 | | Journal (article/letter/editorial) | | Collecting Microminerals in Leadville, Lake County, Colorado All photographs by the author of specimens...Baringer Hill, Texas; Bisbee, Arizona; Magnet Cove, Arkansas; and several localities in Colorado, particularly...through the early 1980s, I made numerous trips to Colorado, and I usually had some time to check the many...I tried what had been the A. Y.–Minnie and Moyer mine complex in California Gulch and did locate a small...side of California Gulch, including the A.Y.–Minnie and Moyer mine complex, early 1900s. Figure 5. A 2-mm |  | | Journal (article/letter/editorial) | | pyromorphite, smithsonite, malachite, azurite, and various iron oxides. Hundreds of specific cerussite occurrences...district, large twinned crystals from the Hilltop mine, and very sharp single and twinned crystals from...Shattuck shafts, have been reported from Cochise County. An unusually large number of snow-white jackstraw...crystal groups were recovered from the Flux mine, Santa Cruz County. Magnificent single and twinned crystals...of the Mammoth-Saint Anthony mine in the Mammoth district, Pinal County, and beautifully crystallized |  | | Journal (issue) | | Julius Weber Mamaroneck, New York COLORADO ISSUE #2 Articles Colorado locality index.............................. 323 by B. L. Muntyan What’s new in Colorado minerals? ...................................... Famous mineral localities: the Home Sweet Home mine ..................................................339 by M. I. Jacobson The San Juan Mountains of Colorado ..................................349 by J. A...quartz, 10 cm tall, from the Yucca Hill claim, Park County, Colorado. Richard A. Kosnar specimen; photo |  | | Journal (issue) | | Marvin Hanner Additions to the Ore Mineralogy of Colorado.................................................by Donald Grybeck Crystallized Minerals of the Colorado Mineral Belt....................................time I saw the famous Bancroft/ W ilber Alma rhodochrosite it snapped my head around from 40 feet away...had achieved considerable fame, and the right to mine diopside was obtained that year by G eorge L. English...thereafter. In 1971 both the land and the right to mine diopside were purchased by the present owners, Schuyler |  | | Book (edition) | | OX5 1 GB, UK 225 Wyman Street, Waltham, MA 02451, USA Copyright © 2015, 2008 Elsevier B.V. All rights reserved...sometimes red tinges, cobalt shows pink shades, while iron displays pronounced tones of red, brown, and occasionally...pore-fillings of gold (yellow). Right: Finely laminated iron oolith with a relatively coarse core of oolite fragment...form from magnetic precursors, such as greigite (iron-thiospinel; Fe3S4) which, during mild pore water... milky, brilliant clear to milky 46 yes Rhodochrosite Defernite Olivine Garnet lamellar Siderite |  | | Journal (article/letter/editorial) | | Bickford, M.A. Hamilton, G.L. Wortman and B.M. Hill 1017 Vol. 38, No. 8, 2001 Geochemistry and oxygen...Merensky reef, Bushveld layered complex, South Africa— A.Y. Barkov, R.F. Martin, R.J. Kaukonen, and T.T. Alapieti...tilleyite- and gehlenite-bearing skarns from Cornet Hill, Apuseni Mountains, Romania—S. Marincea, E. Bilal...Implications of aqueous silica sorption to iron hydroxide: mobilization of iron colloids and interference with sorption...reduction and enhanced mobilization of arsenic in mine tailings—R.E. Macur, J.T. Wheeler, T.R. McDermott |  | | Journal (issue) | | T. Trofimov Nikolay P. Yushkin John S. White (USA) English (Style) Design idea Layout Photo: Layout...John S. White (USA), Peter Modreski (USA), Edward Rosenzweig (USA), John F. Rakovan (USA) Dmitrii A. Kilpio...Almanac Mineral-Almanac Ltd, USA 10896 W. Beloit Pl. Lakewood, CO 80227, USA E-mail: minbooks@online.ru...Slovakia. Inv. No. A.y.188. Photo: A. Schumacher Graphite (35 x 32 cm) of the Alibert Mine, Botogol Mt....�--�-�'-'- Nephrite bowl, 13 cm high. Baikal Lake district. Inv. No. A.y.952, from the estate of Earl Moritz of |  | | Journal (issue) | | known as rhodochrosite. Most of it is fairly pure, averaging 35 per cent Mn. The Emma mine at Butte has...rosite occurs so that it has been profitable to mine it for at least 25 years. The tonnages have never...quartz, with lead, zinc and iron sulfides also present. The rhodochrosite amounted to about 40 per cent...of the quartz was finely disseminated in the rhodochrosite and the sulfides were interlocked with the quartz...composite grains would have the same density as rhodochrosite. It was decided that although the method was |  | | | | surrounded ce ne white calcite, from!iheBluebell Mine; Riondel, Digitized by the Internet Archive...fractions. The more mafic fractions with darker iron- and magnesium-rich minerals crystallize first and...cassiterite, calcite, aragonite, dolomite, siderite, rhodochrosite, malachite, azurite, gypsum, anhydrite, baryte...world. The Shield’s rich deposits of copper, nickel, iron, lead, zinc, gold, silver, cobalt, uranium, platinum...a : jagged irregular surface like that of broken iron. Test: Colour and the fact that it is sectile. Similar |  | | Book | | fractions. The more ma.fie fractions with darker iron- and n1agnesiun1-rich 1ninerals crystallize first...cassiterite, calcite, aragonite, dolo1nite, siderite, rhodochrosite, n1alachite, azurite, gypswn, anhydrite, baryte... p. 170 mica {white, brown, black), p. 204 rhodochrosite (red, pink), p. 152 rhodonite (red, brown-red)...world. The Shield's rich deposits of copper, nickel, iron, lead, zinc, gold, silver, cobalt, uranium, pl.atinum...in a jagged in-egular surface like that of broken iron. Test: Colour and the fact that it is sectile. |  | | Journal (issue) | | Hazen The best grossular garnets from the Jeffrey mine, Asbestos, Quebec ........ .......................1972, and considered to be the finest known Jeffrey mine grossular specimen. Marco Amabili collection; James...(deceased) Peter L. Via Salim Edde Daniel Trinchillo Lyda Hill Scott A. Rudolph Daniel J. Record Gail & Jim Spann...York, Pennsylvania (Chester County), Arkansas, Idaho, Iowa, Washington, Colorado (two), New Mexico (the Bingham...Bingham Canyon mine), Nevada, Arizona (two), Mexico, Brazil, Northern England, Cornwall and Devon, Ste-Marie-aux-Mines |  | | Journal (issue) | | Pandaite • copper arsenic sulfide • Chinkuashih mine, Keelung, T aiw an • 4x5 $ 5 0 .0 0 , 2x3 $ 2...barium strontium m em ber of the pyro- • Panda Hill, T an za n ia chlore-m icrolite series l x l $...unsolicited material. feature articles page Rhodochrosite Crystal Localities in the W e s t ............great sepcimens from Fairfield, Utah; M am m o th mine, Ariz.; Pala, Cal. tourmalines; magnificent epidotes...epidotes from Alaska; and Central City, Colorado pyrites (with diploids!) supplied by Ed Over and A rthu |  | | Journal (article/letter/editorial) | | Firefly-Pigmay mine, Sect. 30, T. 28 S, R. 26 E, 16 km east of La Sal, San Juan County, Utah, U.S.A. Occurrence:...Mg(V2O6)•7H2O, a new mineral species from the Firefly–Pigmay mine, Utah: descriptive mineralogy and arrangement of...ONOCLINIC Locality: The Tanco pegmatite, Bernic Lake, Manitoba, Canada. Occurrence: Found in a lithiophilite...unidentified phases, spodumene, quartz, cookeite, rhodochrosite, “apatite” and sphalerite. General appearance:...GRICE, J.D. (2000): The Tanco pegmatite at Bernic Lake, southeastern Manitoba. XV. Ercitite, NaMn3+PO4(OH)(H2O)2 |  | Collins, Donley S., Cobban, Robert R., Foord, Eugene E., Murphy, Jack A. (1989) Bibliography for update and revision of U.S.G.S. Bulletin 1114, Minerals of Colorado -- a 100 year record, by Edwin B. Eckel, Part A - Paper copy --Bibliography data file disks. Open-File Report Vol. 1989 (89-206) US Geological Survey doi:10.3133/ofr89206a | Report (issue) | | Survey Denver, Colorado Department of Geology, Denver Museum of Natural History Denver, Colorado NOTE FOR...revision of U.S.G.S. Bulletin 1114, Minerals of Colorado A 100 year record, by Edwin B. Eckel By Donley...Prepared in cooperation with Friends of Mineralogy - Colorado Chaptar, and the Denver Museum of Natural History...references dealing with the mineralogy of the state of Colorado. It is part of a more than 10 year effort to update...and revise U.S.G.S. Bulletin 1114, Minerals of Colorado: A 100 year record, by Edwin B. Eckel (1961). |  | | Journal (article/letter/editorial) | | unmineralized calcite-dolomite earbonatites andore- rhodochrosite, magnesite, manganosiderite, etc.),phosphates...maybeinvertedor repeated. ousveinscontaining rhodochrosite, chicrite,quartz,albite,K maybelacking, feldspar...pyrolusite, and kaolinitc tarybasins. Siderite, rhodochrosite 12.67 Quartz+ feldspar 44.45 60.38 5.37...111/58 Pyrochlore 0.70371 7,000 Siderite,rhodochrosite, rutfie 16.13 Dolomite 10.08 Anatase 6...Arcticgeology Institute,p. 112123 (in Russian). Belyakov, A.Y.,Georgievskaj, O.M., andGrjaznova, J.A.,1989,Chemistry |  | | Journal (article/letter/editorial) | | that was investigated is found at the Byrud emerald mine, in Eidsvoll, Akershus, southern Norway. The mineralization...Fluoro-magnesiohastingsite from Dealul Uroi (Hunedoara county, Romania): Mineral data and crystal structure of...quarry at Dealul Uroi, 10 km east of Deva, Hunedoara County, Romania. Dealul was an active volcano in the Apuseni...friedelite, and humite-group minerals. The Praborna mine is the type locality for roméite, piemonite and...Manganiandrosite-(Ce) was collected on the dumps of the mine and occurs as elongated grains a few tens of micrometers |  | Strakhovenko, Vera, Subetto, Dmitry, Ovdina, Ekaterina, Belkina, Natalia, Efremenko, Natalia (2020) Distribution of Elements in Iron-Manganese Formations in Bottom Sediments of Lake Onego (NW Russia) and Small Lakes (Shotozero and Surgubskoe) of Adjacent Territories. Minerals, 10 (5) 440 doi:10.3390/min10050440 | Journal (article/letter/editorial) | | Distribution of Elements in Iron-Manganese Formations in Bottom Sediments of Lake Onego (NW Russia) and Small...(FMF) of Lake Onego (NW Russia) and small lakes located in its catchment area were studied. The lake waters...bottom sediments throughout the entire water area of Lake Onego and the rhythmic structures of the nodules...crystalline Mn mineral phases (pyrolusite, rhodochrosite) or crystalline Fe mineral phases (siderite...water–sediment interface. Keywords: Lake Onego; small lakes; NW Russia; iron-manganese formations; bottom sediments; |  | Subetto, Dmitry, Rybalko, Alexandr, Strakhovenko, Vera, Belkina, Natalia, Tokarev, Mikhail, Potakhin, Maksim, Aleshin, Mikhail, Belyaev, Pavel, Dubois, Nathalie, Kuznetzov, Vladislav, Korost, Dmitry, Loktev, Andrei, Shalaeva, Natalia, Kiskina, Alexandra, Kostromina, Natalia, Kublitskiy, Yuriy, Orlov, Alexander (2020) Structure of Late Pleistocene and Holocene Sediments in the Petrozavodsk Bay, Lake Onego (NW Russia) Minerals, 10 (11) 964 doi:10.3390/min10110964 | Journal (article/letter/editorial) | | and Holocene Sediments in the Petrozavodsk Bay, Lake Onego (NW Russia) Dmitry Subetto 1,2, * , Alexandr...conducted in 2015–2019 in the Petrozavodsk Bay of Lake Onego, NW Russia. The aims of these investigations...physicochemical characteristics of the environment. Keywords: Lake Onego; bottom sediments; Late Pleistocene; Holocene;...pockmarks 1. Introduction Geological explorations of Lake Onego have been conducted since the 1960s, but research...lithostratigraphic studies [2]. These studies have determined the lake basin formation about 15,000 years before present |  | Johnson, J.E., Webb, S.M., Condit, C.B., Beukes, N.J., Fischer, W.W. (2019) Effects of metamorphism and metasomatism on manganese mineralogy: Examples from the Transvaal Supergroup. South African Journal of Geology, 122 (4) 489-504 doi:10.25131/sajg.122.0034 | Journal (article/letter/editorial) | | Sciences, University of Michigan, Ann Arbor, MI 48109, USA e-mail: jenaje@umich.edu S.M. Webb Stanford Synchrotron...Synchrotron Radiation Lightsource, Menlo Park, CA 94025, USA e-mail: samwebb@slac.stanford.edu C.B. Condit Department...Massachusetts Institute of Technology, Cambridge, MA 02139, USA e-mail: ccondit@mit.edu N.J. Beukes Department of...California Institute of Technology, Pasadena, CA 91125, USA e-mail: wfischer@caltech.edu © 2019 December Geological...early Paleoproterozoic age carbonate-, shale-, and iron formation-bearing marine strata. We sampled contemporaneous |  | Och, Lawrence M., Müller, Beat, Voegelin, Andreas, Ulrich, Andrea, Göttlicher, Jörg, Steiniger, Ralph, Mangold, Stefan, Vologina, Elena G., Sturm, Michael (2012) New insights into the formation and burial of Fe/Mn accumulations in Lake Baikal sediments. Chemical Geology, 330. 244-259 doi:10.1016/j.chemgeo.2012.09.011 | Journal (article/letter/editorial) | | the formation and burial of Fe/Mn accumulations in Lake Baikal sediments Lawrence M. Och a, Beat Müller...Keywords: Lake Baikal Sediments Early diagenesis Iron and manganese cycling a b s t r a c t Lake Baikal...deepest and oldest lake on Earth. Extraordinary features of the lake are manganese and iron‐enriched layers...reserved. 1. Introduction Lake Baikal is the deepest and most voluminous lake on Earth with a maximum depth...depth of 1637 m and a surface area of 31,700 km2. Lake Baikal is also very ancient with an estimated age |  | | Book | | crystal drawings for publication. H. Earl Pemberton Lake Elsinore, California Contents Preface/ v 1. Introduction...eleven geomorphic provinces (See Map 1-1). From the lake-bed deposits of the Basin Ranges and Mojave Desert...are reported by county of occurrence. Map 1-2 shows the county boundaries and county names. When possible...II TRANSVERSE RANGES X PENINSULAR RANGES XI ~ COLORADO DESERT GOLD-BEARING AREA Map 1-1. Map of California...,o Map 1-2. Outline map of California showing county boundaries. __ _) 4 MINERALS OF CALIFORNIA |  | | Journal (issue) | | i.l 1U.r( ; l(,' l;o _of- d;ffaev.rc;,::i~, ,es a.y-e etreMal\ -5- iS r-,=. bi.e. Musl· ~ DMMv,\...Merritt. MALACHITE Collected in 1980 from Castle Hill quarry, Somerset. A rare form as curved strands...AGARDITE(Y) Collected in 1987 from Marke Valley mine, Cornwall. Identified by David Green and photographed...FLUORITE Collected about 15 years ago from Yew Tree mine in Weardale. A beautiful combination of the two...Eagle Crag mine. A site memorable for a 3 mile walk across the hills, entry into the mine through an |  | | Book | | 193-256 137-208 129-192 209-264 193-256 [ [ COLORADO-Ill] 177-256 121-184 89-168 1-120 1-88 [ ...177-256 185-280 169-248 [ 425-528 337--400 COLORADO-II] 321--400 337--400 ARIZONA-Ill] 337--400...69-132 65-128 1-64 11 / 1980 20 I 1989 [ COLORADO-I] [ 289-352 385-448 [ AUSTRALlA] 353-504...On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN |  | | Journal (article/letter/editorial) | | area. The presence of Mn-carbonate such as rhodochrosite and manganocalcite (locally Mn-silicate, e.g...are primarily quartz, Mn-carbonates, commonly rhodochrosite and manganoan calcite, as well as adularia (Fresnillo;...formation of calcite veins and Mn-rich carbonates (rhodochrosite or manganocalcite) that are commonly barren...g. Paradise peak, Goldyke, Santa Fe, Washington Hill, Masonic, Goldfield) and IS deposits (e.g. Comstock... alteration zones (with pyrite but no remaining iron oxide or ferrous silicate near the central channelway |  | | Journal (article/letter/editorial) | | . . . . . . . . . . . . . . . . . . . . . . . . Iron . . . . . . . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . . . . 9.2. Magmatic iron deposits . . . . . . . . . . . . . . . . . . . ...Structure-related iron deposits . . . . . . . . . . . . . . . . . . . . . . . . . 9.4. Sedimentary iron deposits...Metamorphic iron deposits. . . . . . . . . . . . . . . . . . . . . . . . . . . 9.6. Iron supply and use...with a particular group of ore deposits such as the iron or non-sulfidic zinc deposits (Zitzmann, 1977; Boni |
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