours each day at 7, Condor Way, Burgess Hill, West Sussex Tel: 01444 233958 (Pre-view on Saturday March...Gold Localitv Peru Broken Hill Australia Crow Hill Mine, Cornwall Kildonan Burn Sicilv Elba Glen Strathfarrat...The Knipe, S.Scotland Ow A2 Price £1 Coldberrv Mine Corsica A2 A2 £2 sop Nevada, USA Unknown The...Rocks Cornwall Hinqston Down, Cornwall Smallcleugh Mine, Nenthead A2 A2 A2 A2 A2 A2 A2 A2 A2 A2 A2 £1... £1 A3 A3 £1 £3 A3 A3 A3 A3 £1 £1 £1 £1.50 West Caradon Cornwall Wheal Jane, Cornwall Greystones |  | | Journal (article/letter/editorial) | | closely resemble those from the near-by Higher Pitts mine (Spencer, 1923); preliminary descriptions have been...be encrusted by an assemblage o f apophyllite, datolite, calcite, and baryte. Observation of the exact...layer of calcite, fibrous radiating masses of datolite, and occasional small apophyllite crystals lie...crust, up to 3 mm thick, of milky white fibrous datolite, in crevices within which lie aggregates o f larger...either datolite or apophyllite in south-west England, and the first reported from Somerset. Datolite has |  | | Catalog/List | | 5 AGARDITE (Ce) r ...fe green micro's Mine, Wolf;_n, West Germany) 'h ins f.3. 60 6 ALBITE rich orange...in green Omphacite. An attractive Eclogite rock.(West Coast of Norway) lx2 90p 2x2 ll,80 2x4 t3.70 218...sphere shaped botryoidal nodule,(Newhaven Sussex. England) 1" -10p 2"90p 3" !1.40 4" !3,30 13 ALUNITE pure... /' pale blue-gny ~;ssi\·c. (Staffordshire England) :::-::1 !:;1 2x4 tt.20 2;-;2 60µ e2S ANTARCTICITE...Grey-white crystals with terminations.(Sheppey Kent,England) lxl cm !1.80 43 BARYTES orange brownto fawn attractively |  | | Catalog/List | | No. Byways, 20 Burstcad Close, Cobham, Surrey, England KTll 2NL EMAIL 2007 104 Phone 01932 862340 ...----·-·- ---- ·- -- 1129 ALMANDINE Brastad iron Mine near Arendal ,Norway 87 ■ BERYL Evje area . South...---·-··----·------ ·- - ---27 ANTHOPHYLLITE Kaveltorp Mine Sweden 1008 CHRYSOBERYL Kolsva. Vastmanland Sweden...--~----· ·---·-------- -- -62 COBAL TITE Bolidcn Mine, North Sweden 1003 ARSENIOPLEITE Sjogruvan,Ridd...2x3 £25 Ampibole 1140 ERYTHRITE Sl-a1tterud Cobalt Mine. Vikersund Norway 970 MAGNESIOHASTINGSITE Langban |  | | Journal (article/letter/editorial) | | the north side of the Moor, and although he left England with his investigations incomplete this brief account...valley of the East Okement lliver, not far from Okehampton. Above Fartherford railway viaduct this stream...read a paper before the Geological Society on the Meldon area, of which only an abstract has yet appeared...mentioned, are well exposed in the Simmons Park at Okehampton. The highest beds which are distinctly altered...It has a banded structure, like most of the West of England " calc-flintas", and is generally highly silicified |  | | Catalog/List | | _1_0_0_ Byways, 20 Burstead Close, Cobham, Surrey, England KTll 2NL EMAIL ·_-2_0_0_6__, -· Phone 01932...Lochinver, Scotland 12 ALUMINITE Newhaven Sussex, England / MAGNESIOHORNBLENDE, dark green fibrous mass....___ 2x2£3 ___ - -----~ - ~014_ _ 88 ADAMITE Ojuela Mine, Mapimi, Mexico 69 ALUMOHYDROCALCITE South Bay,...- - --··---- - - - - - · . 767 AJOITE Christmas Mine, Gila County, Arizona USA 17 ANAL CITE Talisker...Sweden 501 ALLOPHANE New East Whcal Russell mine, Devon ,England variety VIRIDINE (Mangan rich variety) Olive |  | | Book | | significant minerals to come out of southwest England. The accompanying captions describe the crystallographic...~t~' l lr\ V: 1 'I Minerals of Cornwall and Devon Joseon1ne Community Llbral1es Grants Pass, OreQon...Minerals of Cornwall and Devon. 1. Mines and mineral resources;--England --Devon 2. Mines and n1ineral resources...resources --England--1Cornwall J. Title IL Symes. R. F. 549.9423'5 QE262.D45 ISBN 0-56 5-009 8 9- 3 paperback...ISBN 0-565 01046 8 hardback Printed in England by Balding+ Mansell UK Litnited CONTENTS • Acknowledgements |  | | 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...meneghinile Pengenna mine,St Kew,Cornwall; Shallowfield Bridge,SouthMolton,Devon Tynebottom mine,Alston.CUm~ria |
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