 | | 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) | | Deposit—Kalahari Manganese Ore Field (Northern Cape, South Africa): Geochemistry of Isotopes (δ13C and...Abstract—Study of carbonate inclusions in the Mamatwantype oxide ores (braunite lutites) made it possible...1134/S0024490212030054 The Northern Cape manganese ore province (South Africa) is confined to the Kalahari...altered manganese (braunite) lutites taken from the Mamatwan deposit, the present paper attempts to describe...Manganese ores of the Kalahari Desert (Northern Cape province, South Africa) are confined to rocks of the Hotazel |  | | 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...Keywords: Arsenic Fluorapatite Kalahari Manganese Mamatwan Mukulu Hydrothermal Supergene Unconformity Wessels...thrust fault in the Kalahari Manganese Field, South Africa has undergone three significant alterations events...low-grade, diagenetic Mamatwan-type manganese ore from Mamatwan mine in the south of the Kalahari Manganese |  | | Journal (article/letter/editorial) | | Johannesburg, SouthAfrica Abstract Low-grade Mamatwan-type sedimentary manganese orehasbeenupgraded...smallhill near Hotazel, at what is now the Black Rock mine orearepoorlyunderstood. In addition, theeffectofferrugini-...manganesemum known thickness of about 45 m at the Mamatwan mine ore (Gutzmer, 1993; Gutzmer and Beukes,1993)...ore.Transitions fromWessels-type oreto low-grade Mamatwan-type oremaybe sharpor gradational. Mainoreandgangue...Thrust,I Mine[• Wessels Mine Black RockI• Nchwaning Mine • [• • Kalahari• Gloria Mine Deposit•___•k |  | | 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...omnipresent in the microcrystalline matrix of low-grade, Mamatwan-type ore, yields a tilt-corrected paleomagnetic...recrystallized hematite (20–250 µm), within both Mamatwan- and Wessels-type ore, generates a paleomagnetic |  | Gutzmmer, J., Beukes, N. J., Kleyenstuber, A. S. E., Burger, A. M. (1995) Magnetic hausmannite from hydrothermally altered manganese ore in the Palaeoproterozoic Kalahari manganese deposit, Transvaal Supergroup, South Africa. Mineralogical Magazine, 59 (397) 703-716 doi:10.1180/minmag.1995.059.397.12 | Journal (article/letter/editorial) | | Kalahari manganese deposit, Transvaal Supergroup, South Africa J. GUTZMER,N. J. BEUK~S Department of Geology...University, P.O.Box 524, Auckland Park 2006, South Africa A. S. E. KLEYENSTUBERANDA. M. BURGER MINTEK...MINTEK, Private Bag X3015, Randburg 2125, South Africa Abstract Hausmannite (Mn304), a manganese oxide with...ores of the giant Kalahari manganese deposit in South Africa. EDS-electron microprobe analyses indicate magnetic...KEYWOm3S:hausmannite, Kalahari manganese field, Wessels mine, ferrimagnetism, iron content. Introduction and |  | | 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) | | Johannesburg South Africa brucec@uj.ac.za Figure 1. Location of N’Chwaning mine in South Africa; map prepared...of view 1.7 cm, N’Chwaning II mine, Kalahari manganese field, South Africa. Bruce Cairncross specimen and... Nchwaningite N’Chwaning II Mine, Kalahari Manganese Field South Africa N chwaningite, Mn22+SiO3(OH)2·H2O...after its first occurrence at the N’Chwaning II mine (Nyfeler et al. 1995). Later specimens were also...also identified from the adjacent Wessels mine (von Bezing, pers. comm., cited in Nyfeler et al. [1995]) |  | | 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 (article/letter/editorial) | | 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)...became cov- group includespyrolusite,ramsdellite,manganite, ered with surface limestone and sand, and these...Morocco,for instance,hausmanniteand janekke,70 km south-southwest of Postmasburg. It was cobsiteoccurin |  | | Journal (issue) | | mines, Kalahari Manganese Field, Northern Cape Province, South Africa ..................................crystals on matrix, 17.2 cm, from the N’Chwaning I mine, collected in 1978. Private collection and photographer...(2015–2016) Scott A. Rudolph Paradise Woods (2008–2016) John Dabney (2015–2016) Daniel J. Record Irv Brown (2009–2015)...(2016–2017) Eric D. Long Barry M. & Beth Kitt (2011–2016) John Schneider (2016) Dylan Stolowitz Steve Maslansky...com APATITE Nagar, Hunza Valley, Gilgit District, Northern Areas, Pakistan, 11.5cm. Fine Minerals International |  | | Report (issue) | | pdf. Cover. Photograph of the Mamatwan open pit mine in South Africa. The black manganese layer is about...folded layering is shown by the shapes of the various mine benches. Lighter material in the background is waste...Prospects for Future Supply Edited by Klaus J. Schulz, John H. DeYoung, Jr., Robert R. Seal II, and Dwight C...............................................L18 Mine Waste Characteristics ........................................................................L22 Mine Closure........................................ |  | | Journal (article/letter/editorial) | | birnessite, with their diagenetic conversion products, manganite, braunite and bixbyite. The mineralogical characters...and birnessite to braunite and todorokite to manganite are preserved. The general observations suggest...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...subordinate (max. 5% by volume) but ubiquitous manganite and braunite. Bixbyite has only been identified |  | | Journal (article/letter/editorial) | | and ciatedwith sedimentary iron-formations in the Cape include the Hamersleybasinof Western Australia,...and Minas Gerais in Brazil, the Transvaalbasin of South Orissa,India. Thesedepositsrepresenta very imporAfrica...iron mayalsobe an importantsourceof manganese. South Africa, Brazil, and India. These include the Buttonet... & Mn DEPOSITS 1369 India South Orlssa Brazil Africa Minas Cape Province Transvaal Supergroup...hostingmanganese deposits associated withiron-formation in South Africa, Brazil, and India. todeformation andmetamorphism |  | 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...deposit on the Earth, located in the northern Cape Province, South Africa. Three Mn layers are interbedded |  | | Report (issue) | | Strategic Minerals Inventory Summary Report-Manganese By John H. DeYoung, Jr., David M. Sutphin, and William F...Federal Republic of Germany, the Republic of South Africa, and the United States of America 1984 CIRCULAR...Products Section, U. S. Geological Survey, 604 South Pickett Street, Alexandria, VA 22304 FOREWORD...phase of the inventory. The report was prepared by John H. DeYoung, Jr., and David M. Sutphin of the U.S...F. Cannon (chief compiler), USGS; Ian Goldberg, South African Department of Mineral and Energy Affairs |  | Gu, Xiangping, Yang, Hexiong, Xie, Xiande, van Nieuwenhuizen, Jaco J., Downs, Robert T., Evans, Stanley H. (2019) Lipuite, a new manganese phyllosilicate mineral from the N'Chwaning III mine, Kalahari Manganese Fields, South Africa. Mineralogical Magazine, 83 (5) 645-654 doi:10.1180/mgm.2019.12 | Journal (article/letter/editorial) | | mineral from the N’Chwaning III mine, Kalahari Manganese Fields, South Africa Xiangping Gu*1 , Hexiong Yang2...School of Geosciences and Info-Physics, Central South University, Changsha, Hunan 410083, China; 2Department...and 4Plot 968, Alheit, Kakamas 8870, Northern Cape, South Africa Abstract A new phyllosilicate mineral...N’Chwaning III mine, Kalahari Manganese Fields, Northern Cape Province, Republic of South Africa. It occurs...Kalahari Manganese Fields in the North Cape Province of South Africa hosts the largest manganese resource |  | | Journal (article/letter/editorial) | | concentrated in a few districts, suggesting a more local than global control on manganese metallogenesis...reserves at an average grade of 34 percent for Mamatwan-type ore. The worldwide average cutoff is about...separated when the dominant mineral is cryptomelane, manganite, nsutite, psilomelane, or todorokite. More complex...MAYNARD Rhodochrosite Braunite Cryptomelane Manganite Pyrolusite Hausmannite Psilomelane Amorphous oxides...analyses from Mn deposits of various ages, such as Mamatwan (Paleoproterozoic), Nsuta (Paleoproterozoic), |  | | Journal (article/letter/editorial) | | or lumped together with the output of a larger local mine. The locality registered in the literature is...of an orebody (or orebodies). At the old Crimora Mine in Virginia (Eilertsen and Feiss, 1946), "about...actual average Mn grade of well under 5%. lain, South Dakota: 1% M n ) are involved. In global speculations...credited with 1045 Mn mines. This amounts to one mine per 362 km 2. Canada, on the other hand, has only...occurrences contain more than 100 t Mn (i.e., one Mn mine per 551,000 km2). Some small mineralized belts, |  | | Journal (article/letter/editorial) | | THF,Postmasburg manganese field,situated in the Northern replacement of the countryrockbymanganeseCapeProvince...In contrast Schneiderh6hn (1931)suggested in the south(Fig. 1). Miningof the manganese orescom- Borchert...'ostmasburg v ,6p Fe-deposit v V ¾ v v • v ¾ v Cape Town'•v v v •. v v v v F•c. 1. Regional...withlow-angle uneonformity byLate Beeshock in the northern and southern extremities of the domewheretheyconstitute...conglomerate finesupwardinto a sucFormationalongthe north-south-striking, westerlydipping The Doornfontein BlackRidgethrust |  | | Journal (article/letter/editorial) | | Hotazel formation of the Transvaal Supergroup in South Africa is the most spectacular example of a manganiferous...Wabush Iron-Formation (KLEIN, 1966), and the Champion Mine, Marquette County, Michigan (BABCOCK, 1968). Theories...d-spacings are diagnostic of bimessite (“7 A manganite”), a hydrated manganese oxide (BURNS and BURNS...BABCOCK L. L. ( 1968) Manganese minerals from Champion mine, Marquette County, Michigan. Compass 45, 162- 170...( 1973) Precambrian iron formations ofSouthern Africa. Econ. Geol. C&,960-1004. BOROWSKAZ. and MAUZERALLD |  | | Journal (article/letter/editorial) | | environment 39 1. INTRODUCTION 40 The Urucum mining district occupies an area of approximately 800 km2 and...Urban et al. (1992) estimated that the Urucum district 47 contains more than 600 Mt of rock with high...environment, for the carbonate BIFs of the Santa Cruz Mine region 63 located on the southeastern part of...plateau. 64 This study presents evidence for local submarine hydrothermal exhalation and biogenic ...hematite (Fig 3B). Locally, at the Figueirinha 110 Mine, this conglomerate contains a carbonate boulder |  | | Report (volume) | | Mineral Foundation 63 Conyngham Street Glenside South Australia 5065 Australia (Orders: Tel. (08) 379-0444...Penganga Group of the Pranhita-Godavari valley, South India NICHOLSON, K., NAYAK, V. K. & NANDA, J. K...ores of the GhoriajhorMonmunda area, Sundergarh District, Orissa, India: geochemical evidence for a mixed...nodules with particular reference to the tropical South Pacific VON STACKELBERG, W. Growth history of manganese...Mn-oxide mineralization of Kato Nevrokopi, Macedonia, northern Greece: controls on formation of the Mn 4+ oxides |  | | Book | | talc vug in 1997, is 1.7 cm long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals...and pegmatitic environments. In the mid- l 970s, local historian-collector William J. Brunet set out to...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...which they called the Bentley Lake Road occurrence, south of Bancroft. Sharp, flattened rhombohedral ilmenite...Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's |  | | Book | | On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...AJO Famous mineral localities: the New Cornelia mine, Ajo, Arizona (by W. J. Thomas & R. B. Gibbs) 14:283-298...ALLEN, GEORGE B. --and W. Hunt: The Tonopah-Belmont mine, Maricopa County, Arizona 19:139-144 ALLGOOD, GENNE...Allgood, C. Williams: Ramsdellite from the Mistake mine [Arizona] 14:333-335 ALLGOOD, ROBERT W. -with G...the Mistake mine [Arizona] 14:333-335 ALMA Famous mineral localities: the Home Sweet Home mine, [near Alma |
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Mamatwan Mine, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa