 | Megaw, Peter K. M., Huizing, Terry E., Richards, R. Peter, Post, Jeffrey E. (2018) Connoisseur's Choice: Distinctive Twinned Calcite from the Palmarejo Mine, Chihuahua, Mexico. Rocks & Minerals, 93 (5) 434-441 doi:10.1080/00357529.2018.1477010 | Journal (article/letter/editorial) | | manganese oxide–included calcite (principally romanèchite and chalcophanite; J. E. Post) that is itself...that is itself rimmed by a later stage of black romanèchite. The final growth stage tops off the twin with...coating of lustrous black, coarsely crystalline romanèchite that covers all surfaces except those coated...coated with palygorskite. It is this romanèchite layer that so dramatically outlines the white palygorskite-coated...palygorskite outlined by a thin band of lustrous black romanèchite and topped by a fringe of beige-to-colorless |  | Leal, P. R., Correa, M. J., Ametrano, S. J., Etcheverry, R. O., de Brodtkorb, M. K. (2008) THE MANGANESE DEPOSITS OF THE PAMPEAN RANGES, ARGENTINA. The Canadian Mineralogist, 46 (5) 1215-1233 doi:10.3749/canmin.46.5.1215 | Journal (article/letter/editorial) | | oxides (hollandite, pyrolusite, ramsdellite, romanèchite and cryptomelane) associated with Fe3+ oxides...contenant Mn4+ (hollandite, pyrolusite, ramsdellite, romanèchite et cryptomélane) associés aux oxydes de Fe3+...of granodiorite, granite, tonalite, dacite and rhyolite. This igneous basement occupies nearly 8,000 km2...manganese mineralization studied in this paper. This district produced manganese from the early 1900s until...elements lead to the formation of cryptomelane (K), romanèchite (Ba), hollandite (Ba) and coronadite (Pb). In |  | | Journal (volume) | | Bridges 6-12 Unusual fluorite from Old Towns Quarry, Newton Aycliffe, Co. Durham Trevor F. Bridges...A new assemblage of manganese silicates in the Lower Cambrian manganese ore bed, Harlech, Merionethshire...Cotterell 39-51 Franklinphilite in veinlets in the Lower Cambrian manganese ore bed, Harlech, Merionethshire...Pennines, and the Caldbeck Fells in the northern Lake District were some of his most popular collecting areas...him participating in the activities of the Peak District Mines Historical Society (with his great friend |  | | Journal (article/letter/editorial) | | Mineralization Associated with the Boléo Cu-Co-Zn District, Mexico ANDREW G. CONLY,†,1 STEVEN D. SCOTT,2...within stratiform ore beds or mantos, the Boléo district of central Baja, Mexico, also contains significant...amounts of hollandite, cryptomelane, todorkite, romanèchite, pyrolusite, and X-ray amorphous Mn oxide. Chemically...water table. Introduction THE BOLÉO Cu-Co-Zn district, situated midway along the eastern side of the...percent Mn. In the northwestern region of the district, Mn grades and tonnages (0.3 Mt averaging 40% |  | | Book (chapter) | | dendriete = wad (pyrolusite ± manganite ± romanèchite ± cryptomelane), Macintosh 89 (1988). dendritachát...(1995). dendrites = wad (pyrolusite ± manganite ± romanèchite ± cryptomelane), MM 1, 85 (1877). dendritic agate...despujolsite, Chudoba EIV, 22 (1974). derb Brunsten = romanèchite, Dana 6th, 257 (1892). derbes Weissgold = tellurium...Maus 46 (1974). dichter Schwarz-Braunstein = romanèchite, Clark 180 (1993). dichter Serpentin = lizardite...dichtes grau-Braunstein-Erz = hausmannite + romanèchite, de Fourestier 94 (1999). dichtes Grauspiesglaserz |  | | Book | | MINERAL? 9 Volcanic rhyolite The Rhyolite Hills in Iceland are formed of rhyolite, a silica-rich rock...rock produced as a result of volcanic activity. Rhyolite is made up of crystals of high-silica minerals....in cubic miles on the surface of Earth. Marble quarry This dazzling white marble being quarried at Carrara...168). Deposits are found in Freiberg, Saxony, Germany; Lengenbach, Switzerland; and Butte, Montana, and...with good specimens coming from Freiburg, Saxony, Germany; Yakutia, Russia; Trepca, Serbia; Dachang, China; |  | | Book (chapter) | | albite, MM 12, 389 (1900). pantellerite = rock (rhyolite), Clark 523 (1993). pantera = banded quartz-mogánite...(1995). pelagite = wad (pyrolusite ± manganite ± romanèchite ± cryptomelane), MM 1, 52 (1876). pelagonite...202 (1892). peroxyde de manganèse potassé = romanèchite, Egleston 272 (1892). peroxyde métalloïde argentin...de périgueux = wad (pyrolusite ± manganite ± romanèchite ± cryptomelane), de Fourestier 272 (1999). pierre...dorata = quartz + wad (pyrolusite ± manganite ± romanèchite ± cryptomelane), LAP 26(10), 15 (2001). pietra |  | | Book (chapter) | | Leptonematit (Breithaupt) = romanèchite, Dana 7th I, 668 (1944). Leptonemerz = romanèchite, Dana 7th I, 668 (1944)...fluorite, Dana 6th, 161 (1892). Liparit (Roth) = rhyolite (rock), MM 22, 623 (1931). Li phengite = Li-Fe-rich... MM 30, 738 (1955). lithiaphorite = Li-rich romanèchite, Thrush 648 (1968). lithia-tourmaline = elbaite...Aballain et al. 208 (1968); MR 39, 133 (2008). lower high tridymite = high-temperature SiO2, Dana 7th |  | | Journal (article/letter/editorial) | | niversity Mainz, D-55099 Mainz, Becherweg 21, Germany a r t i c l e i n f o Article history: Received...combining the commodity (lines) shown by numbers plus lower caps with the host rocks or structure (columns)...“Gesellschaft für Metall-, Hütten- und Bergleute” in Germany (GDMB). These data have been reported in the final...fallen out of use, excluding uranium in modern-day Germany. Exploration does not place the main emphasis on...Richterite Riebeckite Rinkite Rodalquilarite Romanèchite Romeite Roquesite Roscoelite Roselite Rustenburgite | | | Journal (article/letter/editorial) | | niversity Mainz, D-55099 Mainz, Becherweg 21, Germany a r t i c l e i n f o Article history: Received...combining the commodity (lines) shown by numbers plus lower caps with the host rocks or structure (columns)...“Gesellschaft für Metall-, Hütten- und Bergleute” in Germany (GDMB). These data have been reported in the final...fallen out of use, excluding uranium in modern-day Germany. Exploration does not place the main emphasis on...Richterite Riebeckite Rinkite Rodalquilarite Romanèchite Romeite Roquesite Roscoelite Roselite Rustenburgite |  | | Book | | and Geology University of Würzburg Würzburg, Bavaria, Germany Hartwig E. Frimmel Institute of Geography...and Geology University of Würzburg Würzburg, Bavaria, Germany Department of Geological Sciences University...Control Number: 2018945875 © Springer-Verlag GmbH Germany, part of Springer Nature 2020 This work is subject...address is: Heidelberger Platz 3, 14197 Berlin, Germany V Preface Thirty-five years ago Siegfried Matthes... minerals or deposits happen to be located in Germany. Invariably there are numerous books on the topics |  | | Journal (article/letter/editorial) | | These fluids collect certain elements producing a district mineralogical specialization with inhomogeneities...orogenic cycles with a contribution of Pb from the lower crust and even the mantle. Fluid flow along fault...retrograde metamorphism during the ascent of the hot lower-plate rocks to shallower depths. Low temperature...may have been driven by heat derived from either lower-plate rocks or syntectonic magmatism. The aim of...(Derby, 2012). Examples of this type of deposit are District Artillery Park, Arizona, USA (Derby, 2012); Santa |  | | Journal (issue) | | England Peter S. Burr Ichoring 30A D-82057 Icking, Germany P_S.Burr@t-online.de J. George Wilson 21 Cromwell...of the English Lake District that is now within the borders of the Lake District National Park. The nearest...name, the valley carries a small stream in its lower reaches. At the eastern extremity of the mine (Ordnance...fault, mostly in the Drygill shales, but with rhyolite or dolerite on one 575 Figure 1. “The Mynes”...manganese oxides, predominantly pyrolusite and romanèchite. In places, the veins are mineralized with galena |  | | Book | | intermediate magma in a minor intrusion. SIMILAR ROCKS Rhyolite (p.56), dacite (p.59), and porphyry (p.60). Diorite...CONGLOMERATE IRONSTONE CLAY GRANITE MICROGRANITE RHYOLITE PARAGNEISS QUARTZITE SLATE SEDIMENTARY ROCKS...SIMILAR ROCKS Other sandstones (pp.23–27) have a lower proportion of quartz (p.143), and are darker coloured...base, fining upwards. It is especially abundant in Lower Palaeozoic rocks worldwide. grains of many different...microscopes. SHRINKAGE cracks can be seen in this quarry face of grey clay. limonite gives yellowish |  | | Book (chapter) | | pyrolusite or romanèchite, Dana 6th, 257 (1892). calvonlgrite = pyrolusite or romanèchite, de Fourestier...ciprusi umbra = wad (pyrolusite ± manganite ± romanèchite ± cryptomelane), László 49 (1995). ciquenita...cobaltomelane = cryptomelane + pyrolusite ± manganite ± romanèchite ± asbolane, AM 46, 767 (1961); 49, 223 (1964)...Fourestier 80 (1999). compact black manganese ore = romanèchite, Dana 6th, 257 (1892). compact fluor = fluorite...pyrites = chalcopyrite, Dana 6th, 80 (1892). copper rhyolite = cuprite, Sinkankas 80 (1972). copper ruby = |  | | Book | | himself wore a simpler version European state with Germany for his coronation in 800 CE. at its heart. Later...The crown is made in a workshop in the Lower Rhineland of Germany 1400 1424–1796 The crown and other imperial...other uses in industry. However, very small or lower-grade stones can be polished into gemstones rather...green diamond is named after its home in Dresden, Germany (see pp.140–41). It is famous for its extraordinary...Vitreous | Streak White | Locations Iceland, US, Germany, Czech Republic, Mexico Internal fracture Oval |  | | Journal (article/letter/editorial) | | Erlangen-Nuremberg, Schlossgarten 5, Erlangen 91054, Germany; cINGV Osservatorio Vesuviano, Via Diocleziano...located in the northernmost part of a wide mining district, the ‘Charlotte Bongará Zinc Project’, which covers...area of approximately 110 km2 in the Amazonas district (Northern Peru). The mineralised area consists...Lismore-Dungarvan syncline, which mostly consists of Lower Carboniferous carbonate units, bounded by a thick...in the UK. The 68 documented veins are hosted in Lower Palaeozoic strata and are dominantly concentrated |  | | Journal (issue) | | most work. After that, we used 100 and 200 grit at lower speeds, then sped up the wet polisher for the 400...using the trim saw, you have to remember that the lower edge of the blade cuts farther in than the top edge...sticky, yellow rhyolite clay that is underlain by a bed of massive, solid rhyolite. This rhyolite originated...and the ones at the contact with the underlying rhyolite tend to be hollow with banded agate rinds and...Revisited Ezmeralda Cooper digs through a pile of rhyolite looking for thunder eggs to place in the bucket |  | | Journal (article/letter/editorial) | | METAMORPHOSED Fe–Mn DEPOSITS, EASTERN SWISS ALPS Germany Ore deposits Austria France Switzerland 1:...and spessartine are absent. Fine needles of romanèchite occur along braunite grain-boundaries. The ore...their host rocks, the veins have similar Sr, but lower Ba contents (~300 ppm in the augen gneiss; Balzer...pumice layer is present) and Lower Ladinian, but occur also in the Lower and Middle Anisian as well as...Briançonnais terranes: Truzzo granite and Roffna rhyolite (eastern Penninic nappes, Swiss and Italian Alps) |  | | Book | | The bands at 3000 and 2485 cm−1 are shifted to lower wavenumbers (2440 and 1840 cm−1, respectively) in...metasomatic sanidine from Volkesfeld, Eifel Mts., Germany contains only traces of structurally bound hydrogen...are hypothetical mineral phases of the Earth’s lower mantle. Five types of OH groups in synthetic ilmenite-type...the narrow interval from 3330 to 3360 cm−1. At lower water concentrations (<0.4 wt%) the most abundant...structure), possibly plays an important role in the lower transition zone of the Earth’s mantle as a concentrator |  | | Book | | croissance parallèle cristal prismatique amiante Romanèchite, Psilomélane + D'après son gîte de Romanèche... la traction, sans perte de conductibilité.) rhyolite (p. 240) béryl rou Inclus dans des pegmatites...cassure conchoïdale Icaire massif finement grenu Rhyolite + Du grec ’ry6, tirer; ‘ryôdês, fluide. - Roche...feldspath |potassique >} Mineurs albite, biotite rhyolite, formation de couches litées couleur gris très...Roches analogues, bien plus grossièrement grenues. Rhyolite a quartz en élément majeur; téphrite a leucite |  | | Book (chapter) | | thunder egg = quartz-mogánite mixed-layer (sphere in rhyolite), Dana 7th III, 215 (1962). thunderous arrows...vermiculite, Robertson 36 (1954). tungomelane = W-rich romanèchite, MM 26, 343 (1943). tungpait = tongbaite, László |  | | Book | | éruptives ; exemple : le basalte, la phonolite, la rhyolite. La désagrégation des roches plutoniques libère...euxénite-Y, pyrochlore, pyrrhotites, psilomélane (= romanèchite), hollandite, gypse, calcite. Très rares : calcédoine... si on la connaît ; le nom du département, du district, de la région, de la rivière, du lac, etc ; le |  | | Book | | Târgoviște, Romania Eugen Crețu Terassond, Bad Bibra, Germany Daniela Dimofte “Emil Racoviță” Institute of Speleology...Geomorphology, University of Bayreuth, Bayreuth, Germany Philipp Häuselmann Swiss Speleological Society...(GESS), Bucharest, Romania Günther Karban Munich, Germany Cristian Lascu “Emil Racoviță” Institute of Speleology...Padeș, Fǎgǎraș). Cadomian type includes the Lotru lower unit of the Sebeș-Lotru Terrane. Drǎgșan and Lainici-Pǎiuș...Sebeș-Lotru Terrane has a composite structure with a lower unit (Lotru) and an upper unit (Cumpǎna) of late |  | | Book | | Barth 1899–1971 Francis J. Turner 1904–1985 Germany Denmark Detailed description of minerals Law of...Sweden France Germany Germany/Russia Sweden Germany Germany Germany France USA Russia Germany Austria Germany...Russia Germany Germany Finland Russia USA Switzerland Norway/Germany Great Britain Russia Germany Great...1967). (b) Crystal of halite (NaCl) from Fulda, Germany (courtesy O. Medenbach). The morphology displays...whole earth, magnesium is a major component of the lower mantle and iron dominates in the core, and the abundances |
|
