 | | Journal (issue) | | affiliated with the Friends of Mineralogy publisher John S. White Division of Mineralogy The Smithsonian...Arthur Roe Famous Mineral Localities: The Brumado District, Bahia, Brazil..................................Thomssen, Walt Risch, Star Northam, Carolyn Wilson, John Muntyan and Wayne DeBrusk assisted with record keeping...Brazil) Pierre and Nellie Bariand (Paris, France) F. John Barlow (Appleton, WI) Ron Bentley (Windsor, CT)...Cureton, David Wilber, Miguel Romero, Richard Webster, John Barlow and Rustam Kothavala made cash donations |  | | Journal (article/letter/editorial) | | localities it was noticed that cubic crystalsof bixbyite were, either wholly or in part, replacedby hausmannite...minerals(Hew- portant contributionshave been made by John de ett and Fleischer,1960), and the GriqualandWest...1108 0861-0128/88/192/1108-1152.50 Mn DEPOSITS, SOUTH AFRICA 1109 Geologic Framework .• •:•:•:•:•:•:•:•:•:•...Stellenbosch). 1110 j. E. DE VILLIERS proximatelynorth-south,and regionalshearingand (includingmetamorphic deposits)...Carboniferousperiod,and an unknown are manganosite, hausmannite, bixbyite,galaxite,jathicknessof Karoosedimentsand lava |  | | Journal (article/letter/editorial) | | Mineralization in the Kalahari Manganese Field, South Africa D. A. D. EVANS,† Tectonics Special Research...University, Auckland Park 2006, Johannesburg, South Africa AND J. L. KIRSCHVINK Division of Geological...enrichment in the Kalahari manganese field, South Africa, in order to assess mineralogical aspects of...manganese-rich cycles constitute the Early Paleoproterozoic Hotazel Formation, with an age of ca. 2200 Ma (Cornell...al., 1996) or 2400 Ma (Bau et al., 1999). The Hotazel Formation lies conformably between the underlying |  | | Journal (article/letter/editorial) | | Enrichment in the Kalahari Manganese Field, South Africa: A new discrimination scheme for Kalahari manganese...Department of Geology, University of Johannesburg, South Africa University College Dublin (UCD), School of Earth...thrust fault in the Kalahari Manganese Field, South Africa has undergone three significant alterations events...Mamatwan-type manganese ore from Mamatwan mine in the south of the Kalahari Manganese Field as a reference...multiple geological settings. The Paleoproterozoic Hotazel Formation of the Kalahari Manganese Field hosts |  | | Journal (article/letter/editorial) | | Stacking variations and nonstoichiometryin the bixbyite-braunite polysomaticmineral group JonlN P. on...University, Tempe, Arizona 85287, U.S.A. AssrRAcr Bixbyite, braunite, neltnerite, and braunite-Il are members...general formula M6O1, (M : Mn, Fe, Ca, Si). They consist of layer modules of (Mn,Fe)-O octahedrastackedin...different thicknesses.In addition to the 2-module bixbyite, the 4-module braunite, and the 8-module braunite-Il...vary between 0 and l0 wt0/0. Fine intergrowths of bixbyite (free of silica) and braunite-Il (5 wto/oSiOr) |  | | Journal (issue) | | 85741 Editor & Publisher Wendell E. Wilson Founder John Sampson White Associate Editors Pierre Bariand Sorbonne...Zeolites and associated minerals from the Palabora mine, Transvaal........................................& R. S. W. Braithwaite The Lake George antimony mine, New Brunswick ..................... 263 by W. E...Kalahari m an g an ese field, C ape Province, South Africa. (See th e article in this issue, b eg in n...d e r n M in e r a l C o l l e c t io n CURATION John Sampson White Department of Mineral Sciences Smithsonian |  | | Journal (article/letter/editorial) | | manganese-enriched sedimentary rocks (manganese deposits, commonly Mn ore deposits), which generally correspond to the...wavelengthdispersive spectroscopy, we find that unlike the Mn(IV)-dominated modern manganese deposits, three manganese...(CaMn(CO3)2), rhodochrosite (MnCO3), and braunite (Mn(III)6Mn(II)O8SiO4). Pairing these mineral and textural...forming secondarily, and later alteration forming Mn-silicates. Ó 2015 Elsevier Ltd. All rights reserved...and syenitic igneous rocks average at about 0.1% Mn(II) (Turekian and Wedepohl, 1961). Thus silicate |  | | Journal (article/letter/editorial) | | theorehasbeensequentially alteredto branniteII-brannite(new),bixbyite-hansmannite, andhausmanniterichore.Immediately...wasreprecipitated to formveryhigh grade(>-50vet% Mn)manganese oreimmediately adjacent tozones offerruginization...preserved erosional relictsofthemanganese-bearing Hotazel Beukes, 1987)interbedded withiron-formation of...high-grade a smallhill near Hotazel, at what is now the Black Rock mine orearepoorlyunderstood. In addition...manganesemum known thickness of about 45 m at the Mamatwan mine ore (Gutzmer, 1993; Gutzmer and Beukes,1993). andranges |  | | Journal (article/letter/editorial) | | manganese ores of the Postmasburg manganese field, South Africa J. GUTZMERAND N. J. BEUKES Department of Geology...University, P.O. Box 524, Auckland Park, 2006, South Africa Abstract The diagenetic to very low-grade metamorphic...minerals, including braunite, partridgeite and bixbyite, with rare braunite II and Ca-poor, silica-depleted...Iron-poor partridgeite is distinguished from Fe-rich bixbyite and the occurrence of Ca-poor, silica-depleted...greenschist facies metamorphic conditions. In contrast, bixbyite is apparently a product of metasomatic remobilisation |  | | Journal (article/letter/editorial) | | + 2.0kI/ mol. For braunite, the value for Ar-F1o(Mn,SiO,2,298.15 K), -4260 + 3.0 kJ/mol, was obtained...elements. A revised petrogeneticgrid for the system Mn-Si-O-C at 2000 bars is presentedand is consistent...crustal processesor the influence of organic C. Most Mn prove may to be a valuable indicator of mineral tinctive...Fioxidation termediate states.Of the Mn-rich minerals in which the Mn is genphase equilibria may imof braunite...rhodonite and its polymorph, pyroxmanprove metallurgy of Mn. Similar arguments extractive the gite (for which |  | Hazen, R. M., Papineau, D., Bleeker, W., Downs, R. T., Ferry, J. M., McCoy, T. J., Sverjensky, D. A., Yang, H. (2008) Mineral evolution. American Mineralogist, 93 (11) 1693-1720 doi:10.2138/am.2008.2955 | Journal (article/letter/editorial) | | DoMinic PaPineau,1 wouteR bleekeR,2 RobeRt t. Downs,3 JoHn M. FeRRy,4 tiMotHy J. Mccoy,5 DiMitRi a. sveRJensky...metal precipitates banded iron formations (Fe and Mn) b) carbonates ferroan carbonates, dolostones, limestones...(Ni,Fe)8(Si,P)3 †Oldhamite CaS †Niningerite (Mg,Fe,Mn)S †Daubreelite FeCr2S4 †Caswellsilverite NaCrS2 *...*Oldhamite CaS *Sphalerite ZnS *Niningerite (Mg,Fe,Mn)S *Daubreelite FeCr2S4 *Caswellsilverite NaCrS2 *Djerfisherite...phases such as oldhamite (CaS), niningerite [(Mg,Fe,Mn)S], osbornite (TiN), caswellsilverite (NaCrS2), perryite |  | | Book | | Germany; Pribram, Czechoslovakia; Broken Hill, New South Wales; Chanarcillo, Atacama, Chile; and in the states...crystals in Cornwall; at Wallaroo, South Australia and Broken Hill, New South Wales. Found in sandstone at...Keweenaw area of north Michigan; at the Copper Queen mine, Bisbee, Arizona and at Georgetown, New Mexico....Witwatersrand, South Africa, are the major economic gold producers. The Republic of South Africa is in fact...total annual production. Localities. Apart from South Africa, Above: Gold on quartz from California. Such |  | 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) | | with Illustrations by ERIC DOWTY SHAPE SOFTWARE JOHN WILEY & SONS, INC. NEW YORK - CHICHESTER - WEINHEIM...printed on acid-free paper. Copyright ©1997 by John Wiley & Sons, Inc. All rights reserved. Published...should be addressed to the Permissions Department, John Wiley & Sons, Inc., 605 Third Avenue, New York,...(1844) and all but one other have been published by John Wiley. The System was the first book Wiley (then...Asselborn, M.D.: Montrevel-en-Bresse, Ain, France. F. John Barlow: Appleton, Wisconsin. Peter Bayliss: Mineralogy |  | | Book (edition) | | book is respectfully dedicated to the memory of Dr. John Sinkankas for his kind initiative and support to...Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...hyphenated prefix -hould be avoided. as for instance ··Mn-siderite •• in tead of the correct ..manganoan siderite...Other examples are pump~U);te-(Fe:,. p umpellyite-(Mn 2+). or numerous zeolites. e.g. gmelinite- a. gmelinite-Ca...dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g. |  | | Book (edition) | | Morocco; (center, left) wulfen ite San Francisco mine, Sonora, Mexico; (center) amethyst, Veracruz, Mexico;...Mountains, Utah; (lower le ft) rhodochrosite, N'Chwaning mine, Sou th A frica; {lower left, center) wulfenite... Encyclopedia of Minerals HELEN KEMPNER FRCM JOHN & ElAINE WOODARD . . . N CYCL·OPEDIA OF INERALS...England Thomas Nelson Australia 102 Dodds Street South Melbourne, Victoria 3205, Australia Nelson Canada...Carey Kucera, Gary Caballero, Craig Chapman, and John Groen for data entry and preparation of the final |  | | Book (edition) | | Mineralogy, Museum of Geology South Dakota School of Mines & Technology Rapid City, South Dakota GEORGE ROBERT...Vesuvius, Italy (12, column 2) and SEMSEYITE, Julcani mine, Huancavelica, Peru (#3, column 2). Color, page..."Elementary Crystallography,'' by Martin Buerger, (John Wiley & Sons, 1956). "International Tables for X-Ray...of Minerals, by A. N. Winchell and H. Winchell (John Wiley & Sons, Inc., 1951 ). INTRODUCTION "Feldspars...volumes), by W. A. Deer, R. A. Howie, and J. Zussman (John Wiley , 1962). Structure Reports, published for |  | | Book | | Oural et au Katanga. En France, hormis la célèbre mine de Chessy (localité-type de la « chessylite », voir...à la disposition des collectionneurs (comme à la mine Clara en Forêt-Noire), moyennant un droit d’accès...(Alsace), Pontgibaud (Puy-de-Dôme) et en Haute-Loire (district de Brioude-Langeac). Étymologie Andalousite :...d’échantillons ont été conservés. Inversement, le musée de la mine de Kongsberg (près d’Oslo) présente une exceptionnelle...polluer les environs de la mine et contaminer l’environnement. Ainsi à la mine d’or de Salsigne (Aude) on |  | | Book | | io Robert Thompson 24 The Crystalline State John Bradley 42 Geology for the Collector Alan Woolley...In the shafts and tunnels of a sixteenth-century mine INTRODUCTION arabic^groffcvinditaris.f} norrafludd9...Ga Ge Au Hf He Ho H In 1 Ir Fe Kr La Pb Li Lu Mg Mn Hg Mo atomic number 13 51 18 33 56 4 83 5 35 48...Fe Sb 1 Te Sr K Mn Ti inert gases. From this has evolved the basic (OH) Rb Ti Ba Mn (C03) (B03) principle...or sharing electrons so that their electron clouds Mn Au (SOJ (P04) (Cr04) (AsOJ Zn (NT b,} can become |
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