 | | Journal (article/letter/editorial) | | niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire OLEG VON KNORRING AND ERIC CONDLIFFE...A number of rare-element minerals from the Meldon aplite are described, e.g. native arsenic and antimony...columbite-tantalite series. THE Meldon aplite, near Okehampton, Devon (grid ref. SX 573 927), is a highly...north-west of the main Dartmoor granite (Worth, 1920). This lithium- and fluorine-rich aplite, together...1973, 1976) have given admirable accounts of the Meldon axinite, topaz, Li-A1 micas and lithian tourmaline |  | | Journal (article/letter/editorial) | | RYBACK 42 Bell Road, Sittingbourne, Kent ME10 4EB, England AND PETER C . T A N D Y Department of Mineralogy...British Museum (Natural History), London SW7 5BD, England T n E supplementary lists of British Isles minerals...recently. The classic minerals of Cornwall and Devon are splendidly described by Embrey and Symes (1987)...known from the British Isles, and 580 or so from England. Of these latter, about 116 are listed here as...gibbsite, etc. in fissure-fill in limestone, Woodleaze quarry, Tytherington, Avon (Alabaster, 1989a). Andersonite |  | | 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 |  | | Journal (article/letter/editorial) | | columbite. Rarer unusual constituents are ancyIite, fersmite, niobian rutiie, eschynite, andradite, glaucophane...Montana in Ravalli County, in the headwatersof the West Fork of the Bitterroot River along the eastern flank...Woods, Beaver,and SheepCreeks,all tributaries to the West Fork Bitterroot River (Fig. 1). The purpose of this...columbite was discoveredat Sheep Creek in 1953.Fersmite was first detectedin the columbite ore in January...strikes N. 60-70' W. and dips steeply northeast. The West Fork Bitterroot River north of Sheep Creek apparently |  | | Journal (article/letter/editorial) | | minerals: minerals of the pyrochlore subgroup and fersmite in the coarse-grained unit, and minerals of the...and W), respectively. For pyrochlore-microlite, fersmite and rynersonite, sample current 20 mA and counting...cleavelandite unit (Fig. 3d; Čech, 1973). Microscopic fersmite was found as a rare late mineral associated with...Ta/(Ta+Nb) = 0.96 to 0.98, Mn/(Mn+Fe) = 0.22 to 0.35; fersmite from the coarsegrained unit has Ta/(Ta+Nb) = 0...Mineralogy and petrogenesis of layered pegmatite-aplite dikes in the Mesa Grande district, San Diego County |  | Baldwin, J. R., Hill, P. G., Finch, A. A., von Knorring, O., Oliver, G. J. H. (2005) Microlite-manganotantalite exsolution lamellae: evidence from rare-metal pegmatite, Karibib, Namibia. Mineralogical Magazine, 69 (6) 917-935 doi:10.1180/0026461056960299 | Journal (article/letter/editorial) | | KY16 9AL, UK Department of Geology and Geophysics, University of Edinburgh, Edinburgh EH9 3JW, UK School...Earth Sciences, University of Leeds, Leeds LS2 9JT, UK ABS TR ACT We have analysed a rare occurrence of...locus of the solvus if they are the tantalite and fersmite-rynersonite. The actual products of exsolution;...Unpublished PhD thesis, University of St. Andrews, UK. Baldwin, J.R. (2000) Fractionation trends, Rb, Cs...I.G. Gass, editors). Oliver and Boyd, Edinburgh, UK von Knorring, O. (1985 ) Some mineralogical, geochemical |  | | Journal (article/letter/editorial) | | within the core and along the eastern ¯anks of the west-plunging Separation Narrows antiform (Blackburn...from the main mass for a distance of 750 m to the west and comprises four pegmatite lenses (Great White...pegmatite ± 15 by 84 m, Swamp pegmatite ± 6 by 56 m and West pegmatite ± 12 by 122 m). The western limit of the...(ii) as monomineralic lenses in garnet-muscovite aplite. The ®rst unit contains the bulk of the petalite...feldspar-petalite with lenses of much ®ner-grained muscovite aplite. The second unit is not common and is characterized |  | | Book | | 10:215-217 ADULARIA Adu Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54...ANALCIME Natrolite and analcime from Eckman Creek quarry. Waldport. Oregon (by M. Groben) 1:153, 1:173,...23:88-90 ANCYLITE Calcian ancylite from [the Keystone quarry near Cornog,] Pennsylvania: new data (by F. A....13:107-112 ANDERSON, WAYNE --and R. Stinchfield: Pint's quarry. Black Hawk County, Iowa 20:473-479 ANDOVER MINE...Wavellite-Arkansas (by J. S. White, Jr.) 4:294 The Jeffrey quarry [North Little Rock, Arkansas] (by G. Newsom) 9:75-79 |  | | Book | | images' of each other Left: Cerussite from South- West Africa, forming multiple intergrowths Far left:...catastrophic. If the locality is, for example, a working quarry, this may be of little consequence, but if it consists...should also be taken when hammering at the base of quarry faces and cliffs not to dislodge loose boulders...style from country to country. Above: Southwestern England, a traditional mining area. Colours show rock types...areas as the chalk downs of south¬ ern and eastern England. Modem man still uses rocks and minerals for the |
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