 | | Journal (article/letter/editorial) | | Printed in The Netherlands ARCHEAN SEDIMENTARY BARYTE DEPOSITS OF THE SWAZILAND SUPERGROUP (BARBERTON...ABSTRACT Reimer, T.O., 1979. Archean sedimentary baryte deposits of the Swaziland Supergroup (Barberton...Archean Swaziland Supergroup five major sedimentary baryte occurences are described. Two of the deposits are...the Threespruit Formation (lower Onverwacht Group). The baryte forms up to 12 m thick zones, alternating...Hooggenoeg Formation (upper Onverwacht Group) a lens-shaped baryte deposit is found within a chert band |  | | Journal (article/letter/editorial) | | About 40 miles northeast of Montgomery in Coosa County there is an outcrop that carries considerable tin...drusy quartz; the locality is the Aurora Quicksilver Mine in San Benito Co., Calif. A new occurrence for scheelite...might find interesting. It is scheelite from Marin County, California. It is of primary interest as it is...Andreas fault, extending from Marin County to San Luis Obispo County. Included in the Sur Series are limestone...Such beds are found in the vicinity of the Marin County discovery and are probably related to its origin |  | | Journal (issue) | | State Line Kimberlite District, Colorado & Wyoming, USA By Philip Persson, PerssonRareMinerals.com 6 Page...State Line Kimberlite District, Colorado & Wyoming, USA Philip Persson, PerssonRareMinerals.com While small...Stateline District, most notably from the Kelsey Lake Mine, a cluster of 8 diamondiferous pipes near the Wyoming...gem-quality octahedral crystal from the Kelsey Lake Mine, Stateline District, Colorado. (Photo from Coopersmith...would be come Colorado’s first commercial diamond mine, Kelsey Lake. Discovered by a local prospector in |  | | Journal (issue) | | May 13 th 2018 with some collecting for a small group. Close of Meeting Colin Brough THE CALDBECKS RE-VISITED...interest were: Stolzite (PbWO4) from Brandy Gill mine and Wulfenite (PbMoO4) from Poddy Gill. Generally...with a crude hexagonal outline - from the Carrock mine The very rare tsumebite from Roughton Gill. Pale-green...crystals of brochantite. Duftite from Brandy Gill Mine. Dull grey-green coloured crystals with acute terminations...pyromorphites from the Driggith and Roughton Gill mine tips, linarite from Red Gill and blocky yellow pyromorphite |  | | Journal (article/letter/editorial) | | University of Maryland, College Park, MD 20742, USA Bernard-May-Str 43, Wiesbaden, 65203, Germany a...the Theespruit Formation in the lower Onverwacht Group (Kröner et al., 1996). Characteristic lithologies...Onverwacht Group; (b) Vergelegen barite, ca. 3.41 Ga Kromberg Formation, upper Onverwacht Group; (c) Stentor...Formation, Fig Tree Group; and (d) Barite Valley, 3.26–3.23 Ga Mapepe Formation, Fig Tree Group. D.L. Roerdink...30°39′ 39″E), 4 km south of the Stolzburg asbestos mine. Barite occurs in a narrow chert band that likely |  | | Journal (article/letter/editorial) | | sediments. Associated minerals include authigenic baryte, sphalerite, pyrite (some framboidal), celestine...mineralized. Minerals recorded include calcite, baryte, celestine (rare), sphalerite, pyrite, and chalcopyrite...or orange sphalerite, pyrite (some framboidal), baryte, and less commonly with dolomite, celestine, quartz...pyrite, sphalerite, and to a very limited extent baryte also replace shell debris. Very small amounts of...in authigenic sphalerite. Water-clear authigenic baryte, developed in some of the large rotiforme Zone |  | | Book | | oxide) and magnetite (iron oxide) that had separated out of homogeneous ilmenite (iron titanium oxide), which...economically significant member of the thiospinel mineral group. Violarite can furthermore form as a primary phase...potential, and speciation and concentration of sulfur, iron, and nickel in solution. Available thermodynamic...does not provide evidence for the formation of an iron sulfide coupled with the violarite precipitation...precipitation. Therefore, it can be assumed that the excess iron was removed in the solution: Pentlandite þ 1.625 |  | | Journal (issue) | | EDITORIAL COVER PHOTO: Bayldonite. Penberthy Croft mine, St. Hilary, Cornwall. Globular aggregates to 0...Simon Camm· Michael Merry ------- 16 ------THE VAN MINE S.J.S. Hughes -------26 ------A JOURNEY THROUGH... MINERAL NOTES SIEGENITE FROM ERGLODD MINE, TALYBONT, DYFED, WALES RGLODD Mine is located 200 metres east of...microprobc showed the presence of nickel, cobalt and iron in the ratio 22: 14:6. Siegenite occurs most commonly...acicular mineral (possibly millerite), and a chlorite group mineral. ACKNOWLEDGEMENTS Thanks are due to the |  | | Report (issue) | | Greenland GEOLOGY AND ORE The Black Angel lead-zinc mine at Maarmorilik in West Greenland No. 2 - 2003 (2nd... GEOLOGY AND ORE 2 / 2003 The Black Angel lead-zinc mine at Maarmorilik in West Greenland View from north-west...SUPERIOR CRATON ▲ 2 500 km ▲ The Black Angel mine took its name from a pelite outcrop that forms a...situated there from the 1930s. The only access to the mine from these facilities was by two aerial tramways...epicontinental marginal basin c. 2 Ga ago. In the mine area, where the formation has been tectonically |  | Walter, Benjamin F., Steele-MacInnis, Matthew, Giebel, R. Johannes, Marks, Michael A.W., Markl, Gregor (2020) Complex carbonate-sulfate brines in fluid inclusions from carbonatites: Estimating compositions in the system H2O-Na-K-CO3-SO4-Cl. Geochimica et Cosmochimica Acta, 277. 224-242 doi:10.1016/j.gca.2020.03.030 | Journal (article/letter/editorial) | | thenardite, gypsum, glauberite, celestite, syngenite, baryte), oxides (magnetite), silicates (larnite, merwinite...the Badberg, Orberg, Degenmatt, and Haselschacher Buck (Fig. 1B). The superregional, rift-related Tuniberg...part (Badberg) from the eastern part (Haselschacher Buck, Degenmatt and Orberg). The displacement on this...represents a shallower slice compared to Haselschacher Buck and Degenmatt (Brauch et al., 2018; Walter et al...two major bodies Badberg (N = 7) and Haselschacher Buck (N = 1), and from the Orberg apophysis (N = 2). |  | | Journal (article/letter/editorial) | | bought was labeled celestine, the barite labeled baryte. Seems museums aren't the only thing in a tur...Bob Pedersen of the Society. You can get it for a buck and a half, 645 Maryanna Ln., Monrovia, Calif. 91016...subscription to MR. Then you get the Fleischer deal for a buck! It has been adopted as one of the references used |  | | Journal (issue) | | ., No 1. Mimetite, variety Campylite, Dry Gill mine, Caldbeck Fells, Cumbria . _ ... Specimen: 135...diamond; Jupiter, to tin and the sapphire; Mars, to iron and the ruby; Mercury, to quicksilver and the amethyst;...(Telephone 0872 223227). August 2nd: Visit to Dufron Mine, Dufton, near Appleby. Meet at Dufton Village municipal...01-4171-680). October 4th: Visit to Force Crag Mine, Keswick. Meet at Braithwaite Church, by Coledale...also yields specimens of calcite, chalcopyrite, baryte, gypsum, quartz, and fossil plant remains. GEOLOGY |  | | Journal (issue) | | based at Leicester University. In 1983 a local group of the Society was formed in southeast England,...Symposium lectures and newsletter articles. Local group meetings continue to be well attended and, for the...micromounter, the ideal mineral specimen is an aesthetic group of minute crystals mounted with a craftman's care...Figure 3. CALEDONITE (0.25mm) on LINARITE: Red Gill mine Caldbeck Fells, Cumbria. R.S.W. Braithwaite Collection...the rare ban·um zeoliteham1otomeat Pen-y-Cl1111 Mine is thoughtto be only the third locali!J•forthe mineral |  | Dill, H.G., Berner, Z., Kaufholt, S., Weber, B., Metz, U. (2013) Facies-related baryte mineralization bearing Cu–Zn sulfides in Miocene estuarine deposits of the upper Rhein Graben (Wetterau, Central Germany) Sedimentary Geology, 296. 55-71 doi:10.1016/j.sedgeo.2013.08.003 | Journal (article/letter/editorial) | | www.elsevier.com/locate/sedgeo Facies-related baryte mineralization bearing Cu–Zn sulfides in Miocene...Knight Keywords: Baryte Hydrothermal Estuary Miocene Central Germany a b s t r a c t Baryte with or without...transition from the delta to the estuarine funnel, baryte is of very widespread occurrence. Its variegated...Elsevier B.V. All rights reserved. 1. Introduction Baryte [BaSO4] has been recorded from a wide range of..., 1999; Bonny and Jones, 2008). In places, the baryte concentration may even achieve ore grade (Turner |  | | Book | | Miguel Hortiguela, LPPO Illustrations: Crowle Art Group Printed in China The publisher gratefully acknowledges...ofjust a few minerals; quartz and the feldspar group are the most abundant processes — called biominerals...be minerals. Microcline, Crystal Peak, Colorado, USA * 12 x 9x 5 om MINERALS: PRODUCTS OF A CHANGING...zeolites. Calcite (septarian nodule), San Juan County, Utah, USA * 18 x 24x Bem 14 | MINERALS: PRODUCTS...three basic types of meteorites: stony, stony iron and iron-nickel. Stony meteorites, as you might guess |  | | Journal (article/letter/editorial) | | 822). Inorganic (e.g. silicates, sheet silicates, iron oxy/hydroxides) and organic (humic and fulvic substances)...alteration of waste matrices [e.g. nuclear waste glass (Buck M. BOUBY ET AL. and Bates, 1999)] and by engineered...area to volume ratio as observed for example in iron oxy/ hydroxides (Cornell and Schwertmann, 1996);...spectrophotometer (LambdaMax LC Modell 481, Waters, Milford, USA) which is used to monitor the organic matter content...carboxylated polystyrene reference particles (Magsphere, USA) of different sizes (24, 105 and 207 nm) were used |  | | Journal (issue) | | “Fools' Gold” Refreshments provided by the Faceting Group It’s always in season... Pg 4 Pebble Pups Pg...Calendar April & May 2016 Tue., May 3 & June 7—Fossil Group, 7 p.m., Senior Center. Jerry Suchan 303 648-3410...23—Crystal Group, 7 p.m., Senior Center. Kevin Witte, 719 638-7919 Thu., May 26 & June 23—Faceting Group, 7 p...Appointment Only—Jewelry Group, Bill Arnson, 719 337-8070 Appointment Only—Lapidary Group, Sharon Holte, 719...expanding Lake would reach. It seems that the city and county building “experts” were trying to “fool mother |  | | Book | | Africa, Namibia), Chenoweth W. (Colorado Plateau, USA), Coste A. (Limousin, France), Cuney M. (granites...Grauch R (western USA), Gautier A. (breccia pipe deposits, USA), Halladay Ch.R (eastern USA), Harshman E.N...N. (Wyoming Basins, USA), Hruby J. (CSFR), Kolb S. (Bavaria, W-Germany), Krol W. (Eastern Europe), Matos... N.M., USA), Smith RB. (South Texas, USA), Tan H.B. (Canada), Thamm J. (Colorado Plateau, USA), Tauchid...Voss C. (general), Wallace A.R (Schwartzwalder, USA), Wutzler B. (Australia). The numerous manuscripts |  | | Report (issue) | | hereabouts is mineralized and contains abundant baryte crystals. S01ne of tl1e harder bands seen i11 tl1e...photo grapl1 are probably due to cementation by baryte. This deposit is regarded as a water-lain deposit...cast-south east at 5 to 7 ° . It contains many baryte crystals due to n1incralization along adjacent...adjacent fault planes. The bedding pla11es rich in baryte weather prominently. B . Scarp of Keuper Conglomerate:...which here abouts is commonly n1ineralized with a baryte- and haematite-rich cement enclosing the i11dividual |  | | Journal (article/letter/editorial) | | sulfates Stratigraphic unit Hormuz Formation Bakoye Group Hiittenberg Formation Redstone River Formation ...Formation Newland Formation Fig Tree Group Warrawoona Group Age a (~345 (Ma) (%o) 550 590 680...information on samples is given below. Warrawoona Group, Australia (3500 Ma). Two barite samples from the...ratio has been measured at 0.700520 + 9. Fig Tree Group, South Africa (3350 Ma). The sulfur isotope value...and an 87Sr/86Sr-value of 0.709234 +_ 15. Bakoye Group, West Africa (590 Ma). The sulfur isotopic ratio |  | | Journal (issue) | | past and it may help strengthen the membership and iron out the problems we have previously encountered...went out collecting over the dumps at Hartsop Hall mine in the Lake district, looking primarily for wulfenite...the dumps or if it is an actual specimen from this mine I don't know?, I do know that I haven't found any...in 1920, is presented annually to a member, or group of members, for 'work of merit' connected with the...Society's seven branches to become an Associated Group which has now been done. The total cost of the association |  | | Journal (article/letter/editorial) | | chemically precipitated component in Early Precambrian iron formations and the evolution of the terrestrial...precipitated component in Early Precambrian (~-2.3 Ga) iron formations (IFS) displays (Sm/Ybb < 1 and (Eu/Sm)s~...quantitatively scavenged onto precipitating iron oxihydroxides or iron carbonates and deposited with the chemically...Precambrian IFS. INTRODUCI’ION CHEMICAL SEDIMENTSSUCH as iron formations (IFS), jaspilites, phosphorites, limestones...component in Early Precambrian (>2.3 Ga) IFS. The term “iron formation,” as it is used throughout this 2239 |  | | Journal (issue) | | porn-porn baryte on the 1994 poster) and the cover of the SMLS 100th edition journal cover (a baryte rose...1 Al'1 5 MUNICH SHOW October 15-l6th 1994 A group ofsix ofus, Eileen and Weng Lim. Josie SaiL Richard...honorary member Terry Read man u1 his Lady Luck mine) were much u1 evidence One unusual opal, a b:inded...Australia and the new find ofCrocoite from the Adelaide mine in Dundas, Tasmani..i - Uiese crystals are hollow...squilfe in section and more orange than the Red Lead mine material - they sit on a wlute matnx and are beautiful |  | Hickman-Lewis, Keyron, Gautret, Pascale, Arbaret, Laurent, Sorieul, Stéphanie, De Wit, Rutger, Foucher, Frédéric, Cavalazzi, Barbara, Westall, Frances (2019) Mechanistic Morphogenesis of Organo-Sedimentary Structures Growing Under Geochemically Stressed Conditions: Keystone to Proving the Biogenicity of Some Archaean Stromatolites?. Geosciences, 9 (8) 359 doi:10.3390/geosciences9080359 | Journal (article/letter/editorial) | | layer at the base of the upper green layer, with iron oxide (orange arrow) on filaments. (G) Vertical...base ofprecipitation the upper green layer, with iron oxide (orange mat arrow) precipitation on filaments...complexity haematite; = quartz; white = = baryte; red = baryte; blue == void void space space (araldite...haematite, baryte, and void space. Scan parameters: objective Nikon E Plan 20 ×, 5 × 4002×, 400 baryte, and...red red = = iron iron Photograph oxide (haematite); (haematite);white white==baryte; baryte;blue blue = |  | | Report (issue) | | W. T. Schaller, Afwillite NMNH 95237 Dutoitspan Mine, Kimber¬ ley, South Africa Dutoitspan Ammonioborite...Geological Survey, 1950) Trinity Anemousite County, California. Contributions to Mineral¬ (discredited...Vonsen, 1920) NMNH 106112 from the Hillside Mine, Yavapai County, Ari¬ L. G. Berry, 1947. Composition and...Aluminocopiapite Utah NMNH K. J. Murata, Trinity County, California M. C. Bandy, 1938. Utah. J. M. Axelrod...Mountain, from Mine, Yavapai County, Arizona (L. J. Cabri, 1976) Island Group (F. Haycock, 1927) |
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