 | | 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 |  | | 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) | | Ettringite N’Chwaning II Mine, Northern Cape Province Republic of South Africa C oncrete, that manmade...N’Chwaning II mine, Kalahari manganese field, Northern Cape Province, Republic of South Africa. This specimen...to 2 mm, some associated with calcite. The Clara mine, Ober Wolfach, Schwarzwald (Black Forest), Baden-Württemberg...(1984) notes that ettringite crystals from the Clara mine may be mistaken for aragonite, and vice versa. Italy...N’Chwaning II mine, Kalahari manganese field, Northern Cape Province, Republic of South Africa. Scott Rudolph |  | | Journal (article/letter/editorial) | | Olmiite N’Chwaning II Mine, Kalahari Manganese Field Republic of South Africa T here was a time when...Olmiite from its type locality, the N’Chwaning II mine, was initially identified as spectacular poldervaartite...MINERALS its own nearby type locality, the Wessels mine (Cairncross, Gutzmer, and Pretorius 2002). The...valuable poldervaartite specimens from the original Wessels mine discovery during the period of its supposed...continue to be recovered from the N’Chwaning II mine, Guest columnist Dr. Robert B. Cook, an executive |  | | Report (issue) | | Ca4 Mn3+ 3−x (BO3 )3 (CO3 )(O, OH)3 Gaudefroyite c 2001-2005 Mineral Data Publishing, version 1 Crystal...(CO3 )0.95 [O2.78 (OH)0.22 ]Σ=3.00 . (2) Wessels mine, South Africa; by electron microprobe, corresponding...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...(1) Jouravsky, G. and F. Permingeat (1964) La gaudefroyite, une nouvelle espèce minérale. Bull. Minéral |  | | Journal (article/letter/editorial) | | Marshallsussmanite Wessels mine, Kalahari Manganese Field Northern Cape Province, South Africa M ineral collecting...wonderful specimen of bustamite from the Wessels mine in South Africa. I brought over the Smithsonian Institution...marshallsussmanite. Those collectors who acquired a Wessel’s mine bustamite back in 2011 are now the lucky owners...9.1 cm high, Wessels mine, Kalahari Manganese Field, Northern Cape Province, South Africa. This specimen...Jeff Scovil photo. Volume 89, May/June 2014 259 JOHN E. GARSOW For Gems & Minerals May 10-11 Lancaster |  | 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 |  | | 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) | | 72:168-172. mixed the two localities. The Boldut mine is well known for dozens of carainels (a typical...Germany) offered rhodochrosite from the Sweet Home mine, Alma, Colorado. Most of the samples came from the...limelight. Jordi Fnbre (C/Arc de Sant Marti 79 Local, 08032 Barcelona, Spain), Figure 7. Gypsum, 13 by...Romania, including superb calcites from the Boldut mine, in Azerbaidjan, and he explained to me how difficult...1995 and January 1996 at the 350 level of the mine local miners yourself, so you have to buy specimens |  | | Journal (article/letter/editorial) | | manganese ore in the Kalahari manganese ®eld, South Africa Received: 28 May 1996 / Accepted: 22 January...Mamatwantype ore is altered to high-grade oxide-rich Wessels-type ore in association with normal faults. Mass...manganese ®eld (Fig. 1) highgrade hausmannite-rich Wessels-type ore (KleyenstuÈber 1984) formed as a product...Mamatwan-type ore along a series of normal faults in the Wessels-Nchwaning and Hotazel areas (Fig. 2A). The petrography...University, PO Box 524, Auckland Park 2006, South Africa e-mail: JG@RAU3. RAU.AC.ZA Fax: 0027-11-489-2309 |  | | Journal (article/letter/editorial) | | 2000 Transmission electron microscopy study of gaudefroyite, Ca8Mn3+ 6 [(BO3)6(CO3)2O6] ISHMAEL HASSAN*...microscopy (TEM) study of gaudefroyite, Ca8Mn3+ 6 [(BO3)6(CO3)2O6], from the Wessels mine, Kalahari manganese...manganese field, South Africa, shows strong, continuous streaking in selected-area electron diffraction (SAED)...parameters for gaudefroyite are a = 10.606(1) and c = 5.896(1) Å. The symmetry of gaudefroyite is lower than...continuous streak reflections in gaudefroyite. INTRODUCTION Gaudefroyite, Ca8Mn3+ 6 [(BO3)6(CO3)2O6], Z |  | | Journal (article/letter/editorial) | | 2006 Johannesburg, South Africa brucec@uj.ac.za Hausmannite N’Chwaning II Mine, Kalahari Manganese...Manganese Field Northern Cape Province, South Africa B lack minerals are generally not considered highly desirable...hausmannite is Öhrenstock, Langewiesen, Ilmenau district, Thuringian Forest, Thuringia, Germany. Originally...180 years to the Kalahari manganese field in South Africa (Wilson and Dunn 1978; von Bezing et al. 1991)...on andradite, N’Chwaning II mine, Kalahari manganese field, South Africa. Steve Smale specimen, Jeff |  | | Report (issue) | | 11.91(1) Z=8 X-ray Powder Pattern: Tachgagalt mine, Morocco. 2.75 (vvs), 2.516 (vs), 4.37 (s), 3.09...45 2.56 7.85 0.08 Total 99.87 (1) Tachgagalt mine, Morocco; corresponds to Ca2:97 (Mn3+ 1:48 Al0:54...(Tachgagalt mine, Morocco). Association: Marokite, hausmannite, gaudefroyite, calcite (Tachgagalt mine, Morocco);...andradite (N'Chwaning mine, South Africa). Distribution: In the Tachgagalt manganese mine, Anti-Atlas Mountains...From the N'Chwaning and Wessels mines, near Kuruman, Cape Province, South Africa. Name: For Henri F.E |  | | Journal (article/letter/editorial) | | African Localities T o complement the Minerals of Africa theme of the 2002 Tucson Gem and Mineral Show,...88; Namibia is next with 73; the Republic of South Africa is third with 65; together they represent about...immediately leap to mind at the very mention of Africa, David Livingstone (18 13-73) and Henry Morton...for them, but neither species was first found in Africa; Mexico and Peru are the type localities for livingstoneite...next-most-famous person on the African stage, Cecil John Rhodes (1835-1902), is honored with rhodesite (q |  | | Journal (article/letter/editorial) | | sedimentary manganese orehasbeenupgraded to high-grade Wessels-type orein theKalahari manganese field.Thealteration...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). andranges...sedimentary structures ranges fromgoodtoabsent in Wessels-type ore.Transitions fromWessels-type oreto low-grade...Leinster-Deposi! fields are listed in Table 2. ISevern Wessels-type oreappears toberestricted tothenorthwesternpartoftheKalahari |  | | Journal (article/letter/editorial) | | Afrikaans Universi& RO.Box 524, Auckland Park, 2006, South Africa. Klein Spitzkoppe topaz was first described...collector market and gem trade have been excavated by local Damara diggers. A granite quarry used to encounter...2006, South Africa. The Kalahari manganese field is located in Northern Cape Province, South Africa. It...sedimentary ore, the Mamatwan-type, named after the mine where it is exploited. This contains 20-38 weight...percent manganese metal. The other is a high-grade, Wessels-type ore with 45-60 weight percent manganese. The |  | | 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...hematite (20–250 µm), within both Mamatwan- and Wessels-type ore, generates a paleomagnetic pole (present...sample suite (WESS) is restricted to high-grade Wessels-type ore, rich in high Fe hausmannite and coarser |  | | 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) | | 183-193 (2008) DOI : 10.3749/canmin.46.1.183 GAUDEFROYITE, Ca8Mn3+6[(BO3)6(CO3)2O6]: HIGH-TEMPERATURE...Jamaica Abstract The structural behavior of gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6], was determined by...Å3 at room temperature. The expansion of the gaudefroyite structure is nearly isotropic and is caused...phase that exsolved from the host gaudefroyite. Keywords: gaudefroyite, high-temperature structure, exsolution...avons déterminé le comportement structural de la gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6], au moyen d’affinements |  | | Journal (issue) | | the Unificada mine, Potosi, Bolivia. Top right: Benitoite, 2 cm, from the Benitoite Gem mine, California...N‘Chwaning I mine, Kuruman, South Africa. Bottom right: Mimetite, 2.7 cm, from the Tsumeb mine, Namibia....Record: (1) Stephanite, Husky mine, Canada. (2) Wulfenite, Rowley mine, Arizona. (3) Diaspore twin, Pinarcik...Adelaide mine, Tasmania. (5) Andradite, Antetezambato, Madagascar. (6) Calcite, Mashamba West mine, Congo...(8) Scorodite, Tsumeb mine, Namibia. (9) Shigaite, N’Chwaning II mine, South Africa. v This special supplement |  | | Journal (article/letter/editorial) | | the Paleoproterozoic Transvaal Supergroup of South Africa V. Papadopoulosa, H. Tsikosb, A. Boycea and...Department, Rhodes University, Grahamstown, South Africa; cDepartment of Earth & Environmental Science...deposits of the Kalahari manganese field (KMF) in South Africa have been locally upgraded by hydrothermal alteration...borates and sulphates such as aegirine, andradite, gaudefroyite and barite (Beukes et al. 1995). Barite and...Field (PMF) stretching as far as ∼150 km to the south of the KMF. However, these ores are thought to have |  | 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 |  | Putzolu, F., Mondillo, M., Maczurad, M., Najorka, J., Boni, M., Graziano, S. F., Cappelletti, P., Santoro, L. (2019) Mineralogy and chemistry of Ni-bearing phyllosilicates from the saprolite zone of the Wingellina Ni-Co laterite deposit (Western Australia) Applied Earth Science, 128 (2) 57-58 doi:10.1080/25726838.2019.1607163 | Journal (article/letter/editorial) | | the Paleoproterozoic Transvaal Supergroup of South Africa V. Papadopoulosa, H. Tsikosb, A. Boycea and...Department, Rhodes University, Grahamstown, South Africa; cDepartment of Earth & Environmental Science...deposits of the Kalahari manganese field (KMF) in South Africa have been locally upgraded by hydrothermal alteration...borates and sulphates such as aegirine, andradite, gaudefroyite and barite (Beukes et al. 1995). Barite and...Field (PMF) stretching as far as ∼150 km to the south of the KMF. However, these ores are thought to have |  | Poirier, G., Ercit, T. S., Tait, K. T., Piilonen, P. C., Rowe, R. (2009) New Mineral Names. American Mineralogist, 94 (2) 399-408 doi:10.2138/am.2009.538 | Journal (article/letter/editorial) | | cationic groups. Magnesiopascoite is from the Blue Cap mine, near La Sal, San Juan County, Utah, U.S.A. The...687–692. Martyite was discovered in the Blue Cap mine, La Sal, San Juan County, Utah. Associated minerals...of its Cu-O octahedra. The mineral is named for Joe Marty for his contributions to mineralogy. Two cotype...mineral with disordered structure from the Santa Rosa mine, Atacama desert, Chile. Neus Jb. Mineral. Abh.,... copper, lead) Santa Rosa mine, located in the Atacama desert of Northern Chile, 15 km SE of the port |  | | Report (issue) | | hematite is from the Wessels Mine near Hotazel in northern Cape Province, South Africa. Dan Carlson specimen;...Cover: Grossular on diopside; 7.1 cm tall Jeffrey Mine, Asbestos, Richmond County, Quebec, Canada Paul... H. Albert Gilg Mickey Gunter, Jaroslav Hyrs 1, John I. Koivula, Jiri Kourimsky, Bertold Ottens Pete...Bainbridge, Modris Baum, Dan Behnke Dudley Blauwet, Joe Budd, Thomas Calligaro, Matteo Chinellato, Rick Cowley...Hochleitner Richard Jackson, John I. Koivula, George F. Kunz, Arthur Lakes, John Lucking Hans Jorg Mullenmeister |
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Wessels Mine, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa