 | | Journal (article/letter/editorial) | | Geoscience in south-west England SURFICIAL GEOCHEMICAL SIGNATURES OF TIN AND TUNGSTEN DEPOSITS NORTH...St. Austell Granite. Geoscience in south-west England, 10, 000-000. A large regional soil geochemical...Sn. Tungsten enrichment is present in the Castle-an-Dinas area associated with As and the mined vein...around specific late granites (especially Castle-an-Dinas) and mineralised veins, both Sn and W bearing...School of Mines, University of Exeter, Redruth, Cornwall, TR15 3SE, U.K. Department of Geology, University |  | | Journal (article/letter/editorial) | | mineralised granite aureoles Geoscience in south-west England, 10, 042-049 The REE distribution patterns in...Tregonning Granite aureole, have shown that there is an increase in the REE contents close to the contacts...depletion anomalies and that reliance on this feature as an indication of granite differentiation is suspect...showed that oxidation of Ce3+ to Ce4+ takes place in an alkaline environment under surface conditions. In...granites (Castle an Dinas, Cligga Head and St Agnes) are more evolved, have characteristically higher Rb and |  | | Report (issue) | | 3LA No.82 Mineral investigations near Bodmin, Cornwall. Part 4Drilling at Royalton Farm BRITISH GEOLOGICAL...Report No. 82 Mineral investigations near Bodmin, Cornwall. Part 4- Drilling at Royalton Farm Geology K...Programme Reports 36 An appraisal of the VLF ground resistivity technique as an aid to mineral exploration...parts of south Devon and Cornwall 45 Mineral investigations near Bodmin, Cornwall. Part 2-New uranium, tin...Investigations for tin around Wheal Reeth, Godolphin, Cornwall 46 Gold mineralisation at the southern margin |  | | Report (issue) | | Mineral investigations near Bodmin, Cornwall. Part 5-The Castle-an-Dinas wolfram lode BRITISH GEOLOGICAL...Mineral investigations near Bodmin, Cornwall. Part 5-The Castle-an Dinas wolfram lode K. E. Beer, BSc, CEng...geochemical maps of p arts of south Devon and Cornwall 45 Mineral investig ations near Bodmin, Co·nwall...Wheal Reeth, Godolphin, Cornwall 82 Mineral investig ations near Bodmin, Cornwall. Part 4-Drilling at Royalton...Royalton Farm 47 An air borne geophysical survey of the Whin Sill between Haltwhistle and Scots' Gap |  | | 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 |  | | Journal (article/letter/editorial) | | 161lingite at the New Consols mine, Stolce Climsland, Cornwall. By P. G. EMBREY, B.A., B.Sc., A.R.I.C. Department...elements in the New Consols mine, Stoke Climsland, Cornwall. Unfortunately, I was unable to collect further...of the small number of reported occurrences in Cornwall. S BERYL. The beryl was found in specimens...52-fathom level. Most of the pegmatite, which has an ill-defined junction with the surrounding killas...killas, is a moderately fine-grained aggregate of quartz, albite, and sodie muscovite ; the coarsely crystalline |  | | Journal (article/letter/editorial) | | elvans and lamprophyres. Geoscience in South-West England, 13, 459-470. The TellusSW survey of 2013-4 consisted...Radiometric data are particularly useful in providing an overview of units within individual granite plutons...and eK. Rose Cottage, Church Hill, Calstock, Cornwall, PL18 9QQ, U.K. and Camborne School of Mines,... INTRODUCTION Geological mapping in Devon and Cornwall and subsequent interpretation is often difficult...magnetic surveys were first flown in Devon and Cornwall in 1956 and 1957-9, respectively. Regional geochemical |  | | Journal (article/letter/editorial) | | September, 1924. Vol. XX. Topaz from Cornwall, with an account of its localities. By Arthur Russell...Russell. [Read January 15, 1921.] rpOPAZ, so common an accessory in tin lodes in all parts of the world...hitherto been looked upon as comparatively rare in Cornwall. When massive, or even in the form of small, well-developed...overlooked, or apt cursorily to be mistaken for quartz. The presence of topaz as a microscopic accessory...mass, thus affording evidence that topaz is in Cornwall, as in the case of other countries, a comparatively |  | | Book | | Beds Igneous rocks Cretaceous Phonolite Permian Quartz-porphyry, felsite and microgranite (Elvan) Carboniferous...district featured on Maton 's geological map of Cornwall in 1797 and accounts, both of the minerals and...contemporaneous with the Mylor Slates, are described and an account is given of their folding and faulting during...late Carboniferous. They are described in detail and an account is given of their metamorphic aureoles. Other...the granites, and dykes of lamprophyre, aplite, quartz-feldspar porphyry (elvan) and intrusive breccias |  | | 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...being higher in Mg, Ca, Sr, and Sn and lower in Fe, Mn, and F and also tending to have a higher Cr, V...composition of the tourmalines is used to show that some quartz-tourmaline rocks are the product of extreme fractionation...growth. H E geology of the granites of south-west England is reviewed comprehensively by Exley and Stone |  | Clark, A.H., Chen, Y., Farrar, E., Wasteneys, H.A.H.P., Stimac, J.A., Hodgson, M.J., Willis-Richards, J., Bromley, A.V. (1993) The Cornubian Sn-Cu (-As, W) Metallogenetic Province: product of a 30 m.y. history of discrete and concomitant anatectic, intrusive and hydrothermal events. Proceedings of the Ussher Society, 8 (2) Ussher Society. | Journal (article/letter/editorial) | | the Pennsylvanian to the Early Permian, spanning an interval of 25-30 m.y. U-Pb dates for magmatic monazites...320°C of the host intrusive rocks, lending support to an origin related to retrograde boiling of apical magmas...South Crofty Mine, Dudnance Lane, Pool, Redruth, Cornwall TR15 3RS. J. Willis-Richards, Camborne School...Rosemenowas, Penryn, Cornwall TR10 9DU. A. V. Bromley, Petrolab, Wilson Way, Pool, Redruth, Cornwall, TR15 3RS....and minor magmatic events. This model is based on an extensive body of conventional K-Ar (Miller and Mohr |  | | Report (issue) | | Report 1 07 Mineral investigations near Bodmin, Cornwall, Part 6 The Belowda area K E Beer, B R Mountford...Resources Series Mineral investigations near Bodmin, Cornwall Part 6 The Belowda area K E Beer, BSc, FIMM B...R C. 1989. Mineral investigations near Bodmin, Cornwall. Part 6:The Belowda area. British Geological Survey...Great Britain and Northern Ireland (the latter as an agency service for the government of Northern Ireland)...drilling carried out in the Belowda area of mid-Cornwall. comprehensive data package is available at a |  | | Report (issue) | | element known to be used by any living organism and is an essential nutrient for some bacteria. However, it...temperature increases; a low coefficient means that an element expands little as temperature rises. 3 Tungsten...Devon, UK. The tungsten is present in wolframite, the dark mineral along the edge of the quartz vein in...in Table 2. 4 Non-stoichiometric compounds have an elemental composition that cannot be represented...approximately two thirds of known tungsten deposits. An important property of scheelite is the bluishwhite |  | | Journal (volume) | | member Roger Penhallurick. © The Society, 1969. Cornwall Archaeological Society President A N D R E W D...interested in the history and material culture of Cornwall and the Isles of Scilly (persons under 16 being...publications of the Society or of the former West Cornwall Field Club should be sent to Miss M. Buckingham...Price to non-members: Fifty Shillings. Printed in Cornwall by H. E. Warne, Ltd., St. Austell H* P0 Hi w...WEAVER A Possible Roman Road aligned on Stratton. Cornwall 81 K . E . JERMY, M.A., A.I.M., A.R.HIST.S. |  | | Book | | and line-drawings give an insight into the peoples who have occupied Cornwall over the last eight thousand...people, who first brought the use of metal to Cornwall, traded with Ireland and the Middle East. They...who otherwise made little impression on remote Cornwall. The departure of the Romans from Britain heralded...evangelising men and women who brought Christianity to Cornwall a hundred-and-fifty years before St. Augustine...inclusion of Cornwall as part of England for the first time in history. The author came into Cornwall nearly |  | | Report (issue) | | 1.60 Total 100.48 94.15 100.00 (1) Castle-an-Dinas mine, England. (2) Flo property, Canada; by electron...85 Fe0.15 )Σ=1.00 O6 . (3) Bi2 WO6 . Occurrence: An alteration product of earlier bismuth minerals in...muscovite, tourmaline, quartz. Distribution: In England, at the Castle-an-Dinas mine, St. Columb Major...Major, and the Hingston Down quarry, Calstock, Cornwall; and from Buckbarrow Beck, Corney Fell, Cumbria....mineral collector, of Swallowfield Park, Berkshire, England. Type Material: National School of Mines, Paris |  | | Journal (article/letter/editorial) | | Sn-W mineralisation in peninsular Thailand and SW England D. A. C. Manning Department of Geology,The University...Newcastle-upon-Tyne,NE1 7RU, England Abstract. The Sn-W deposits of SW England and SE Asia are associated...vein systems are only locally important. In SW England, wolframite and cassiterite mainly occur in hydrothermal...Similar late-stage granitic rocks occur also in SW England, but a later topaz granite, enriched in F, Li and...have formed by late magmatic crystallisation from an aqueous phase enriched in metals and derived by exsolution |  | | Journal (article/letter/editorial) | | PROSPECTIVITY OF BAYES’ THEOREM TUNGSTEN IN SOUTH-WEST ENGLAND USING M.W.C. BARR 1 AND R.C. SCRIVENER 2 Barr...tungsten in South-West England using Bayes’ Theorem. Geoscience in South-West England, 13, 274-285. Bayes’...surrounding country rocks of the southwest peninsula of England. The approach uses the distribution of known tungsten...South-West England. INTRODUCTION METHOD The southwest peninsula of England has been an important source...Century when for a short time in the 1850s Devon and Cornwall supplied 40 per cent of world production. Since |  | | Journal (article/letter/editorial) | | E. H. Davison—Castle-an-Dinas Wolfram Mine. 347 under this name seem to belong to Kayser's species...Torquay. (Torquay Museum.) On the Geology of Castle-an-Dinas Wolfram Mine. By E. H. DAVISOX, B.SC. fFHERE...fFHERE are two hills named Castle-an-Dinas in West Cornwall, •*- one near Penzance and the one on which... 1905, pp. 173, 225. 348 E. H. Davison—Castle-an-Dinas Wolfram Mine. The hill rises 700 feet above...conspicuous feature in the landscape ; it is surmounted by an ancient earthwork which has given the hill its name |  | | Journal (article/letter/editorial) | | Vol. XXVIII On rashleighite, a new mineral from Cornwall, intermediate between turquoise and chalcosiderite...mineral here described was at first considered to be an iron-rich T variety of turquoise and was described...its localities, Bunny mine, St. Austell, and Castle-an-Dinas wolfram mine, St. Columb Major. As a result... and forming a middle member of what is probably an isomorphous group. The name rashleighite commemorates...R.S., F.G.S., F.S.A., 1729-1811, of Menabilly, Cornwall, one of the earliest of Cornish mineralogists |  | | Journal (issue) | | into the geology and geomorphology of south-west England Volume 6 Part 4 1987 Edited by G.M Power The...into the geology and geomorphology of southwest England and the surrounding marine areas; to hold Annual...Annual Conferences at various places in South West England where those engaged in this research can meet formally...SHEPHERD: Chronology of magmatism in south-west England: the minor intrusions. B. BOOTH and C.S. EXLEY:...Austell Granite, Cornwall. M. STONE: Geochemistry and origin of the Carmenellis pluton, Cornwall: further considerations |  | | Journal (article/letter/editorial) | | coarse-grained granite (CGG) has a groundmass with an average grain size of greater than 2.0 mm and the...groundmass of the fine-grained granite (FGG) has an average grain size of less than 1.0 mm. A medium-grained...emplacement ages for the CGG (Lamorna Quarry, SW 452 243) and FGG (Castle an Dinas, SW 487 348) of 274.5±1.4 Ma...to suggest that the FGG mass at Castle an Dinas is a roof pendant of an earlier igneous phase. Although...enclaves of FGG. Crosscutting both the CGG and FGG is an irregularly shaped sheet-like intrusion of non-megacrystic |  | | 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...granite. A tourmalinized granite, luxullianite, was an important decorative stone, and was used for the |  | | Book | | ■ W. ' -.X\ »•*>.?* QOLD in the Counties Of Cornwall and Devon Errata Contents should read; Dedication...Counties Of Cornwall and Devon G.S.Camm CORNISH HILLSIDE PUBLICATIONS St. Austell, Cornwall. r First...Analysis 17 Gold Bearing Localities 25 I West Cornwall District 25 2 Camborne to Truro District 27...Index 99 108 Maps and Figures Page Map 1 SW England Simplified Geology. Map 2 District Location.... Fig I Sources of metal-bearing fluids in SW England. 9 Fig 2 Profile of oxidised sulphide-bearing |  | | Journal (article/letter/editorial) | | THE MINERALOGICAL MAGAZINE AN I) J O U R N A L OF T H E M I N E R A L O G I C A L SOCJETY No. 161 June...information that the material came t'rom the Castle-an-Dinas wolfram mine, and contained bismuth and tungsten...was begun. The mineral has all tile attributes of an alteration product probably of native bismuth. It...mineral. Spectrographs of the two are identical, but an X-ray powder photograph of the green mineral is quite... H . H E Y , F. A. BANNISTER, AND A. RUSSELL ON An examination of the X-ray powder photograph of the |
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