 | Moore, John M., Kuhn, Barbara K., Mark, Darren F., Tsikos, Harilaos (2011) A sugilite-bearing assemblage from the Wolhaarkop breccia, Bruce iron-ore mine, South Africa: Evidence for alkali metasomatism and 40Ar-39Ar dating. European Journal of Mineralogy, 23 (4) 661-673 doi:10.1127/0935-1221/2011/0023-2117 | Journal (article/letter/editorial) | | breccia, Bruce iron-ore mine, South Africa: Evidence for alkali metasomatism and 40Ar-39Ar dating JOHN M. MOORE1...Geology, Rhodes University, Grahamstown 6140, South Africa *Corresponding author, e-mail: h.tsikos@ru.ac...chert breccia at the Bruce iron-ore mine, Northern Cape Province, South Africa. The upper portion of...dominated by braunite, albite, K-feldspar and aegirine, and locally hosts irregular-shaped void-fills...Similarities to sugilite-bearing assemblages at the Wessels mine in the Kalahari Manganese Field suggest that a single |  | | Journal (issue) | | v/Dec2023 1. 98, No.6 - - - - - - - - ROCKS & MINE $12.95US $12.95CAN IIUJ ., . vww.tandfonlirie...tandfonlirie .com/vram MIM MUSEUM Vesuvianite Jeffrey Mine. Val-des-Sources. Les Sources RCM, Es t rie, Quebec...Carl A. Francis Maine Mineral & Gem Museum, ME John Rakovan New Mexico Institute of Mining & Technology...Natural Science, TX Bruce Cairncross, University of Johannesburg, South Africa Steven C. Chamberlain...edition for any number of concurrent users across a local area network. Subscription offices: USA/North America: |  | 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,â , 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...Na-, K- and Ba-bearing minerals, particularly aegirine, albite, microcline, banalsite, sĂ©randite-pectolite...Postmasburg manganese field; hydrothermal; karst; South Africa Minerals 2019, 9, 408; doi:10.3390/min9070408 |  | | Show/Event (guide) | | private appointments Topaz, Cleavelandite Mokrush Mine, Russia Thomas Spann Photo 2 3 CONTENTS 06...Tucson, AZ 85705 in the center of the Mineral District. The mineralogy section of the mim today hosts...Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania. 14.5 x 5.5 x 3.5 cm...Swoboda. 12 VĂ€yrynenite. Lolu Dahku mine, Roundu Valley, Skardu District, Gilgit-Baltistan, Pakistan. 14...Stibiotantalite. Urandu mine, Shigar Valley, Shigar District, Gilgit-Baltistan (Northern Areas), Pakistan, |  | | Journal (article/letter/editorial) | | CONNOISSEUR'S CHOICE BRUCE CAIRNCROSS Downloaded by [UNIVERSITY OF ADELAIDE LIBRARIES] at 04:38 13 October...Johannesburg, South Africa brucec@uj.ac.za SUGILITE Wessels Mine, Kalahari Manganese Field Northern Cape Province...Province, South Africa P urple is a relatively uncommon color in the mineral world, and one of the most...Kalahari manganese field in South Africa and in one mine in particular, the Wessels mine (Dixon 1985). If it...it were not for the South African deposits, sugilite would be considered a rare mineral. Sugilite, KNa(Fe2+ |  | | Journal (article/letter/editorial) | | VallĂ©e-du-Richelieu Regional County Municipality MontĂ©rĂ©gie QuĂ©bec, Canada A s Bruce Cairncross (2018, p. 271)...Saint-Hilaire (La VallĂ©e-du-Richelieu Regional County Municipality [RCM], QuĂ©bec, Canada), one of the Quintin Wight...cores of pectolite and apophyllite with minor aegirine versity first applied the name âMonteregian Hillsâ...fashion, taking the on the additional presence of aegirine, augite, albite, arfvedentire floor of the quarry...rush. Among the early arrivals was a very capable local collector, Jacques Bradley, who assembled a large |  | Costin, Gelu, Fairey, Brenton, Tsikos, Harilaos, Gucsik, Arnold (2015) Tokyoite, As-Rich Tokyoite, and NoĂ©lbensonite: 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 ïŹne-grained |  | | Journal (article/letter/editorial) | | map showing the Wessels mine in South Africa, prepared by William Besse. BRUCE CAIRNCROSS Department...Johannesburg, South Africa brucec@uj.ac.za Wesselsite Wessels Mine Kalahari Manganese Field South Africa Figure...Figure 2. The Wessels mine in the middle distance, as seen looking east from Black Rock hill. Part of Black...Black Rock mine village is in the foreground. Bruce Cairncross photo, November 2011. 282ââ ROCKS & MINERALS...discovery. The specimen was obtained from the late John Veevaert who had the material quantitatively identified |  | | Journal (article/letter/editorial) | | crystal drawing is reproduced in Dunn (1977). In the Northern Cascades of Okanogan County, Washington, the alkaline...Granite at the type locality for danalite in Rockport, Cape Ann, Massachusetts (Dunn 1976). In Argentina, genthelvite...attributed to the presence of copper and cobalt. In Africa, Mount Malosa in the Zomba-Malosa alkaline syenite-granite...southern Malawi is famous for exceptional crystals of aegirine associated with quartz and microcline (Petersen...pseudooctahedra to 1.6 cm and tetrahedra to 4.1 cm (Bruce Cairncross, pers. comm., January 2020). The genthelvite |  | | Journal (issue) | | mines, Kalahari Manganese Field, Northern Cape Province, South Africa ..................................crystals on matrix, 17.2 cm, from the NâChwaning I mine, collected in 1978. Private collection and photographer...(2015â2016) Scott A. Rudolph Paradise Woods (2008â2016) John Dabney (2015â2016) Daniel J. Record Irv Brown (2009â2015)...(2011â2016) John Schneider (2016) Dylan Stolowitz Steve Maslansky (2010â2016) Steven M. Goldfine & Bruce Carter...com APATITE Nagar, Hunza Valley, Gilgit District, Northern Areas, Pakistan, 11.5cm. Fine Minerals International |  | | Journal (article/letter/editorial) | | Names BRUCE CAIRNCROSS Photo courtesy Department of Geology, Rhodes University, South Africa. Department...PO Box 524, Auckland Park 2006 Johannesburg, South Africa brucec@uj.ac.za Edgar Donald Mountain (1901â1985)...locality is the Bultfontein diamond mine in Kimberley, South Africa, where it was found associated with...Romania; the Yubileinaya pegmatite, Lovozero Massif, Northern Region, Russia; and the Trinite mining claim,...associated with several other species including aegirine, chkalovite, halite, leucosphenite, natrolite |  | | Corporate Document (Series) | | Adelaide mine, Dundas {Photo: A Wright] Rear cover: Bismuthinite on quartz and siderite, Princess mine {Photo:...Mount Bischoff {Photo: A. Tuma] Siderite, Renison mine {Photo:]. Leeming] While every care has been taken...and mine locations, Dundas mineral field Geology and major deposits, Heazlewood mineral district ......Woolley (who conducted many of the XRDanalyses), and John Everard, Loyd Matthews and Ors Geoff Green and David...Harris, Nigel Ellis, Christo Lees, Richard Wolfe, John Richmond, Boyd Sweeney, Carol Bain, Frank Mihajlowits |  | | Journal (issue) | | Scovil photo. In this issue also: Twin Creeks mine, USA Scott KLEINE, Bryan K. LEES & Malcolm SOUTHWOOD...Spectacular orpiment specimen from Cut 62 in Twin Creeks mine, Nevada, USA; 9.6 cm high. Azurite Corporation specimen...well-crystallised orpiment at the Twin Creeks mine in Northern Nevada, USA, and it's subsequent extraction...them the mining company that owns and operates the mine, and the other a company that spe- Marshallsussmanite...the 2011 find at the Wessels mine, Kalahari Manganese Field, South Africa. Marshall Sussman with a specimen |  | | Report (issue) | | 6 cm, from the Anjanabonoina pegmatite, Betafo district, Antananarivo Province, Madagascar. Mineral Classics...among the most cherished products of the Ojuela mine at MapimĂ, Durango, Mexico: of the several styles...styles of âoldâ fluorite specimens from the great mine, the best known shows deep purple, transparent, cubo-dodecahedral...beginning around 2008, fresh ore exploitation in deep mine levels has yielded beautiful groups of gemmy, lustrous...13 excellent fluorite miniatures from the Ojuela mine, nine ânewâ and 4 âold,â the âoldâ showing typical |  | | Journal (article/letter/editorial) | | in the Kalahari manganese field, Northern Cape Province, South Africa. Three flats of this material, initially...collector specializing in the minerals of southern Africa. Preliminary analysis showed that the material...a hardness of 5.5. At the type locality (Wessels mine), it occurs as aggregates of blade-shaped crystals...attractive salmon-pink color and associated with aegirine, calcite, hydroxyapophyllite-(K), and serandite...has a special interest in minerals from southern Africa and the United Kingdom. 380ââ ROCKS & MINERALS |  | | Journal (issue) | | M ontreal Mine! L L The Mineralogical Record MAYâJUNE 2020 âą VOLUME 51 âą NUMBER 3 âą $25 & Wayne...gemgypsy@bellsouth.net MAYâJUNE 2020 Articles The Montreal mine, Iron County, Wisconsin ........................... 487 COVER: BARITE, 6.5 cm, from the Montreal mine. David and Karen DeBruin collection, ex Muscatine...Davis (2010â2019) Barry M. & Beth Kitt (2011â2019) Bruce Carter (2012â2020) Wally Mann (2012â2019) George...Trust (2015â2019) Herb & Monika Obodda (2015â2019) John Dabney (2015â2019) Jeff Kremer (2015â2019) Dan and |  | | Journal (issue) | | Los Angeles, CA Librarian Curtis P. Schuh Founder John Sampson White Editing, advertising 4631 Paseo Tubutama...crystal, 10.5 cm, with quartz, from the Yaogangxian mine, Hunan, China. Private collection; Jeff Scovil photo...INTRODUCTION The Palitra pegmatite, located on the northern flank of Kedykverpakhk Mountain in the Lovozero...well before the moisture and dust of an operating mine had had time to exert their destructive influences...of the Lovozero Massif in the Kola Peninsula, northern Russia. Figure 2. Northeast cliff face of Kedykverpakhk |  | | Journal (article/letter/editorial) | | Minerals & Crystals of Utahâs Bingham Canyon Copper Mine by Jerry North. Published by the author (www.DisplaysofNature...Erastus Bingham and sons in 1848, a well-written mine history, a discussion of the advances in ore haulage...related mineral occurrences into the context of mine geology; it contains a simplified geologic map that...sentences about the mineralâs occurrences in the mine. There are some pleasant surprises here, for even...to the exceptional pyrite specimens for which the mine is relatively well known. Missing in extraordinary |  | | Journal (article/letter/editorial) | | Continues by Bruce Cairncross and Nicolas J. Beukes. Struik Nature, PO Box 1144, Cape Town 8000, South Africa...For those familiar with Bruce Cairncrossâs earlier booksâ Minerals of South Africa (Cairncross and Dixon...Dixon 1995), The Manganese Adventure: The South African Manganese Fields (Cairncross, Beukes, and Gutzmer...descriptive and geographic mineralogist in southern Africa, maintains a large private and research mineral...geologically complex and mineralogically intriguing district. For the geologist, the book is a quick and ready |  | | Journal (article/letter/editorial) | | (specimen and cut stones), N'Chwaning mine, Hotazel, South Africa. Martin Zinn specimen and gemstones,...photo. May/June: Pyromorphite,Daoping Lead Zinc mine, Guangxi, China. Fine Minerals International specimen...September/October: Rhodochrosite on sulfides, Sweet Home mine, Alma, Park County, Colorado, Martin Zinn specimen...Copper, Cliff mine, Keweenaw County, Michigan. A. E. Seaman Mineral Museum specimen, John A. Jaszczak photo...34043 Aegirine and Associated Minerals from Mount Malosa, Malawi, B. Cairncross, 31-37 Africa, azurite |  | | Journal (issue) | | Los Angeles, CA Librarian Curtis P. Schuh Founder John Sampson White Editing, advertising 4631 Paseo Tubutama...Large barite crystals from the Elandsrand gold mine, South A fr ic a .....................................served as a part-time teacher and was very active in local school sports. His greatest passion remained mineral...Delores La Beau Lynn & Francis Mason Jan & Bob Mehney John Pierce Lucy Reeves Pete & Ruth Rittersdorf Dana...L.A. County Paterson (NJ), Brumado district Museum, Himalaya mine $10 (Brazil), Bosch Collection $10 |  | | Journal (article/letter/editorial) | | F or some time now, outstanding crystals of aegirine have been collected at Zomba, Malawi (see fig...and Grossman 1991; Robinson and King I99 I). The aegirine was associated with aesthetic smoky quartz, microcline...Malawi.* Zomba is a village located south of Zomba Mountain. A few South African collectors have made hips...Geology The geology of the region that contains the aegirine-bearing pegmatites has been fairly well documented...mentions the presence of pegmatites containing large aegirine crystals. W o more-readily-accessible articles |  | | Book | | Understanding Minerals & Crystals Bruce Cairncross Terence McCarthy Published by Struik Nature (an...(an imprint of Penguin Random House South Africa (Pty) Ltd) Reg. No. 1953/000441/07 The Estuaries No 4...Crescent), Century City, 7441 PO Box 1144, Cape Town, 8000 South Africa Visit www.randomstruik.co.za and join...text, 2015: Bruce Cairncross and Terence McCarthy Copyright © in photographs, 2015: Bruce Cairncross,...published edition, 2015: Penguin Random House South Africa (Pty) Ltd Publisher: Pippa Parker Managing editor: |  | | 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 |  | | Show/Event (guide) | | Technical Session Moderator - Carl Francis Exhibits - Bruce Gaber Program Notes Cover Art - Susan Robinson Emcee...Auction Solicitors General - Bruce Gaber and Gloria Staebler Auction Honcho - Bruce Gaber Auction Technical...Chamberlain, Steve Chamberlain, Jane Cooke, Betty Fetter, Bruce Gaber, Dan Imel, Cindi Newman, Keith Newman, Pat...Mineralogy 7 Diamonds: Myths and Misconceptions by John Betts 2 9 The Diamonds of Namibia by Gene LaBerge...more international participation than ever before. Bruce Gaber has arranged a fine set of exhibits. Quintin |
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