 | | 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 |  | | Report (issue) | | months” in the Big Bear orebody in the Fletcher mine, Viburnum Trend, Reynolds County, Missouri; these...twin, 6 cm, from the Big Bear orebody, Fletcher mine, Viburnum Trend, Reynolds County, Missouri. Weinrich...Galena, 4 cm, from the Big Bear orebody, Fletcher mine, Viburnum Trend, Reynolds County, Missouri. Weinrich...specimens has been given as the Ortega mine in the Mundo-Tamboras district, Sanchez Carrion Province, La Libertad...occurrence was actually in a previously unnamed mine that the Ortega brothers, who developed it for the |  | | Journal (article/letter/editorial) | | Department of Geology, University of Johannesburg, South Africa e-mail: nickvafeas@gmail.com; ljolly@uj.ac.za;...Meffre@utas.edu.au © 2018 June Geological Society of South Africa. Abstract The manganese ore of the Hotazel...least two other well-recognised ore types, namely Wessels-type (affected by hydrothermal alteration only)...kutnohorite matrix (Kleyenstüber, 1984; 1985). The Wessels-type ore is a high-grade, braunite II- and bixbyite-rich...1048 ± 5.9 Ma (Gnos et al., 2003) hydrothermal, Wessels alteration event (Gutzmer, 1993; Gutzmer and Beukes |  | | Journal (article/letter/editorial) | | hydrothermalsolutionsinto the high-grade,high-temperature Wessels-type oresconsistingof brauniteII, bixbyite,hausmannite...brauniteis muchlessabundant in the high-grade Wessels-type ore thanin theIgw-grade Mamatwan-type ore...ProterozoicTransvaalSupergroup in the northern Cape Province, South Africa (Fig. 1A),mostprobablyrepresents.../ • I/ ' Momotwon-Wessels ;-_• •Hotozel Depos• / _-__-_• ,, Anne,• Wessels-type ore Momatwon-type...altered Diegenetic to low Grade metamorphic Wessels- type ore Mamatwon- type ore lava BI•'• Iron |  | | Report (issue) | | Morocco; H2 O by the Penfield method, includes pyrolusite estimated at 5.4%; corresponds to Ca4.00 Mn2...(CO3 )0.95 [O2.78 (OH)0.22 ]Σ=3.00 . (2) Wessels mine, South Africa; by electron microprobe, corresponding...Marokite, braunite, hausmannite, crednerite, pyrolusite, calcite, quartz, brucite (Tachgagalt, Morocco);...hematite (Kuruman district, South Africa). Distribution: From Tachgagalt, 17 km south-southwest of Ouarzazate...Morocco. At the Wessels and N’Chwaning mines, near Kuruman, Cape Province, South Africa. Name: Honors Abbé |  | | 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) | | todorokite from the Kalahari manganese field, South Africa J. Gutzmer and Nicolas J. Beukes Department...University, P.O. Box 524, Auckland Park 2006, South Africa e-mail: jg@na.rau.ac.za; njb@na.rau.ac.xa ABSTRACT...braunite-kutnahorite lutite at the Smartt Mine in the Kalahari manganese field, South Africa. Geological evidence and...place during Tertiary uplift and tilting of the South African Subcontinent. Careful chemical studies of... with fibre lengths up to 10cm, occur at Smartt mine in the Kalahari manganese field. The occurrence |  | | Journal (article/letter/editorial) | | relativelyshallow)shows that the manganese peroxideminerals(pyrolusite, cryptomelane,etc.) are found only to a depth...minerals(Hew- portant contributionshave been made by John de ett and Fleischer,1960), and the GriqualandWest...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)...Morocco,for instance,hausmanniteand janekke,70 km south-southwest of Postmasburg. It was cobsiteoccurin |  | | Journal (article/letter/editorial) | | Sweden (Sverige) Gladhammar mine, nickel-rich carrollite, 737 Harstig mine, Pajsberg, sarkinite, 681 Norr6...Norr6, arrojadite (hiihnerkobelite), 23o Sjo mine, Grythytte Parish, Orebro, xantharsenite, polyarsenite...analcime, 76I Castleton, Derbyshire, fluorite (Blue John), 243 Crook Hill brickyard, Cbickerell, near Weymouth...Cornwall, luxullianite, 441; 442 Scar Crag, Lake District, arsenopyrite, alloclase, glaucodot, cobaltian...Court farm, Ramsgate, Kent, chalk, i6o Tynebottom mine, Garrigill, Cumbria, arsenical marcasite, gersdorffite |  | | Journal (article/letter/editorial) | | University RO. Box 524 AucWand Park, 2006 Gauteng, South Africa . . .*.’. Corresponding author: bc @na.rau...just south of the great Kalahari Desert on the vast plains of the Northern Cape Province of South Africa...of the Transvaal Supergroup rocks (black) in South Africa. B: Enlarged portion of Griqualand West showing...and one of the few economic centers of the Northern Cape Province. Kuruman is also the preferred home...live in the mine villages of Hotazel and Black Rock. These were established by SAMANCOR (South African Manganese |  | | Journal (issue) | | deposits of Elsmore, New England district of New South Wales. Rankin, John, Sharpe, James L. and Williams...associated minerals from the Barrington Tops area, New South Wales. Graham, Ian T., Pogson, Ross E. and Colchester...8(1):3-8 Secondary copper minerals of the Crusader mine, north-west Queensland. Sharpe, James L. and Williams...suite of secondary minerals from the Nifty copper mine, Western Australia. Downes, P.J., Shields, P. and...ribbons associated with thomsonite from Borambil, New South Wales. Graham, Ian T. and Pogson, Ross E. 7(2):S7-61 |  | | Journal (article/letter/editorial) | | to ensure that labeling is consistent with the local judging rules. For the systematic collector, and...Muscovite crystals forming a 10-cm rosette, Jose Pinto mine, Minas Gerais, Brazil. Table 3. Interlayer-deficient...spectacular recent find of muscovite was at the Jose Pinto mine, where more than a ton of beautifully crystallized...pink (manganoan) varieties are found at the Harding mine, Taos County, New Mexico (Jahns and Ewing 1977)...forms huge crystals. At Slyudyanka, Lake Baikal district, Russia, it forms large, dark red-brown (but surprisingly |  | | Journal (article/letter/editorial) | | Deposit—Kalahari Manganese Ore Field (Northern Cape, South Africa): Geochemistry of Isotopes (δ13C and...1134/S0024490212030054 The Northern Cape manganese ore province (South Africa) is confined to the Kalahari...field under operation (Mamat wan, Black Rock, Wessels, Gloria, and others) have been scrutinized, the...Manganese ores of the Kalahari Desert (Northern Cape province, South Africa) are confined to rocks of the Hotazel...Supergroup (Fig. 2). At ore deposits in the Northern Cape province, the Early Proterozoic section of the |  | | Journal (issue) | | ARTICLES: Chalcophanite from the Mou'nt Stewart Mine Leadville, NSW. England, B.M. 1�):9-11 Definition... A. 2(1):21-24 Heulandite from the Illawarra District, NSW. Carr, P., Perkins, M., Chenhall, B., Pemberton...1(2):27 Minerals from. t� Spring Creek Mine, near Wilmington, South Australia. Beyer, B. and Elliott, P...P. 2(2):57-70 The minerals of the Magnet Mine, Tasmania. Haupt, J., Bottrill, R. and Sorrell, S. 1(1):3-19...Pyramid Hill, Victoria. Birch, W.D. 2(2):47-50 Post-mine sulphates from Teutonic Bore base metal deposit |  | | Journal (article/letter/editorial) | | Hashupa and at Alchuri, in the Shigar Valley, Northern Areas, Pakistan (Blauwet 2006). • Good crystals...niigataite for the type locality, in the Itoigawa-Ohmi district, Niigata Prefecture, in central Japan (Miyajima...in a sample of pumpellyite rock from the Wakasa district, Tottori Prefecture, Japan. The host rock consisted...striated epidotes in matrix, from the Calumet iron mine, Colorado. Epidote was described in 1801 by Haüy...collectors. Within the United States, the Green Monster mine, Prince of Wales Island, Alaska, has yielded superb |  | | Journal (article/letter/editorial) | | produced by conversion of todorokite-birnessite. Pyrolusite and cryptomelane, conventionallyconsidered as...environments by hydrothermal/volcanogenic processes (e.g. Northern Apennine Ophiolitic Complex, Italy, Bonatti et...the lower Proterozoic Transvaal Supergroup, South Africa (Beukes, 1983, 1984; Miyano and Beukes, Dr...association with Mn4+-bearing oxides such as pyrolusite and/or cryptomelane stabilized by late diagenesis...of these primary oxides but are dominated by pyrolusite, cryptomelane and/ or psilomelane (roman~chite) |  | | Journal (issue) | | The Occurrence and Gemological Properties of Wessels Mine Sugilite James E. Shigley, J o h n 1. Koivulti...The Rutilated Topaz Misnomer Robert E. Kane 100 John I. Koivula REGULAR FEATURES 104 Ill 113 115 Gem...Associate Editors Peter C. Keller D. Vincent Manson John Sinkankas Technical Editor Carol M. Stockton Editor...Misiorowski Contributing Editor and Editor, Gem News John I. Koivula PRODUCTION STAFF Jennifer Erosions...Kampf Los Angeles, CA Robert E. Kane Los Angeles, CA John 1. Koivula Santa Monica. CA Hcnry 0. A. Mcyer West |  | Costin, Gelu, Fairey, Brenton, Tsikos, Harilaos, Gucsik, Arnold (2015) Tokyoite, As-Rich Tokyoite, and Noélbensonite: New Occurrences From the Postmasburg Manganese Field, Northern Cape Province, South Africa. The Canadian Mineralogist, 53 (6) 981-990 doi:10.3749/canmin.1500063 | Journal (article/letter/editorial) | | THE POSTMASBURG MANGANESE FIELD, NORTHERN CAPE PROVINCE, SOUTH AFRICA GELU COSTIN Department of Geology...Rhodes University, P.O. Box 94, Grahamstown 6140, South Africa Department of Earth Science, MS-126 Rice University...Rhodes University, P.O. Box 94, Grahamstown 6140, South Africa ARNOLD GUCSIK Department of Geology, University...University of Johannesburg, Johannesburg, South Africa ABSTRACT Samples of manganese-rich rock containing...from the Postmasburg area in the Northern Cape Province of South Africa. The samples consist of fine-grained |  | | 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...peak metamorphic conditions. It is suggested that local variations of the metamorphic mineral association...Transvaal Supergroup, manganese ore, Postmasburg, South Africa. Introduction TIlE manganese ores of the Postmasburg...roman6chite cryptomelane manganomelane** lithiophorite pyrolusite ramsdellite diaspore gamagarite ephesite amesite |  | | Report (issue) | | Michigan, USA). Association: Todorokite, manganite, pyrolusite, neotocite, barite, quartz, calcite (Oriente...Distribution: In Cuba, in Oriente Province, about 10 km south of Bueycito; and near Banes, north of Antilla. In...Michigan. In the Wessels mine, near Kuruman, Cape Province, South Africa. In the Cerchiara mine, near Faggiona |  | Fairey, Brenton J., Timmerman, Martin J., Sudo, Masafumi, Tsikos, Harilaos (2019) The Role of Hydrothermal Activity in the Formation of Karst-Hosted Manganese Deposits of the Postmasburg Mn Field, Northern Cape Province, South Africa. Minerals, 9 (7) 408 doi:10.3390/min9070408 | Journal (article/letter/editorial) | | Deposits of the Postmasburg Mn Field, Northern Cape Province, South Africa Brenton J. Fairey 1,† , Martin J...Geology, Rhodes University, Grahamstown 6139, South Africa Correspondence: h.tsikos@ru.ac.za Current address:...Postmasburg Manganese Field (PMF), Northern Cape Province, South Africa, once represented one of the largest...Postmasburg manganese field; hydrothermal; karst; South Africa Minerals 2019, 9, 408; doi:10.3390/min9070408...(KMF), the Postmasburg Manganese Field (PMF) was South Africa’s largest producer of this important component |  | | Journal (article/letter/editorial) | | Laval] at 20:02 10 July 2014 Broken Hill, New South Wales, Australia F or mineral collectors introduced...Sterling Hill, New Jersey, and Broken Hill, New South Wales, Australia. The recent discovery of fine gem-quality...rhodonite on galena specimen from the North mine, Broken Hill, New South Wales, Australia; field of view 8 cm...Rhodonite also has been reported from the Stinson mine on Jenny Jump Mountain, Warren County, New Jersey...lapidary-grade massive rhodonite occurs in an old manganese mine north of Kid’s Store, Nelson County, Virginia, and |  | Grobbelaar, W. S., Burger, M. A., Pretorius, A. I., Marais, W., van Niekerk, I. J. M. (1995) Stratigraphic and structural setting of the Griqualand West and the Olifantshoek Sequences at Black Rock, Beeshoek and Rooinekke Mines, Griqualand West, South Africa. Mineralium Deposita, 30 (2) 152-161 doi:10.1007/bf00189344 | Journal (article/letter/editorial) | | Beeshoek and Rooinekke Mines, Griqualand West, South Africa W.S. Grobbelaar, M.A. Burger, A.I. Pretorius...Manganese Mines of South Africa Limited, PO, Mancorp Mine, 8423, Beeshoek, South Africa Received: 13 May...200 km between R o o i n e k k e Mine in the south and Black Rock Mine in the north, in G r i q u a l a...distribution of geological features to the n o r t h and south of the M a r e m a n e D o m e structure, located...unconformity separates the Campbellrand Subgroup from the local variety of the Asbestos Hills Subgroup. Prior to |  | Nyfeler, Daniel, Armbruster, Thomas, Dixon, Roger, Bermanec, Vladimir (1995) Nchwaningite, Mn (super 2+)2SiO3(PJ)2.H2O, a new pyroxene-related chain silicate from the N'chwaning Mine, Kalahari manganese field, South Africa. American Mineralogist, 80 (3) 377-386 doi:10.2138/am-1995-3-419 | Journal (article/letter/editorial) | | silicate from the N'chwaning mine, Kalahari manganesefield, South Africa D.lNrtr, Nwnr.nnoTHonmsAnrvrnnusrrn...Geological Survey, PB Xl 12, 0001 Pretoria, South Africa Vr,lnrurn BnnueNnc Department of Mineralogy...N'chwaning mine, located in the Kalahari manganesefield, northern Cape Province, South Africa. The aggregatesconsist...0.05 mm in size. Nchwaningite is named after the mine N'chwaning II, where it was found first. Nchwaningiteis...ore is developed as coarse crystalline massive Wessels-type ore of relatively high gradewith Mn contentsbetween42 |  | | Catalog/List | | 1077 ■ ALLOPHANE Hawkswood Mine, Cornwall 220 ■ CLINOSAFFLORITE Capitol Mine. Gowganda, Ontario.Canada...Ni)As 1129 ■ 1000 ■ CORDIERITE Bjordammen, Bamble, South Norway Brown rounded crystal sections and cleavages...£3 lx2£6 CurichAdamile 766 ■ DIOPTASE Christmas Mine, Gila County, Arizona ,USA Green elongated micro...lxl£6 CuSi0 .. - - -- -·- 131 ■ DOLOMITE Carrock Mine, Caldbeck Fells, Cumbria FERROAN DOLOMITE, rich...massive lxl £1 lx2 £2 2x2 £5 104 ■ EMMONSITE Bambolla Mine, Moctezuma, Mexico Green crusts on matrix. quite |
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