 | Block, S., Ganne, J., Baratoux, L., Zeh, A., Parra-Avila, L. A., Jessell, M., Ailleres, L., Siebenaller, L. (2015) Petrological and geochronological constraints on lower crust exhumation during Paleoproterozoic (Eburnean) orogeny, NW Ghana, West African Craton. Journal of Metamorphic Geology, 33 (5) 463-494 doi:10.1111/jmg.12129 | Journal (article/letter/editorial) | | during Paleoproterozoic (Eburnean) orogeny, NW Ghana, West African Craton S. BLOCK,1 J. GANNE,1 L. BARATOUX...high-grade ortho- and paragneisses from northwestern Ghana, forming part of the Paleoproterozoic (2.25–2.00...slices during the Eburnean orogeny. The craton in NW Ghana is made of distinct fragments with contrasting tectono-metamorphic...and high-grade metamorphic rocks of northwestern Ghana, in the southeastern West African Craton. The data...LEONE OF TO G O BN BENIN 10°N Study area Bu GHANA HC LIBERIA KTGD Baoulé-Mossi domain Kénéma-Man |  | | Journal (article/letter/editorial) | | breakage on coarse gangue rejection for an orogenic gold ore P. Bode, T.D.H. McGrath & J.J. Eksteen To cite...breakage on coarse gangue rejection for an orogenic gold ore, Mineral Processing and Extractive Metallurgy...breakage on coarse gangue rejection for an orogenic gold ore P. Bode, T.D.H. McGrath and J.J. Eksteen WA...pulse SELFRAG Lab devices treated a Ballarat region gold ore to achieve a particle size of ≤2.00 mm to...Accepted 27 November 2019 Introduction Increasingly, gold (Au) ore is extracted from loweryielding resource |  | | Book | | The Metallogeny of Lode Gold Deposits A Syngenetic Perspective Ulrich Kretschmar (Late) Former President...able to finish the research he had begun with this project in his lifetime. Not because he expected to die...strongly in the theory of the syngenetic process in gold deposits. Laura Carter Kretschmar March 2015 I obtained...the Haileybury School of Mines and graduated as a gold medallist in 1965. From there I attended Queen’s...exploration targets, which led to the 1987 paper on gold in the Beardmore-Geraldton greenstone belt. This |  | | Journal (article/letter/editorial) | | variety of gneisses of igneous origin, but also a group of paragneisses which, along with presumably contemporaneous...forms the standard account of the geology of this region. The present paper gives a description of the gneisses...forsterite. [The colourless forms of the humite group have maximum refractive indices below the a of forsterite...Spinel 2-4% 99-90 The constituent minerals form a group which has frequently been recorded previously from...pargasite is t h e most frequent mineral in this group of paragneisses. Exceptionally it forms k n o t |  | | Book (edition) | | chemical to how to clas- analyses to deter- — mine one of the fundamental properties of minerals the...saying that “all that glitters is not gold,” and the names fool ’s gold and false galena, express the fact... Even if one by collecting them, lives in a region that many specimens, it is possible to find something...forms of is, therefore, the Fig. 3-2. Fluorite, group of cubic crystals. Fig. 3-3. Quartz crystal....unimportant respect of magnitude. Figure 3-5 shows a group of gypsum crystals from Naica, Mexico, the largest |  | | Report (volume) | | Helen S Earhart, a.od about three months later the proJect was transferred to the writer. Josmh Bndge and...de geologia praktiCa] Bologna Gold Coast Gcol Survey Dept Rept ___ Gold Coast Report of the Geological...OF BAUXITE DEPOSITS OF WORLD Gold Coast Geol Survey BulL _______ _ Gold Coast GeologiCal Survey, Bulletm..._____________________ _ Teachers' Journal Accra, Gold Coast Technlka __________________________ _ Techmka...Apuha distnct and near Gonzm (north of the Tneste region) The locatiOn of deposits, mcludmg alumte and leuCite |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | have been undertaken. The initial stages of this project were undertaken by the late Horace Winchell of...present editor, Philip Manor, without whom this project would never have seen the light of day. Finally...Species containing more than one anion or anion group may be assigned to a separate class or may be assigned...specifies the atomic (cation to anion, or to anion group) ratio for the mineral. This and the remaining numbers...appropriate Dana number. When recognized, membership in a group is noted. Occasionally, the phrase “an inadequately |  | | Book (edition) | | 35 mm, Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit...to the chemical formula, allegiance to a mineral group, symmetry and crystal structure as well as the strongest...chemical formula, structure (crystal system, space group, and unit cell dimensions), and at least some other...site occupancy. The Sb members of the tennantite group (2.G) will serve as a good example: tetrahedrite...registered in this book (e.g. in the amphibole group). For more detailed information see "Dana's System |  | | Book | | ascination of gold 146 The auriferous claims 148 The gold mine of Morro Velho 153 The Mine of Passagem...in P'ianc6 157 Go! fe\"er in Serra Pelada 168 The gold rushes of the decade of 1980 174 The mysterious...topaz 385 T he imperial topaz of Ouro Preto 393 The Mine of Capao do Lana 397 The imperial topaz of Antonio...exotic group of the garnets 408 Garnets of the pyralspite series 411 essartine 414 ~ he Mine of Pedra...diversified mica group 602 The clay mineral groufa 604 The tectosilicate subc ass 605 The feldspar group 608 The |  | | Book | | position of 56Fe; and (iv) the abundance peaks in the region past iron at the neutron closed shell positions...mixing caused by the convection, the entire unstable region evolves essentially chemically homogeneously—replenishing...of burning region (central or shell burning) and depleting the fuel elsewhere in that region at the same...burning of this fuel then commences outside that region. Table 1 summarizes the burning stages and their...maximum temperatures that have been reached in each region in the preceding hydrostatic burning stages (Table |  | | Book (volume) | | Illustrated by American History; The Tariff Question; The Gold Question; The Silver Question; &c. { Cleveland...part). China: Language (in part), Childrenite; Chlorite; Chromite; Chrysocolla; Clintonite; Cobaltite;...Superintendent Frontier Surveys, India, 1892-1898. Gold Medallist, R.G.S., London, 1887. Author of The Indian...import duty on tea and other commodities was the project of Charles Towpshend, and was carried into effect...market every Saturday. CHATHAM ISLANDS, a small group in the Pacific Ocean, forming part of New Zealand |
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