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Montmorillonite from
Meldon Aplite Quarry, Okehampton Hamlets, West Devon, Devon, England, UK


Locality type:Quarry
Classification
Species:Montmorillonite
Formula:(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Montmorillonite data
Locality Data:Click here to view Meldon Aplite Quarry, Okehampton Hamlets, West Devon, Devon, England, UK
Data Identifiers
Mindat Occurrence Record ID:13718
Long-form Identifier:1:3:13718:2
GUID (UUID V4):2ddca68f-fb6a-4cf5-8262-1c5c648d460c
Nearest other occurrences of Montmorillonite
0.5km (0.3 miles) Meldon Quarry, Okehampton Hamlets, West Devon, Devon, England, UK
85.5km (53.1 miles) Great Retallack Mine, Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, Cornwall, England, UK
85.9km (53.4 miles) Treamble Mine (incl. Garden Quarry), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, Cornwall, England, UK
References
Reference Search (possible matching items)
Journal (article/letter/editorial)
note on the occurrence of columbite in the Meldon aplite, Devonshire. By OLEG YON K~ORRING, M.Sc. Department...South Devon in April 1951, material was collected from the Meldon aplite quarry near Okehampton, to the...the north-west of the Dartmoor granite, which on examination has proved to contain the mineral columbite...minerals have previously been recorded from the Meldon aplite quarryfl 2 They are partly found as accessory...accessory constituents in the main fine-grained aplite rock consisting of orthoclase, albite, and quartz, or
Journal (article/letter/editorial)
azurite, olivenite, 428; coronadite, 343 Embleton quarry, Cockermouth: alunite, dickite, thaumasite, zunyite...pharmacosiderite, plumbojarosite, seorodite, 430 Devon Bedford United mines, Tavistock: eornubite, 2 Ford...scheelite, 921 Meldon aplite quarry, Okehampton: bavenite, 577 Meldon limestone quarry, Okehampton: scheelite...Sticklepath, Okehampton: scheelite, lxxviii, 921 Red-a-yen Brook mine, Meldon, Okehampton: helvine, 1511ingite...nah' Achlaise, Ledmore: cromaltite, 767 Lettermore quarry, Loch Loyal: nordmarkite, 389 Loch Bad ham Ban
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
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
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
FLUORESCENT ½ x ½ ins rock Fluorescent green Al SiO Devon England Large brown well formed dodecahedral Madagascar...hard white sphere shaped nodule. Newhaven Sussex, England lxlins S0p ALUMINITE Al SO/4 ALUMINOTSCHERMAKITE...- - - AMAZONITE Pure green cleavage Landsverlc quarry, Evje, Norway lxl S0p ALAMOSITE fcLp 10 g:...PbAgSbS lx2 S0p 2x2 £1 2x3 £I .SO Staffordshire England Rich white to faintly blue masses ANHYDRITE CaSO...with Chrysotile, pale grey-green County Bridge Quarry,Lizard ,Cornwall MgFeSiO massive. Minas Gerias
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...501 A x A ins rock Fluorescent green Al SiO Devon England FLUORESCENT Large brown well formed dodecahedral..._______ Ba Ca 00/3__________ Newhaven Sussex, England lxlins50p 1x2 £1 Pure hard white sphere shaped...Arizona Pure green cleavage AMAZONITE Landsverk quarry, Evje, Norway Ixl 50p lx2£l 11 felspar group____________
Catalog/List
the speci es. Locality. including name of mine or quarry, nearest town and county, and six figure National...Loanhead quarry TallskerBay Whyte'a Cleuch Loanhead quarry Port Glasgow Loanheadquarry Loanhelld quarry Loanhead...Loanhead quarry Benalltmlne BMS NATIONAL REFERENCE COUECTION Ecton.Staffs. Ecton.Staffs. Scordale,Cumbria...Beach Clevedon Beach Clevedon Beach Clevedon Beach Meldon apllte q. Fallowfield mine East Gunnislake Struan...Avon Bristol.Avon Bristol.Avon Bristol.Avon Okehampton,Devon Hexham,Northumbr. Cornwall Cutting on A863
Journal (article/letter/editorial)
was read : - ' The Geology of the Meldon Valleys, near Okehampton, on the Northern Verge of Dartmoor...main railway-line, from a point a little east of Meldon Viaduct to near Sourton, and the ridge of Dartmoor...slight local deviations, strike north-east and south-west and dip north-westwards, the mean angle of dip being...is wollastonite, but at contacts ~ with the Meldon Aplite garnet, idocrase, seapolite, axinite, and lepidolite...(c) Granitoid veins, subdivided into: (1) The Meldon Aplite and its associates ; (2) Fine-grained granites
Catalog/List
CO/3 OH blue micro crystals on rock. (Greystones Quarry,Lezant,Cornwall) £2.00 lx H £3.50 2 076 CALEDONITE...Quartz with micro spots of Native Copper. (Kingston Quarry,Cornwall) 1x1 £2 553 TETRAHEDERITE (Cu Fe) Sb S...cleavages with cerussite and or Pyrolusite (Merehead Quarry, Mendips,Somerset) H x B £2 269 MENDIPITE Pb/3...CORKITE Pb Fe PO/4 SO/4 This is a rare mineral for England, deep yellow radiations in goethite (Iron Crag...metallic fibrous on' 2cm white dolomite. ' (Lengenbach Quarry,Binn Valley Switzerland) £4.50 163 GALENA Lead
Journal (article/letter/editorial)
communication was read :— " The Geology of the Meldon Valleys, near Okehampton, on the Northern Verge of Dartmoor...main railway line, from a point a litte east of Meldon Viaduct to near Sourton, and the ridge of Dartmoor...occupied by Black Tor, High Wilhays, Tes Tor, and West Mill Tor, being the greater part of the valley of...of the Redaven and a portion of the valley of the West Okement. The southern extreme of this area is occupied...slight local deviations, strike north-east and south-west and dip north-westwards, the mean angle of dip being
Journal (article/letter/editorial)
Avelinoite, relation to wardite, 598. Axinite, Devon, anal., opt., 45. AXON (H. J.), The Gibeon meteorite...Australia, alkali feldspar, anal., d2oi, 489. Bosahan quarry, Falmouth, Cornwall, biotite, 2IO. BOWDEN (P.)...WEIR (A. H.), Zeolites in sediments of south-east England, 48o. BROWN (W. L.), see GRUNDY (H.), I56. Btn~WORTH(D...and HOWIE (R. A.), Axinites from Devon, 45; Topaz from the Meldon aplite, 717. Chikla, India, juddite, 317...Chile, 519. Clark's Ghut, Jessup Village, Nevis, West Indies, coquimbite, tamarugite, 939. Clear Creek
Book
Igneous Rocks of South-West England THE GEOLOGICAL CONSERVATION REVIEW SERIES The comparatively small...and M. C. Gyopari S. Igneous Rocks of South-West England P. A. Floyd, C. S. Exley and M. T. Styles 6...Thames D. R. Bridgland Igneous Rocks of South-West England P. A. Floyd Department of Geology, University...study, or criticism or review, as permitted under the UK Copyright Designs and Patents Act, 1988, this publication...licences issued by the Copyright Licensing Agency in the UK, or in accordance with the terms of licences issued
Journal (article/letter/editorial)
OCCURRENCE OF PETALITE DEVONSHIRE. OKEHAMPTON, APATITE IN THE MELDON APLITE, W. F. P. MclrNrocr. Minerol'og...previously been found in Britain but in the Meldon aplite it is quite common. It is pinkish to red in...clay-Iike Under the material which has been called montmorillonite by earlier writers. microscope the clayJike...perpendicular thereto. The apatite also found in the aplite is no doubt of pneumatolytic ongrn and showed eight
Catalog/List
EOCKS AHD MINERALS Ho U available. NEW STOCK Devon and Cornwall pages 8 S 3 : ALLOPHANE, ARTHURITE...Cu Al AsO SO/4 small green plates in and on rock (West Caradon Mine,Cornwall) » x H £4 510 CHALCOCITE copper...Quartz with micro spots of Native Copper. (Kingston Quarry,Cornwall) 1x1 £2 - 553 TETRAHEDERITE (Cu ?e) ;'L...cleavages with cerussite and or Pyrolusite (Merehead Quarry, Mendips,Somerset) 54 x 54 £2 269 MENDIPITE Pb/3...CORKITE Pb Fe PO/4 SO/4 This is a rare mineral for England, deep yellow radiations in goethite (Iron Crag
Catalog/List
rful , 18 miles NNW of St I cm £6 Ives. Cornwall. England No location details !cm £4 Colo urless to yellow...Ix ! £4 l x2 £8 New East Wheal Russell mine, Devon ,Eng land Madagascar ½ x½ £2.50 lins£4 I x½ £4...near Creston . Wyoming ,U.S. A Newhaven Sussex, England l x l £3 l x2 £5 While crystals well covering...paper available. Rich grey crystalline mass. Saga Quarry, Tvedalen near Larv ik, Norway Ix I £1.50 Ix I...Chrysotile. pale grey-green mass ive. County Bri dge Quarry,Lizard ,Cornwall Jx I £ I I x2 £2 Loch Scridain
Journal (article/letter/editorial)
OCCURRENCE OF PETALITE DEVONSHIRE. OKEHAMPTON, APATITE IN THE MELDON APLITE, W. F. P. MclrNrocr. Minerol'og...previously been found in Britain but in the Meldon aplite it is quite common. It is pinkish to red in...clay-Iike Under the material which has been called montmorillonite by earlier writers. microscope the clayJike...perpendicular thereto. The apatite also found in the aplite is no doubt of pneumatolytic ongrn and showed eight
Catalog/List
RICHARD ’ BYWAYS, , COBHAM ENGLAND MINERALS T AY L E R C L 0 00 E 2 0 B U R S T E A D P h one SURREY...OH good blue micro crystals on rock (Greystones Quarry,Lezant,Cornwall) 14 X 14 £2.00 lx 14 £3.50 2 ...Quartz with micro spots of Native Copper. (Kingston Quarry,Cornwall) 1x1 £2 553 TETRAHEDERITE (Cu Fe) Sb S...cleavages with cerussite and or Pyrolusite (Merehead Quarry, Mendips,Somerset) S x « £2 219 MARICOPAITE Pb...Omphacite.An attractive Eclogite rock from (Nordfjord,.West Norway) • 1x2 £1.30 2x2 £2.70 • 2x4 £6 112 CORUNDUM
Catalog/List
No. Byways, 20 Burstcad Close, Cobham, Surrey, England KTll 2NL EMAIL 2007 104 Phone 01932 862340 ...THAUSITE Modum, Buskerud,Norway 59 BOEHMITE Saga Quarry, Tvedalen, Norway Brown-purple mass in matrix Creamy...--· - . . - - ------ -·-··-·-· ---·7 ANNITE Saga Quarry, Tvedalen near Larvik, Norway 696 CHROME DIOPSIDE...lx2 £15 lxl £4 lx2 £8 2x2 £16 126 DIASPORE Saga Quarry, Tvedalen. Norway 1060 KORNERUPINE Bjordammcn,...lxl 90p lx2 £1.80 2x2 £4 Mica 295 NATROLITE Saga Quarry, Tvedalen, Norway Orange to red in feldspar.(Hydrothcrmal
Journal (article/letter/editorial)
main clay minerals used as bleaching earths, montmorillonite and attapulgite (palygorskite), including theories...for the non-swelling forms of montmorillonite, e.g. calcium montmorillonite, is incorrect. The range of...occurrence of palygorskite given as Shetland Isles (England), but, of course, this is a very small error when...held responsible for the bleaching action of montmorillonite and of the supposed effect of acid-activation...FENNING (P. J.). Geology of the country around Okehampton (Explanation of one-inch geological sheet 324
Journal (article/letter/editorial)
occurrence of palygorskite given as Shetland Isles (England), but, of course, this is a very small error when...held responsible for the bleaching action of montmorillonite and of the supposed effect of acid-activation...FENNING (P. J.). Geology of the country around Okehampton (Explanation of one-inch geological sheet 324...albite-rich aplites, the largest of these being the Meldon Aplite, which crystallized outside the granite with...much to illustrate the nature of the area. The Okehampton district was described by De la Beche in the
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....------------6 ALBITE Kragero Norway 933 ANATASE Hingston Quarry,Comwall Black micro crystals in crystalline feldspar...501 ALLOPHANE New East Whcal Russell mine, Devon ,England variety VIRIDINE (Mangan rich variety) Olive... £4 lx2 £6 Ca SO/4 23 ANHYDRITE Staffordshire England Rich white to faintly blue masses lx2 80p 2x2 £1
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...St Kew,Cornwall; Shallowfield Bridge,SouthMolton,Devon Tynebottom mine,Alston.CUm~ria mercury Chatsworth
Catalog/List
I Byways, 20 Burstead Close, Cobham, Surrey, England KTll 2NL Phone 01932 862340 EMAIL richard.tayler@minerals...£5 -------------------------933 ANATASE Hingston Quarry,Comwall Black micro crystals in crystalline feldspar...501 ALLOPHANE New East Wheal Russell mine, Devon ,England grey bleby small botryoidal with possible Brochantite..._--~(~OI_~·-·· · -·- ·· ···ALUMINITE Newhaven Sussex, England Pure hard white sphere shaped nodule. Ixlins80p..._ _P_b_so_,_4____ 23 ANHYDRITE Staffordshire England Rich while to faintly,bluemasses lx2~0p ________
Journal (article/letter/editorial)
Scotland; 116 244 H. G. M A C P H E R S O N from England (75 of which are from Cornwall); 28 from Ireland;...emerges. Thus, of the 130 species, 64 are from England (48 from Cornwall); 35 from Scotland; 19 from Ireland;...regional lists as, for example, for SW England, Pennines and northern England, Wales, Ireland, Scotland, etc...(1892) A Handbook to the Mineralogy of Cornwall and Devon. London. Dana, E. S. (1892) The System of Mineralogy... P. S. (1982) The State and Status of Geology in UK Museums. London: Geol. Soc., Misc. Paper No. 13.
 
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