Mineral Reconnaissance Programme Report

Total Page:16

File Type:pdf, Size:1020Kb

Mineral Reconnaissance Programme Report Natural Environment Research Council Institute of Geological Sciences v- Mineral Reconnaissance Programme Report A report prepared for the Department of Industry This report relates to work carried out by the Institute of Geological Sciences on behalf of the Department of Industry. The information contained herein must not be published without reference to the Director, Institute of Geological Sciences. S. H. U. Bowie Programme Manager Institute of Geological Sciences 64-78 Gray’s Inn Road London WClX 8NG No. 11 A study of the space form of the Cornubian granite batholith and its application to detailed gravity surveys in Cornwall a Natural Environment Research Councii Institute of Geological Sciences a 1 Mineral Reconnaissance Programme Report No. 11 a 1 a A study of the space form of the Cornubian granite batholith and its application to detailed gravity surveys in Cornwall 1 a J.M.C. Tombs, BSc I a I a a I A report prepared for the Department of Industry London: 1977 The lnstitute of Geological Sciences was formed by the incorporation of the Geological Survey of Great Britain and the Museum of Practical Geology with Overseas Geological Surveys and is a constituent body of the Natural Environment Research Council. 1 c NERC Copyright 1977 1 It is recommended that reference to this report be made in the following form: TOMBS, J.M.C. 1977. A study of the space form of the Cornubian granite batholith and its application to detailed gravity surveys in Cornwall. Miner. Reconnaissance I Programme Rep. inst. Geol. Sci., No. 11, 16 pp. t Photocopied in England by the Institute of Geological Sciences ii CONTENTS Page SummaT INTRODUCTION THE GRAVITY SURVEYS Outline of the procedure for obtaining depth to granite 1 Gravity measurements 2 Density estimates 2 Borehole information 2 Other controls on the modelling 2 Construction of the batholith model 3 The detailed survq areas 3 INTERPRETATION OF THE MODELS 3 The batholith model 3 The problem of indeterminacy 3 Description of the model 3 Discussion 4 The detailed survey areas 4 a. Hayle-Leedstown area 4 b. St Agnes area 4 c. St Austell area 4 CONCLUSIONS 5 REFERENCES 5 ILLUSTRATIONS Fig, 1 Location map 6 Fig. 2(a) The batholith model - polygon approximation 7 Fig. 2(b) The batholith model - section along line A-A’ 8 Fig. 2(c) The batholith model - pseudo-perspective view 9 Fig. 3(a) Hayle-Leedstown area - regional field in mGa1 10 Fig. 3(b) Hayle-Leedstown area - residual field in mGa1 10 Fig. 3(c) Hayle-Leedstown area - depth of granite below sea level 11 Fig. 3(d) Hayle-Leedstown area - section along line A-A’ .ll Fig. 4(a) St Agnes area - regional field in mGa1 12 Fig. 4(b) St Agnes area - residual field in mGa1 12 Fig. 4(c) St Agnes area - depth of granite below sea level 12 . Fig. 4(d) St Agnes area - section along line A -A ’ 12 Fig. S(a) St Austell area - regional field in mGa1 13 Fig. 5(b) St Austell area - residual field in mGa1 14 Fig. 5(c) St Austell area - depth of granite below sea level 15 Fig. 5(d) St Austell area - section along line A-A’ 16 Fig. 6 Lands End sheet: Bouguer Gravity Anomaly Map In pocket . 111 A study of the space form of the Cornubian granite batholith and its application to detailed gravity surveys in Cornwall J.M.C. Tombs Summarl THE GRAVITY SURVEYS A three-dimensional computer model of the Cornubian Outline of the procedure for obtaining depth to granite granite batholith, defined by polygonal contours, was created so that its calculated gravity field matched the It is fir% assumed that the Bouguer anomaly variations observed Bouguer Anomaly field, both onshore and off- are due entirely to the granite having a lower density shore. The model was used to define a background than the rocks surrounding it. (= “regional”) field in three areas where detailed gravity Let one of the areas within which the thickness of surveys had been undertaken in the search for shallow killas was to be determined be called A. The technique granite. From the residual field maps of de@h to granite used was to extract from the observed Bouguer anomaly were produced by an iterative technique. Geological field a contribution, GRES, which was proportional to interpretations of the batholith model and of the depth the attraction of the killas within A. (GRES is defined maps are included. more rigorously below). If GRES were known precisely, then the thickness of killas could in principle be uniquely INTRODUCTION determined everywhere within A. In practice an approximation was obtained to the values of GRES at This report, prepared as part of the Department of points on a square grid within A, and the killas thickness Industry’s Mineral Reconnaissance Programme, is an was then derived therefrom, at the same points, by an expansion of the geophysical section of a previous report automatic omputer technique. (Beer, Burley and Tombs, 1975) in the same series. GRES is the difference between the observed Bouguer Bouguer anomaly data relating to detailed surveys, which anomaly field and the field which would be observed if were presented in the former report, together with a the killas within A were replaced by granite. If a separate compilation of regional Bouguer anomaly data, computer model (Ml) could be created which was an have been processed by computer to give contour maps of exact representation of the (anomalous) density distribution depth to the shallowly-concealed roof of the Cornubian everywhere (this is obviously impracticable), its computed granite batholith. As a necessary step in the data gravitational attraction (Gl) would be identical to the processing new information on the possible space form of observed Bouguer anomaly (GOBS) at all points. A second the granite body has been obtained. It is hoped that the model M2, differing from Ml only in that granite reaches results of this investigation will provide not only significant surface everywhere within A, would have an attraction G2 new evidence in the search for a direct relationship between differing from Gl, and hence from GOBS, by GRES. granite plutons and mineralisation, but also a geophysical In the present work a model Mla had been set up to interpretation technique of general applicability in similar approximate Ml. To avoid excessive computing it was geological settings. necessary to limit both the complexity of the model and A mDre detailed knowledge of the relationship between the amount of Bouguer anomaly data used to control its high-temperature mineralisation and the boundary between shape. Mla was designed to reproduce the anomaly at the batholithic granite and metamorphosed slate cover (known intersections of a S km square grid covering the whole in south-west England as killas) is of importance in the region of influence of the batholith; it therefore represents continued search for economic mineral deposits of the tin- a very smoothed version of the actual granite surface tungsten-copper type. The object of the geophysical beneath the killas. From Mla a model M2a, approximating surveys was to produce a detailed picture of depth to M2, was obtained directly. The difference between the granite in three areas (Fig. 1) where the killas cover was attractions G2 and G2a should be small within A excepe believed to be shallow, The principal method used was near its periphery. G2a was computed and subtracted from gravity: previous work in south-west England (Bott, Day GOBS over a grid within A of much closer spacing than and Masson Smith, 1958) and elsewhere had clearly was used to derive Mla. Hence an approximation to demonstrated the negative gravity. anomalies of granite GRES was obtained which made full use of detailed plutons. It was hoped that refinement of both the quality Bouguer anomaly data within A while also allowing for the of the raw gravity data and interpretation techniques would broader background effect of the batholith as a whole. permit an accurate quantitative interpretation. It is evident that to carry out this work the following In the Bosworgy area seismic reflection techniques have data were required: also been used: the results will be presented as a separate (a) detailed gravity measurements over the areas of report. interest, together with less detailed cover over a large surrounding area; boreholej, Non-granite densities range from 2.49 (Culm (b) estimates of the densities of granite and killas so that sandstone) to 2.99 (Lizard hornblende schist). Intrinsic to their relative gravity effects could be determined; the measurements are the following possible sources of (4 borehole information, where available, to provide error: control on the interpretation. (4 Samples of slaty killas taken from de$h may open out The collection and use of the above data are discussed slightly along their cleavage planes leading to a low in the following sections. measured density. This effect can usually be detected at the time of measurement and is not thought to be Gravity measurements a significant source of error (McCann, 1973). w Weathering of samples taken from the surface would In 1973 IGS completed its onshore regional gravity survey lead to the low measured densities but, again, can in south-west England, stations having been established at normally be recognised. bench marks and spot heights at a density of 70-80 per (4 Any small sample may have a density untypical of 100 km2, using vehicle-borne Worden or LaCoste and its formation as a whole. Romberg gravity meters. The regional survey was (4 There are obvious dangers in extrapolating near-surface supplemented in 1972 and 1973 by detailed gravity and granite density measurements down to great deph.
Recommended publications
  • Roselyn Bungalow, Townshend, Hayle, Cornwall, TR27 6AF
    Roselyn Bungalow, Townshend, Hayle, Cornwall, TR27 6AF A contemporary new build bungalow in a village setting St Ives 9.7 miles • New Build • Entrance Hallway • Open Plan Sitting/Dining/kitchen • Cloakroom • Utility Room • Master Suite With Dressing Room • Two Further Bedrooms • Family Bathroom • Gardens & Parking • Guide price £350,000 01872 264488 | [email protected] Cornwall | Devon | Somerset | Dorset | London stags.co.uk Roselyn Bungalow, Townshend, Hayle, Cornwall, TR27 6AF SITUATION ACCOMMODATION Situated in the heart of the quiet peaceful and popular (with approximate room measurements shown on village of Townshend with nearby primary schools in floor plan) St Hilary, Leedstown and Godolphin and activities surrounding the village hall. Roselyn Bungalow is ENTRANCE HALLWAY well situated to access both north and south coasts The half glazed door with side panel leads into the with the nearest beaches at Perranuthnoe, Praa Sands entrance hallway with cloaks hanging space and and Marazion. Goldsithney about two miles to the laminate flooring. west and also offers a range of local amenities About CLOAKROOM seven miles to the west is the harbour town of Opaque window to side. Low level WC, vanity wash Penzance and about four miles to the north the town hand basin. Radiator. of Hayle where the railway offers direct links to London Paddington . The popular town of St Ives is UTILITY ROOM 9.3 miles distant and the Cathedral city of Truro Window to front. Plumbing for washing machinde where a more extensive range of shopping, schooling and tumble dryer. Laminate flooring. Worcester and banking facilities is 22.3 miles distant.
    [Show full text]
  • Minewater Study
    National Rivers Authority (South Western-Region).__ Croftef Minewater Study Final Report CONSULTING ' ENGINEERS;. NATIONAL RIVERS AUTHORITY SOUTH WESTERN REGION SOUTH CROFTY MINEWATER STUDY FINAL REPORT KNIGHT PIESOLD & PARTNERS Kanthack House Station Road September 1994 Ashford Kent 10995\r8065\MC\P JS TN23 1PP ENVIRONMENT AGENCY 125218 r:\10995\f8065\fp.Wp5 National Rivers Authority South Crofty Minewater Study South Western Region Final Report CONTENTS Page EXECUTIVE SUMMARY -1- 1. INTRODUCTION 1-1 2. THE SOUTH CROFTY MINE 2-1 2.1 Location____________________________________________________ 2-1 ________2.2 _ Mfning J4istojy_______________________________________ ________2-1. 2.3 Geology 2-1 2.4 Mine Operation 2-2 3. HYDROLOGY 3-1 3.1 Groundwater 3-1 3.2 Surface Water 3-1 3.3 Adit Drainage 3-2 3.3.1 Dolcoath Deep and Penhale Adits 3-3 3.3.2 Shallow/Pool Adit 3-4 3.3.3 Barncoose Adit 3-5 4. MINE DEWATERING 4-1 4.1 Mine Inflows 4-1 4.2 Pumped Outflows 4-2 4.3 Relationship of Rainfall to Pumped Discharge 4-3 4.4 Regional Impact of Dewatering 4-4 4.5 Dewatered Yield 4-5 4.5.1 Void Estimates from Mine Plans 4-5 4.5.2 Void Estimate from Production Tonnages 4-6 5. MINEWATER QUALITY 5-1 5.1 Connate Water 5-2 5.2 South Crofty Discharge 5-3 5.3 Adit Water 5-4 5.4 Acidic Minewater 5-5 Knif»ht Piesold :\10995\r8065\contants.Wp5 (l) consulting enCneers National Rivers Authority South Crofty Minewater Study South Western Region Final Report CONTENTS (continued) Page 6.
    [Show full text]
  • Bus Services in Cornwall from 29Th March 2020 Welcome to Faqs
    Bus Services in Cornwall From 29th March 2020 Welcome to FAQs Sunday 29th March 2020 will herald the start of If my Operator has changed from First Kernow changes to local bus services across Cornwall. – can I still use the First Kernow ticket? Cornwall Council recently awarded an 8-year contract to Go Cornwall Bus (Plymouth Citybus/Go-Ahead) to Weekly tickets will be accepted until the 4th operate the whole of the county supported local bus April and monthly tickets to the end of April. network. This equates to around half of all bus journeys made in Cornwall. First Kernow will continue to operate “Bundle Tickets” purchased via mTicket will not be commercially within the county. honoured so please contact First for a refund. Services under contract to Cornwall Council will be branded as Transport for Cornwall. Many bus services If I have a different Operator for an inward previously operated by First Kernow will be run by journey than that for the outward journey, Transport for Cornwall. Go Cornwall Bus will be working will my Return Ticket be honoured? with three local operators, namely Hopley’s Coaches, OTS of Falmouth and Summercourt Travel Ltd, to provide the whole supported bus network. Transport for Cornwall services will accept the return ticket purchased on First Kernow buses. Transport for Cornwall is the partnership between Cornwall Council, Go Cornwall Bus and other local Currently, there are no arrangements for First transport providers delivering a high-quality, Kernow to accept return tickets purchased on integrated and customer-focused public transport Transport for Cornwall services.
    [Show full text]
  • Ref: LCAA1820
    Ref: LCAA7152 Offers around £535,000 Carsize Barn, Carsize Lane, Leedstown, Nr. Hayle, Cornwall FREEHOLD Situated in a delightfully tranquil, rural end of lane setting just a few miles from both north and south Cornish coasts, a superb, spacious 3 bedroomed detached barn conversion with additional 1 BEDROOMED DETACHED ANNEXE plus further outbuildings in a generous garden plot of approximately ⅔ an acre. 2 Ref: LCAA7152 SUMMARY OF ACCOMMODATION MAIN HOUSE Ground Floor: kitchen/breakfast room, inner hall, master bedroom with en-suite bath/shower room, 2 further double bedrooms, family bathroom, music room. First Floor: formal dining room, large dual aspect sitting room with woodburning stove. IVY COTTAGE SELF-CONTAINED ANNEXE Kitchen/living/dining room, shower room/wc, double bedroom. Outside: double garage and further large workshop with planning permission to convert into a studio. Additional stone outbuilding, gravelled gated driveway with gravelled parking area for numerous vehicles. Gently sloping lawned front garden, further part wooded garden, extensive rear garden with fruit trees. In all, approximately ⅔ an acre. DESCRIPTION • The availability of Carsize Barn represents a rare and exciting opportunity to acquire a sizeable and highly versatile complex of converted barns in a fabulous rural location, yet just a short walk from village amenities. • The property comprises a large reverse level three double bedroomed, two bath/shower roomed, three reception roomed main house plus a recently converted detached and totally self-contained one bedroomed annexe (Ivy Cottage). Ideal for a dependant relative, guest cottage or as a holiday let to generate useful additional income. • In addition to the accommodation there is further potential to be exploited in the attached barn to Ivy Cottage which currently comprises a double garage plus large workshop which could (subject to planning) be easily incorporated into more 3 Ref: LCAA7152 accommodation/studio space/home office plus a further useful outbuilding adjacent to the main house.
    [Show full text]
  • The Distribution of Ammonium in Granites from South-West England
    Journal of the Geological Society, London, Vol. 145, 1988, pp. 37-41, 1 fig., 5 tables. Printed in Northern Ireland The distribution of ammonium in granites from South-West England A. HALL Department of Geology, Royal Holloway and Bedford New College, Egham, Surrey TW20 OEX, UK Abstract: The ammonium contents of granites, pegmatites and hydrothermally altered rocks from SW England have been measured. Ammonium levels in the granites are generally high compared with those from other regions, averaging 36ppm,and they differ markedlybetween intrusions. The pegmatites show higherammonium contents than any other igneous rocks which have yet been investigated. Ammonium contents are strongly enriched in the hydrothermally altered rocks, includ- ing greisens and kaolinized granites. There is agood correlation between the average ammonium content of the intrusions in SW England and their initial "Sr/*'Sr ratios and peraluminosity. This relationship supports the hypothesis that the ammonium in the granites is derived from a sedimentary source, either in the magmatic source region or via contamination of the magma. Introduction Results Ammonium is present as a trace constituent of granitic The granites rocks, in which it occurs in feldspars and micas substituting isomorphously for potassium (Honma & Itihara 1981). The The new analyses of Cornubian granites are given in Table amount of ammonium in granites varies from zero to over 1. They show a range of 3-179 parts per million NH:, with 100 parts per million, and it has been suggested that high the highest values being found in relatively small intrusions. concentrations may indicate the incorporation of organic- Taking the averagefor each of the major intrusions,and rich sedimentary material into the magma, either from the weighting them according to their relative areas (see Table presence of such material in rhe magmatic source region or 4), the average ammonium contentof the Cornubian granites via the assimilation of organic-rich country rocks (Urano as a whole is 36 ppm.
    [Show full text]
  • Truro 1961 Repairs BLISLAND St
    Locality Church Name Parish County Diocese Date Grant reason BALDHU St. Michael & All Angels BALDHU Cornwall Truro 1961 Repairs BLISLAND St. Pratt BLISLAND Cornwall Truro 1894-1895 Reseating/Repairs BOCONNOC Parish Church BOCONNOC Cornwall Truro 1934-1936 Repairs BOSCASTLE St. James MINSTER Cornwall Truro 1899 New Church BRADDOCK St. Mary BRADDOCK Cornwall Truro 1926-1927 Repairs BREA Mission Church CAMBORNE, All Saints, Tuckingmill Cornwall Truro 1888 New Church BROADWOOD-WIDGER Mission Church,Ivyhouse BROADWOOD-WIDGER Devon Truro 1897 New Church BUCKSHEAD Mission Church TRURO, St. Clement Cornwall Truro 1926 Repairs BUDOCK RURAL Mission Church, Glasney BUDOCK RURAL, St. Budoc Cornwall Truro 1908 New Church BUDOCK RURAL St. Budoc BUDOCK RURAL, St. Budoc Cornwall Truro 1954-1955 Repairs CALLINGTON St. Mary the Virgin CALLINGTON Cornwall Truro 1879-1882 Enlargement CAMBORNE St. Meriadoc CAMBORNE, St. Meriadoc Cornwall Truro 1878-1879 Enlargement CAMBORNE Mission Church CAMBORNE, St. Meriadoc Cornwall Truro 1883-1885 New Church CAMELFORD St. Thomas of Canterbury LANTEGLOS BY CAMELFORD Cornwall Truro 1931-1938 New Church CARBIS BAY St. Anta & All Saints CARBIS BAY Cornwall Truro 1965-1969 Enlargement CARDINHAM St. Meubred CARDINHAM Cornwall Truro 1896 Repairs CARDINHAM St. Meubred CARDINHAM Cornwall Truro 1907-1908 Reseating/Repairs CARDINHAM St. Meubred CARDINHAM Cornwall Truro 1943 Repairs CARHARRACK Mission Church GWENNAP Cornwall Truro 1882 New Church CARNMENELLIS Holy Trinity CARNMENELLIS Cornwall Truro 1921 Repairs CHACEWATER St. Paul CHACEWATER Cornwall Truro 1891-1893 Rebuild COLAN St. Colan COLAN Cornwall Truro 1884-1885 Reseating/Repairs CONSTANTINE St. Constantine CONSTANTINE Cornwall Truro 1876-1879 Repairs CORNELLY St. Cornelius CORNELLY Cornwall Truro 1900-1901 Reseating/Repairs CRANTOCK RURAL St.
    [Show full text]
  • CORNWALL. [.I.Jlllly'
    1264. r.AB CORNWALL. [.I.JllLLY'. FARMERs-continued. Matthew Thos. Church town, Tresmere, Meager H.St. Blazey, Par Station R.S.O Martin John, Kingscombe, Linkinhorne, Launceston Meager S. St. Blazey, Par Station RS.O Callington RS.O Matthews Thomas & Son, Blerrick, MeagerTbos. Pengilly, St. Erme, Truro Martin J. Lanyon, Loscombe, Redruth Sheviock, Devonport Medland Mrs. Mary & Sons, Beer, MartinJ.Latchley,Gunnislake,Tavistock Matthews E.Mtdlawn,Pensilva,Liskeard Marhamchurch, Stratton R. S. 0 Martin John, Newton, Callington R.S.O l\Iatthews Mrs.E.Trannaek,Sncrd.Pnznc Medland Henry, Burracott,Poundstock, Martin J.Summercourt,Grampound Rd Matthpws Mrs.George Henry, Chenhale, Stratton R.S.O Martin John, Treneiage, St. Breock, St. Keverne, Helston Medland J. Combe, Herodsfoot, Liskrd )\Tadebridge RS.O Matthews Henry, Winslade, Stoke Medland Richard, Court barton, Mar- Martin J. Trewren, Madron, Penzance Climsland, Callington R.S.O hamchurch, Stratton R.S.O MartinJ.We. moor,Whitstone,Holswrthy Matthews Jas. Nancrossa, Carnmenellis, Medland Thomas, Crethorne, Pound- Martin John, Wishworthy," Lawhitton, Penryn stock, Stratton RS. 0 Launceston MatthewsJohn, Antony, Devonport Medland William, Whiteley, Week St. Martin John Lewis, Treneddon, Lan- Matthews John, Goongillings, Constan- Mary, Stratton RS.O sallos, Polperro RS.O tine, Penryn Medland William, Woodknowle, Mar- Martin In. Symons, Tregavetban, Truro Matthews John, ReJeatb, Camborne hamcburcb, Stratton RS.O Martin J. Albaston,GunnisJake,Tavistck Matthews John, Trendeal, Ladock, Medlen J.Coombe,Duloe,St.KeyneRS.O Martin Joseph, Carnsiddia,St.Stythians, Grampound Road Medlen John, Tbe Glebe, Duloe RS.O Perran-Arworthal R.~.O Mattbews In. Trevorgans, St. Buryan, Medlin M. Cbynoweth, MaOO, Pelll'yn Martin Joseph, Nanpean, St.
    [Show full text]
  • Gently Sloping
    LOCAL LANDSCAPE CHARACTER ASSESSMENT – NEIGHBOURHOOD PLANNING Carn Brea – Gently Sloping CHARACTER TYPE: DATE OF ASSESSMENT: T Gently Sloping 22/02/2021 t PARISH : Carn Brea ASSESSOR :Florence h MacDonald e Character Landscape reference guide Your landscape description Attribute Record your descriptive information for each heading Topography What is the shape of the land? - flat, shallow, steep, The land undulates gently in a broad basin between the steep slopes leading to Carn Brea and Four Lanes ​ uniform, undulating, upland, ridge, plateau respectively. Photo 1. and drainage ​ ​ Is there any water present? - estuary, river, fast ​ flowing stream, babbling brook, spring, reservoir, pond, Some water gathers in rainier weather with large puddles and marshy areas. The source of the Red River, which marsh follows the boundary of the Parish, is adjacent to Bolenowe.There are lots of gullies present along Cornish hedges that were used to manage the drainage of fields. Photo 2, 3 and 4. Near the flowing water is also more woodland ​ ​ which forms part of the county wildlife site Newton Moor. At the edge of the Parish boundaries there are also flood ​ ​ zones near rivers, particularly on the western side. see: Supporting documents/Appendices of maps/ 5. Flood zones 2&3. Supporting info OS Map; Cornwall Council mapping; aerial photographs Biodiversity What elements of the character could support There is a lot of natural coverage consisting of ferns, bracken, pockets of trees, with established Cornish hedges protected species (guidance from Cornwall Wildlife Trust providing the majority of field boundaries, interspersed with outcrops of granite. These are surrounded by/covered ​ CWT) with bracken, blackberries, brambles, and heather.
    [Show full text]
  • 39 Bus Time Schedule & Line Route
    39 bus time schedule & line map 39 Helston - Leedstown - Camborne View In Website Mode The 39 bus line (Helston - Leedstown - Camborne) has 2 routes. For regular weekdays, their operation hours are: (1) Camborne: 7:34 AM - 5:42 PM (2) Helston: 7:40 AM - 5:35 PM Use the Moovit App to ƒnd the closest 39 bus station near you and ƒnd out when is the next 39 bus arriving. Direction: Camborne 39 bus Time Schedule 31 stops Camborne Route Timetable: VIEW LINE SCHEDULE Sunday Not Operational Monday 7:34 AM - 5:42 PM Helston School Bus Bays, Helston Tuesday 7:34 AM - 5:42 PM Bospowes, Helston Wednesday 7:34 AM - 5:42 PM Tyre Centre, Helston Thursday 7:34 AM - 5:42 PM Falmouth Road, Helston Friday 7:34 AM - 5:42 PM Tesco, Helston Saturday 7:34 AM - 5:42 PM Kingsley Way, Helston Trengrouse Way, Helston The Parade, Helston Meneage Street, Helston 39 bus Info Direction: Camborne Meneage Street, Helston Stops: 31 Meneage Street, Helston Trip Duration: 51 min Line Summary: Helston School Bus Bays, Helston, Blue Anchor, Helston Bospowes, Helston, Tyre Centre, Helston, Tesco, 36 Coinagehall Street, Helston Helston, Kingsley Way, Helston, The Parade, Helston, Meneage Street, Helston, Blue Anchor, Helston, St St Johns Close, Helston Johns Close, Helston, Hill Top Garage, Sithney Common, Merther Close, Sithney, Poldown Caravan Hill Top Garage, Sithney Common Park, Sithney, Bus Shelter, Carleen, Godolphin Arms, Godolphin Cross, Godolphin Mill, Townshend, Merther Close, Sithney Institute Row, Townshend, Rodwill Close, Leedstown, Merther Close, Sithney Civil
    [Show full text]
  • Note8 on Cornish Mineral Localities
    92 X.--Note8 on Cornish Mineral Localities. By 3. H. Co~Iss, F.G.S. HE following brief notes may be of some interest to students of T Cornish Mineralogy. I st.--l~Ew LocaLItIEs. Seheelite.--This occurs as a partial replacement of Wolfram at East Pool Mine, where it was first noticed by Mr. Cornelius Beringer, of Redruth, an Associate Member of this Society. Hitherto it has "only been found at Pengelly Croft, Huel Mandlin, and Levant Mine, in Cornwall, ~ and at Huel Friendship, in Devon. Montmorillonite.mThis member of the chloropal group of minerals t has recently been foucrd at Great Retallack Mine, in Perranzabuloe, Cornwall. It is associated with decomposing pyrites, but on careful separation yields the following results on analysis. Silica .............. 47"9 Peroxide of iron ........ 1"2 Alumina ............ 27" 1 Water .............. 23"0 Potash and loss .......... -8 I00'0 This agrees very closely indeed with the formula A12 Ha O~, 3SiOs + 2H20 , occupying the aluminous end of the same series in which ehloropal occupies the terruginous end. No doubt this Montmorillonite is a secondary product, .and therefore of little interest to mineralogists who care for nothing but crystallography, but it is interesting to chemical mineralogists as illustrating the con- stant tendency of the operations in nature's laboratory to produce definite chemical compounds rather than mere mixtures. Millerit~--This I have recently found in a vein traversing black silurian schist at Gerrans Bay, in Col~wall, in a cavity lined with pale * See Handbook, to the Mineralogy of Cornwall and Devon, part 2, p. 90 ; and Min.
    [Show full text]
  • Cornwall & Isles of Scilly Landscape Character Study
    CORNWALL AND ISLES OF SCILLY LANDSCAPE CHARACTER STUDY Overview and Technical Report Final Report May 2007 Forward The Cornwall and Isles of Scilly Landscape Character Study 2005-2007 has been developed as a joint project between the local authorities in Cornwall, the National Trust and the AONB units of Cornwall, the Tamar Valley and the Isles of Scilly supported by the Countryside Agency (now Natural England). Diacono Associates in conjunction with White Consultants were appointed in 2005 to undertake a Landscape Character Assessment for Cornwall and the Isles of Scilly. This updates the Cornwall Landscape Assessment published in 1994. This report sets out the methodology by which Landscape Character Areas have been identified, based on Landscape Description Units, and brings together the main findings of the study including the initial consultation stages. Part of the study included an assessment of landscape sensitivity at the level of the Landscape Description Units. This aspect of the study is however to be the subject of further investigation and the findings set out in this report have not therefore been endorsed at this stage by the participating organisations. This report will form the basis of a number of areas of further research and investigation including landscape sensitivity, and seascape assessment as well as the further consultation on the draft Landscape Character Area Descriptions. Cornwall and Isles of Scilly Landscape Character Study 2005-2007 Project Management Group Oct 2007 Final Report Cornwall and the Isles of
    [Show full text]
  • Election of Parish Councillors for Altarnun Parish Council on Thursday 6 May 2021
    RETURN OF RESULT OF UNCONTESTED ELECTION Cornwall Council Election of Parish Councillors for Altarnun Parish Council on Thursday 6 May 2021 I, Kate Kennally, being the Returning Officer for the Parish of ALTARNUN PARISH COUNCIL at an Election of Parish Councillors for the said Parish report that the latest time for delivery of notices of withdrawal of candidature, namely Thursday 8 April 2021, having passed, the persons whose names appear in the accompanying list stood validly nominated and were duly elected without a contest. Name of Candidate Home Address Description (if any) BLOOMFIELD (address in Cornwall) Chris BRANCH 3 Penpont View, Five Lanes, Debra Ann Altarnun, Launceston, Cornwall, PL15 7RY COLES 17 St Nonnas Close, Altarnun, Lauren Launceston, PL15 7RU DOWLER (address in Cornwall) Craig Nicholas GREEN The Dovecote, Tredoggett Farm, Carl Stuart Altarnun, Launceston, Cornwall, PL15 7SA HOSKIN The Bungalow, Trewint Marsh, Tom Launceston, Cornwall, PL15 7TF KENDALL (address in Cornwall) Jason John MARSH 1 Todda Close, Bolventor, PL15 Health And Social Care Managing Leah Michelle 7FP Director SMITH (address in Cornwall) Polly Jane SMITH (address in Cornwall) Wesley Arthur Dated Tuesday 13 April 2021 Kate Kennally Returning Officer Printed and published by the Returning Officer, 3rd Floor, South Wing, County Hall, Treyew Road, Truro, TR1 3AY RETURN OF RESULT OF UNCONTESTED ELECTION Cornwall Council Election of Parish Councillors for Antony Parish Council on Thursday 6 May 2021 I, Kate Kennally, being the Returning Officer for the Parish of ANTONY PARISH COUNCIL at an Election of Parish Councillors for the said Parish report that the latest time for delivery of notices of withdrawal of candidature, namely Thursday 8 April 2021, having passed, the persons whose names appear in the accompanying list stood validly nominated and were duly elected without a contest.
    [Show full text]