 | | Journal (article/letter/editorial) | | of the five large granite masses of the West of England, is, nevertheless, perhaps the most interesting...has long been famed for the variety of peculiar rock-types and interesting minerals which it has yielded...St. Dennis and Roche. The area comprises the second most elevated district in Cornwall, rising to a height...excursion to Cornwall in 1887, when visits were paid to Carclaze and other clay works, and to Roche Rock. '*'...six inches. They are conspicuous features of the rock, both on fresh and on weathered surfaces, and their |  | | Journal (article/letter/editorial) | | Origin of quartz cores in tourmaline from Roche Rock, SW England A. MUÈLLER1,*,{, B. J. WILLIAMSON1 AND...Natural History Museum, Cromwell Road, London SW7 5BD, UK School of the Environment, University of Brighton...Cockcroft Building, Lewes Road, Brighton BN2 4GJ, UK ABS TR AC T The nature and mode of origin of quartz-cored...massive quartz-tourmaline (MQT) rocks at Roche, SW England. The QCT are annular, have blue maximum absorption...cores. Both the blue and brown tourmalines are schorl, but are compositionally distinct showing different |  | | Journal (article/letter/editorial) | | Chemical variation in tourmalines from south-west England By G. M. POWER~ Department of Geology, University...tourmaline from the granitic rocks of southwest England have been analysed by emission spectrography for...growth. H E geology of the granites of south-west England is reviewed comprehensively by Exley and Stone...from Dartmoor to the Stilly Isles. The predominant rock-types are coarse porphyritic biotite granites containing...concentrates were obtained from crushed samples of the rock using an isodynamic magnetic separator. Each concentrate |  | Drivenes, Kristian, Larsen, Rune B., Müller, Axel, Sørensen, Bjørn E., Wiedenbeck, Michael, Raanes, Morten P. (2015) Late-magmatic immiscibility during batholith formation: assessment of B isotopes and trace elements in tourmaline from the Land’s End granite, SW England. Contributions to Mineralogy and Petrology, 169 (6) doi:10.1007/s00410-015-1151-6 | Journal (article/letter/editorial) | | in tourmaline from the Land’s End granite, SW England Kristian Drivenes1 · Rune B. Larsen1 · Axel Müller2...the roof segment of the Land’s End granite, SW England. This study shows that the orbicules formed from...Natural History Museum, Cromwell Road, London SW7 5 BD, UK 4 Helmholtz-Zentrum Potsdam, Deutsches GeoForschungsZentrum...throughout the Cornubian Batholith of South West England, in some areas achieving major mineral status....Poli 2007). The Cornubian Batholith of South West England comprises multiple major and minor granitic complexes |  | | Report (issue) | | MEMO.IRS OF THE GE()LOG-ICAL SURVEY ENGLAND AND WALES. EXPLANATION OF SHEET 347. THE GEOLOGY OF THE...and Museum of Practical Geology. •· LIST 6f CORNWALL. 32. NE., by C. Reid ; 32 SE., by C. Reid, G...••• Ci,APTER IX.-NATURE AND ORIGIN OF CHINA CLAY ROCK AND 'CORNISH STONE' IN THE S'r. Aus'rELL GRANI'l'E...United Mines 143 •• • • •• • ••• ••• ,, 17. Duke of Cornwall Mine ••• 143 • •• ••• ••• ••• ••• ••• ,, 18. East...describe the geology of about 200 square miles in Cornwall, including the ,vhole of St. Austell Moor, and |  | | Journal (article/letter/editorial) | | REPORT OF AN EXCURSION TO THE ST. AUSTELL DISTRICT, CORNWALL. APRIL 16TH TO 18TH, EASTER, 1914. By T. C. F...the railway arrangements with those of the North Cornwall Excursion. This plan necessitated somewhat long...modifications which that rock has experienced. These changes, common to all the West of England granites, are particularly...occurrence of numerous veins of quartz-tourmaline rock or EXCURSION TO THE ST. AUSTELL DISTRICT. 35...The members then proceeded to inspect the altered rock and the processes to which it is subjected in the |  | | Journal (article/letter/editorial) | | Chemical variation in tourmalines from south-west England D. A. C. MANNING Manning, D.A.C. 1991. Chemical...Chemical variation in tourmalines from south-west England. Proceedings of the Usher Society, 7, 327-332. It...been recognised that tourmaline from south-west England shows complex compositional variation on all scales...section) shows limited chemical variation about a schorl-dravite composition which is alkali or proton deficient;...from magmatic tourmaline towards stoichiometric schorl. Finally tourmaline from the breccia pipes and |  | | Journal (article/letter/editorial) | | the Variscan granites and related rocks of west Cornwall. Together with electron microprobe data these...geochemistry The high-level, late Variscan granites of SW England are derived from highly differentiated melts rich...hydrothermal activity, involving substantial water-rock interaction with ample opportunity for mineralization...form tourmaline. The pelitic and basaltic country rock underwent low-grade regional metamorphism some 80...100 mg aliquots of crushed and finely ground whole-rock samples were decomposed by NH4F fusion followed |  | | Journal (article/letter/editorial) | | a guide to fluid processes in the southwestern England orefield: An ion microprobe study M. P. SMITH Department...revised of Leeds, j&m Leeds December LS2 9JT. UK 29. 1995 ) Abstract-The boron isotopic composition...from a series of sites in the western southwest England orefield has been determined using ion microprobe...tourmalines from selected localities in the southwest England orefield have been determined. The source of boron...during the growth of tourmaline. The southwest England orefield shows a long history of hydrothermal activity |  | | Book | | Endsleigh House 50 Daniell Road Truro, Cornwall TR1 2DA England Printed in Great Britain by Short Run...that he knew of no place on earth that surpassed Cornwall in the number and variety of its minerals. Hogg's...is subtitled 'in wich [sic] is shown how much Cornwall contributes to the illustration of the science'...later by Collins' A Handbook to the Mineralogy of Cornwall and Devon' (1871; 1892 with addenda, the latter...mention Purser's 'Minerals and locations in S.W. England' (1974). The work was never published, although |  | | Report (edition) | | AND MUSEUM BRITISH REGIONAL GEOLOGY SOUTH-WEST ENGLAND (SECOND EDITION) by HENRY DEWEY LONDON HER ...SURVEY AND REGIONAL MUSEUM GEOLOGY SOUTH-WEST ENGLAND (SECOND EDITION) by HENRY DEWEY YRIGHT RESERVED...DEVONIAN ROCKS -----(1) Lower Devonian -----(a) Cornwall and South Devon (b) North Devon ------ - 17...17 17 17 19 (2) Middle Devonian -----(a) Cornwall and South Devon _ _ _ lb) North Devon ------- - 22...22 22 22 (3) Upper Devonian -----(a) Cornwall and South Devon lb) North Devon ------(c) Pillow lavas |  | | Report (chapter) | | building and decorative stones of Cornwall, UK COLIN M. BRISTOW Cornwall Geoconservation Group, Ty Gwyn...46 Chatsworth Way, Carlyon Bay, St Austell, Cornwall, UK (e-mail: mail@colinbristow.com) Abstract: Arising...varied suites of igneous and sedimentary rocks, Cornwall has a rich variety of building and decorative...such as elvan and sandrock, do not occur outside Cornwall, so local stone provides much character to the...Wellington’s sarcophagus in St Paul’s Cathedral. Schorl rock is often found in older buildings in the granite |  | Breiter, K., Ďurišová, J., Hrstka, T., Korbelová, Z., Vašinová Galiová, M., Müller, A., Simons, B., Shail, R.K., Williamson, B.J., Davies, J.A. (2018) The transition from granite to banded aplite-pegmatite sheet complexes: An example from Megiliggar Rocks, Tregonning topaz granite, Cornwall. Lithos, 302. 370-388 doi:10.1016/j.lithos.2018.01.010 | Journal (article/letter/editorial) | | from Megiliggar rocks, Tregonning topaz granite, Cornwall K. Breiter, J. Ďurišová, T. Hrstka, Z. Korbelová...from Megiliggar rocks, Tregonning topaz granite, Cornwall. The address for the corresponding author was...from Megiliggar Rocks, Tregonning topaz granite, Cornwall K. Breiter, J. Ďurišová, T. Hrstka, Z. Korbelová...Kingdom B. Simons, 14 Park an Fenten, St. Agnes, Cornwall, TR5 0A5, United Kingdom MA R.K. Shail, B.J...Sciences, University of Exeter, Penryn Campus, Cornwall, TR10 PT E D 9FE, United Kingdom Abstract |  | Duchoslav, M., Marks, M.A.W., Drost, K., McCammon, C., Marschall, H.R., Wenzel, T., Markl, G. (2017) Changes in tourmaline composition during magmatic and hydrothermal processes leading to tin-ore deposition: The Cornubian Batholith, SW England. Ore Geology Reviews, 83. 215-234 doi:10.1016/j.oregeorev.2016.11.012 | Journal (article/letter/editorial) | | tin-ore deposition: The Cornubian Batholith, SW England M. Duchoslav, M.A.W. Marks, K. Drost, C. McCammon...tin-ore deposition: The Cornubian Batholith, SW England, Ore Geology Reviews (2016), doi: http://dx.doi...tin-ore 2 deposition: The Cornubian Batholith, SW England 3 4 M. Duchoslava,*, M.A.W. Marksa, K. Drosta...hydrothermal stages of the Cornubian Batholith (SW England). Tourmaline composition found in 17 barren and...tourmaline 18 species with the general endmembers schorl, dravite, elbaite, uvite, feruvite, foitite and |  | Davison, E.H., Dines, H.G., Leese, C.E., Owen, D.E. (1938) Easter field meeting, 14th–21st April, 1938, Cornwall. Proceedings of the Geologists' Association, 49 (4) 385-391 doi:10.1016/s0016-7878(38)80003-1 | Journal (article/letter/editorial) | | EASTER FIELD MEETING, 14th-21St APRIL, 1938, CORNWALL. Report by the Directors :- E . H. DAVISOK, DINES...Camel Estuary was soon reached and the village of Rock was struck for liquid refreshment. At an exposure...is almost vertical and EASTER FIELD MEETING-CORNWALL. is composed of a red granite porphyry, the mineral...were few in number. Roche Rock. This outcrop of quartz tourmaline rock (schorl rock) is part of an unusually...and the clay rock on either side of such veins is always very completely kaolinised. The rock is surmounted |  | | Book | | Twelveheads Press PO Box 59, Chacewater Truro, Cornwall TR4 8Z}. especially true of its minerals, some...are very rare and worldfamous. A wide variety of rock types has determined the coastal and inland scenery...rocks lie at the bottom of a sequence, but in Cornwall this becomes far from simple where rocks have...history, the formation and properties of the main rock types are described, followed by the more common...the county’s inland and coastal FRONT cover: Roche Rock landscapes. Mention is also made of economic |  | | Report (chapter) | | on August 7, 2015 Geology and landscape in SW England in the late eighteenth century, as recorded in...Hatchett and Thomas Rackett, embarked on a tour into Cornwall visiting the more southerly parts of Dorset and...Maton, providing a contemporary description of SW England during the latter part of the eighteenth century...Many sites which they visited, such as Roche Rock in Cornwall, Kent’s Cavern in Devon and Wookey Hole...map is of considerable historic importance. SW England has been a popular destination for travellers at |  | | Journal (article/letter/editorial) | | A.R.C.Sc., B.Sc., F.G.S. The Geology of North Cornwall. By H. DEWEY, F.G.S. The Petrology of the St....Kzrkcaldy, photo ... 3.-Fig. 1. Section from the Castle Rock, Edinburgh, across Salisbury Craigs and Whinny Hill...Burn near Loanhead. Ctol. Sun l • 7 -The Castle Rock, EdinbUlgh. Junction of basalt plug with Sandstones...South-west 30.-Geologicall\lap of a portion of North Cornwall. H. Dewev 31A -Carclaze China Clay Pit. Kaolinised...veins of Schorl Rock. T. C. Ha!!, photo 3IB.-Carcla2e China Clay PIt. Veins of Schot! Rock in Kaolinised |  | Gawęda, A., Müller, A., Stein, H., Kądziołko-Gaweł, M., Mikulski, S. (2013) Age and origin of the tourmaline-rich hydraulic breccias in the Tatra Granite, Western Carpathians. Journal of GEOsciences, 58 (2) 133-148 | Journal (article/letter/editorial) | | local overpressure causing metasomatic alteration, rock brecciation and cementation by tourmaline (T1 breccias)...5 Ma by the WR Rb–Sr method (Gawęda 1995). The schorl–dravite series tourmaline crystallization in the...000 9.000 8.999 8.892 8.971 8.963 quently in the schorl– ΣY+Z X-sites dravite–Mg-foitite com0.039 0.100...0.465 and can be classified Xvac (W+V)-sites as schorl (Fig. 4a). On 0.021 0.016 0.058 0.074 0.021 0.000...0.6 0.9 a 0.4 0.3 0.2 Dravite 0.1 0.0 0.2 Schorl r2 = 0.923; T2 0.7 r2 = 0.77 T1 0.6 0.5 0.4 |  | | Journal (article/letter/editorial) | | varieties, and habits of tourmaline: (a) left: schorl, 20 cm, Minas Gerais, Brazil, and right: dravite...much. The continental crust of Earth, which is the rock domain that is most enriched in boron, contains...California, San Diego] at 03:56 02 March 2016 Dravite Schorl Foitite Olenite Elbaite Fluor-liddicoatite Rossmanite...that, when turned to rock, becomes shale. Shale is the most abundant sedimentary rock because the oceans...almost entirely by tourmaline. From Metamorphic Rock to Granitic Magma Continental collisions, such as |  | da Costa, I. Ribeiro, Mourão, C., Récio, C., Guimarães, F., Antunes, I. M., Ramos, J. Farinha, Barriga, F. J. A. S., Palmer, M. R., Milton, J. A. (2014) Tourmaline occurrences within the Penamacor-Monsanto granitic pluton and host-rocks (Central Portugal): genetic implications of crystal-chemical and isotopic features. Contributions to Mineralogy and Petrology, 167 (4) doi:10.1007/s00410-014-0993-7 | Journal (article/letter/editorial) | | populations from these different settings: (a) schorl–oxyschorl tourmalines from granitic rocks have...University of Southampton, Southampton SO14 3ZH, UK 123 993 Page 2 of 23 rocks (replacement tourmalinites)...d18O *13.2 %, closer to the values for the host-rock. Although B-metasomatism associated with some granitic...metasedimentary rocks (P-11, P-14, P-15A). Whole-rock data for representative tourmaline-bearing rocks...is summarized below and complemented with whole-rock chemical data presented in Table 1. Contrib Mineral |  | | Book | | Collectors Guide to ^MINERALS, ROCKS and GEMSTONES \in Cornwall and Devon |'; '’i '■-■ ,, t Cedric Rogers...Collector’s Guide to 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...GEMSTONES OF CORNWALL Quartz Gemstones 12 13 GRANITE AND OTHER ROCKS Felspar. Mica. Schorl. Chlorite China...Mount’s Bay - The Lizard .. North and Central Cornwall East Cornwall Devon 26 27 28 29 30 31 32 33 34 35 MAPS |  | | Journal (article/letter/editorial) | | following papers were then read : , On the geology of Cornwall, with special reference to the Long Excursion... SKETCH OF THE GEOLOGY OF CENTRAL AND WEST CORNWALL. With special reference to the Long Excursion...stratified rocks of tho Central and Western parts of Cornwall-with the exception of about twelve square miles...its broad outlines, very simple. The fundamental rock is a mass of granite extending from Dartmoor to...five large masses * t 'Report on the Geology of Cornwall,' &c., p. 86. iua., p. 95. t "On tho Geolouical |  | | Report (edition) | | G .. Bisson (District Geologist, South--West England), as well as Professor W. R. Dearman and the con...volume [1966] of the Royal Geo logical Society of Cornwall. The succeedi11g years have seen notable advances...in our knowledge of the geology of south-west England. Most of the great expanse of Carbonif�rous rocks...and Mining; Clay; Stone; Sand and Gravel; Peat; Rock-salt and Gypsum; Coal, . . . . Pigment and Oil;...age-determinations of rocks of south-west . . . . . . . Facing England 1 112 List of Geological Survey Maps and Memoirs |  | Mughal, Muhammad Saleem, Zhang, Chengjun, Hussain, Amjad, Rehman, Hafiz Ur, Du, Dingding, Baig, Mirza Shahid, Basharat, Muhammad, Zhang, Jingya, Zheng, Qi, Hussain, Syed Asim (2020) Petrogenesis and Geochronology of Tianshui Granites from Western Qinling Orogen, Central China: Implications for Caledonian and Indosinian Orogenies on the Asian Plate. Minerals, 10 (6) 515 doi:10.3390/min10060515 | Journal (article/letter/editorial) | | Caochuanpu granite, Yuanlongzhen granite, and the Roche type rock) of the Tianshui area in the Western Qinling...Proto-Tethyan Qinling and Paleo-Tethyan Qinling. The Roche type rock, tourmaline-rich, was possibly formed from...with some radiolarian chert, and thin ultramafic rock. Moreover, the zircon U-Pb ages of 463–474 Ma are...3. Materials and Methods Fifteen representative rock samples were collected from the Tianshui area in...TYG-3, TYG-4, TYG-5 and TYG-6), and 2 from the Roche type rock (RTR-1 and RTR-2) (see sample location in Figure |
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