 | | Catalog/List | | 94403 U.S.A. Old No. l Headfnme. Whi ■ key Hlll Mine, Tuohnne County, CaUfomla (r■-,u. .SV•t- tor cr11•t•J...association. Few of the minute crystals you see on mine or quarry dumps or even on cabinet specimens will...dumps or surface float. Mirute crystals seen on a mine dump are a clue but nearly always tao weathered...'hite hairs on feldspar. 784 ADAMITE, Moha\'.1k Mine, San Bernardino County, r.alifornia. Group o f colorless...crystals on matrix. 632 AOOLARIA, Tavetsch, Switzerland. Transparent typical crystals on matrix. 910 |  | | Catalog/List | | 5x2x5/8", £8.75 A/4. ADAMITE. Kameriza Central Mine, Laurium, Attica, Greece. A sparkling lime-green... £24.00 ADULARIA/CHLORITE. St Gothard, Ticino, Switzerland. A matrix-free penetrant association of A/6...ADULARIA/SPHENE/EPIDOTE/CHLORITE/ALBITE. St Gothard. Ticino, Switzerland. Excellent example of alpine assemblage....3. ANATASE/ADULARIA. Cavagnoli-Glacier, Ticino, Switzerland. A Lustrous, pearly interform of sharp, pseudo-rhombic...5x2x1", £10.00 6. ANDRADITE GARNET. Belstone Consols Mine, Sticklepath, Devonshire. A vitreous brownishgreen |  | | Journal (issue) | | Heidelberg, W. Germany Eric Offermann Arlesheim, Switzerland Jeffrey A. Scovil Phoenix, AZ Harold and Erica...Toronto Technical College. He learned that the Tsumeb mine in South-West Africa was producing some very beautiful...the miners was nothing new at Tsumeb; they would mine around crystal pockets until lunchtime, then go...fill their oversized lunch boxes with specimens. Mine management looked the other way as long as operations...catalog of fine minerals on DVD Mimetite, Pingtuoling mine, China. Jeff Scovil photo. The Jackson’s Crossroads |  | Berni, Gabriel V., Heinrich, Christoph A., Lobato, Lydia M., Wall, Vic (2016) Ore mineralogy of the Serra Pelada Au-Pd-Pt deposit, Carajás, Brazil and implications for ore-forming processes. Mineralium Deposita, 51 (6) 781-795 doi:10.1007/s00126-015-0635-7 | Journal (article/letter/editorial) | | Clausiusstrasse, 25, NW F 82.1, 8092 Zürich, Switzerland 2 Faculty of Mathematics and Natural Sciences...University of Zürich, Zürich, Switzerland 3 Centro de Pesquisa Manoel Teixeira da Costa, Universidade Federal...matter. The main accessory minerals are monazite, rutile, hematite, florencite ((La,Ce)Al3(PO4)2(OH)6),...hematite, monazite and rutile. d Back-scattered image showing a large rutile crystal with inclusions...the carbon-rich matrix. Mineral abbreviations: Rt rutile, Mnz monazite, Hem hematite, Brt barite, Kln kaolinite |  | Pilet, S., Abe, N., Rochat, L., Kaczmarek, M.-A., Hirano, N., Machida, S., Buchs, D. M., Baumgartner, P. O., Müntener, O. (2016) Pre-subduction metasomatic enrichment of the oceanic lithosphere induced by plate flexure. Nature Geoscience, 9 (12) 898-903 doi:10.1038/ngeo2825 | Journal (article/letter/editorial) | | Sunda trenches18 , or as an accreted petit-spot in Costa Rica19 , suggesting that petit-spot volcanism is...Sciences, University of Lausanne, 1015 Lausanne, Switzerland. 2 R&D Center for Ocean Drilling Science, Japan...interpreted as an accreted petit-spot in northern Costa Rica19 . These ∼175-Myr-old sills interlayered with...supporting similar petrogenetic processes19 . The Costa Rica petit-spot sills were not necessarily associated...early stages of the Pacific Plate formation19 . Costa Rica sills are porphyric, and host large-zoned cpx |  | ANGIBOUST, S., LANGDON, R., AGARD, P., WATERS, D., CHOPIN, C. (2012) Eclogitization of the Monviso ophiolite (W. Alps) and implications on subduction dynamics. Journal of Metamorphic Geology, 30 (1) 37-61 doi:10.1111/j.1525-1314.2011.00951.x | Journal (article/letter/editorial) | | 350 km, from Voltri (Italy) to Zermatt-Saas (Switzerland; 2011 Blackwell Publishing Ltd MONVISO ECLOGITES...ÔclassicalÕ cross-section (namely the Vallanta and Costa Ticino units in Lombardo et al., 1978; Fig. 2b) correspond...metamorphism, is separated from the underlying Costa Ticino unit by a tectonic contact. This latter unit...tectonic subunits are: VU (Vallanta Unit), CT (Costa Ticino unit), VM-LS (Viso Mozzo, Lago Superiore units)...Occasionally, smaller amounts of paragonite, zoisite, rutile, tourmaline and apatite have been observed in the |  | | Journal (article/letter/editorial) | | bauxite-bearing regolith occurrence in the ALCOA bauxite mine at Juruti/Brazil was studied. The different minerals... X-ray amorphous contents were determined with rutile added as standard crystalline phase and related...operation, as at Trombetas, Juruti and Paragominas (Costa et al., 2014) with others being researched such...banks of the Amazon River. Within the Juruti’s ALCOA mine district, a bauxite-bearing regolith is exposed...rocks of the Cretaceous Alter-do-Chão formation (Costa et al., 2014), representing the deposition of continental |  | | Journal (issue) | | veins in (Continues on page 2) .. Magnet Cove Rutile Sixlings and Eightlings Art Smith artsmithite @msn...intrusive ring-dike complex are the eightling twins of rutile that may reach a size of over 2 cm across. Those...probably the most significant is the fact that most rutile occurs in the topographically low interior of the...died.in November 1891. Unfortunately the pages on rutile seem to ;uffer from these unfortunate events. Williams'...When you want to see what a Magnet Cove cyclic rutile twin looks like you open Williams ( 1891) to figures |  | | Journal (issue) | | . . . . . . . . . 19 by J. A. Scovil The Machow mine, Tamobrzeg, Poland . . . . . . . . . . . .. .. ...after argentite, 10 cm tall, from the Las Chispas mine, Arizpe, Sonora, Mexico. Houston Museum of Natural...geologic setting and mineralogy of the mine site. The Harding mine catalog will provide researchers and...citations on the Harding mine and information about other collections of Harding mine specimens. The museum...high-quality, precisely located specimens from the mine. Interested persons should send helpful information |  | | Journal (article/letter/editorial) | | 8952 Schlieren, Switzerland 2 Office of Planning ETH Zentrum CH-8092 Zurich, Switzerland 3 Institute for...Physical Chemistry, ETH Zurich, 8092 Zurich, Switzerland (Received October 8, 1998; accepted in revised...of the Rincón de la Vieja volcano in Northwest Costa Rica exhibits an argillic alteration system formed...G. Weidler Fig. 1. Geographic map of northern Costa Rica and the sampling site at the southern slope...system. A mudpool of the geothermal site in northern Costa Rica described by Giggenbach and Corrales (1992) |  | | Journal (article/letter/editorial) | | 283±297 Ó Springer-Verlag 1998 ARTICLE M. L. da Costa á E. L. Moraes Mineralogy, geochemistry and genesis...(30%), CIS Editorial handling: D.J. Morgan M.L. da Costa (&) á E.L. Moraes Centro de GeocieÃncias, Universidade...at Morro do Felipe, was the ®rst combined kaolin mine and processing factory in the Amazon region. In...production of approximately 500 000 tons in 1996. The RCC mine is located close to the PPSA operation, but on the...unique solutions to the problems of developing a mine in a 284 Fig. 1 Location of the investigated |  | | Report (issue) | | largely concentrated in such titanium minerals as rutile, ilmenite, perovskite, and sphene. Analyses of...channels in the lower bauxite bed in the Fletcher mine of Reynolds Mining Corp. in the W~SEiSWi sec. 11...granitic-textured bauxite from a weathered outcrop in the Pruden mine, Alcoa Mining Co., NEtSWi sec. 16,. T. 2 S., R....from mining face in the west part of the Section 16 mine, Alcoa Mining Co., SEiSWi sec. 16, T. 2 S., R. 14...ore") block from along company road in Middle Maud mine, Alcoa Mining Co., in SWiSEt sec. 22, T. 2 S., R |  | Costa, Mariana, Moura, Helena, Pinto de Jesus, Ary, Suárez-Ruiz, Isabel, Flores, Deolinda (2022) Effects of Magmatic Fluids in Coals of São Pedro da Cova Coalfield, Douro Carboniferous Basin, Portugal: Insights from Inorganic Geochemistry. Minerals, 12 (2) 275 doi:10.3390/min12020275 | Journal (article/letter/editorial) | | Portugal: Insights from Inorganic Geochemistry Mariana Costa 1 , Helena Moura 2,† , Ary Pinto de Jesus 1 , Isabel...2, * 1 2 3 * † Citation: Costa, M.; Moura, H.; Pinto de Jesus, A.; Suárez-Ruiz...© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed...firstly reported by Moura et al. [37] and then by Costa et al. [38] based on geochemical data. The minerals...from ref. [5], Copyright 2019 Springer Nature Switzerland AG). (modified with permission from ref. [5] |  | | Journal (issue) | | Pyromorphite from the Bunker Hill mine, Idaho; Wulfenite from the Red Cloud mine, Arizona; Calcite and Fluorite...Fluorite from the Elmwood mine, Tennessee; Aquamarine from Pakistan; Wire Silver from Kongsberg, Norway;...in Calcite from the Tsumeb mine, Namibia; Novacekite from the Brumado mine, Brazil; Elbaite from Nuristan...from Mogok, Burma; and Emerald from the Coscuez mine, Colombia. OUTSIDE BACK COVER: Beryl crystals: heliodor...aquamarine (right), 5.1 inches, from the Pioniera mine, Minas Gerais, Brazil; Freilich Collection. ♦ 4 |  | | Journal (issue) | | from what use to be an almost oval pit. Fig. 1 Rutile (1 mm) on orthoclase, Jones Mill Quarry, Magnet...Hill Drive. It is a scarp Continued on page 4 2 Mine ral News Review: Dinosaurs under the Big Sky By...they appear to be much less common than nodules, Mine ral Ne ws Nm ·<' mbr r 200 I Fig. 2 Cuts made...September Mine Calcite, chalcopyrite, galena, quartz, sphalerite, etc. Krushov dol Mine Calcite, chalcopyrite...sphalerite Ianakiev Mine Chalcopyrite, galena, quartz, sphalerite, etc. Borieva Mine Galena (twins) |  | Corral, Isaac, Cardellach, Esteve, Corbella, Mercè, Canals, Àngels, Gómez-Gras, David, Griera, Albert, Cosca, Michael A. (2016) Cerro Quema (Azuero Peninsula, Panama): Geology, Alteration, Mineralization, and Geochronology of a Volcanic Dome-Hosted High-Sulfidation Au-Cu Deposit. Economic Geology, 111 (2) 287-310 doi:10.2113/econgeo.111.2.287 | Journal (article/letter/editorial) | | minerals include alunite, kaolinite-dickite, and A Costa Rica Caribbean Plate Panama Cocos Plate Panama...700 º 80º 31.0’ Vuggy quartz; quartz, barite, rutile and residual pyrite Fresh rock; hydrothermally...rock Vuggy quartz fallen blocks; quartz, barite, rutile and residual pyrite Advanced argillic; quartz...grains, disseminated pyrite, barite, and minor rutile, with traces of sphalerite. At depth, vuggy quartz...plagioclase (Figs. 6B, 7B). Drusy quartz, pyrite, and rutile have partially filled some void spaces. Quartz |  | | Journal (article/letter/editorial) | | © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed...and southern (N4WS) segments of the N4W iron ore mine in Carajás. Although all were analyzed, only three...0870–9.2710) c-9.4690 (9.3740–9.5640) Rutile Bruker, rutile ICDD 211276 COD 2011 9007531 Restori et...Nonstoichiometric magnetite Titanite Goethite-(Al) Rutile Substitutions (mol) Fe3+ hematite Al3+ hematite...that of maghemite (χ = 0.052, 0.049, and 0.062), in mine N4WS its oxidation state is closer to that of magnetite |  | | Journal (article/letter/editorial) | | for Nuclear Research (CERN), CH-1211 Geneva, Switzerland Institute for Materials Science and Center for...1. Introduction Stannic oxides crystalize in a rutile structure with a tetragonal lattice of space group...that suggest the SnO2 followed a characteristic rutile crystalline structure without other detectable...863–868. [CrossRef] Ramos, J.M.; Carbonari, A.W.; Costa, M.S.; Saxena, R.N. Electric quadrupole interactions...[CrossRef] Ramos, J.M.; Martucci, T.; Carbonari, A.W.; Costa, M.S.; Saxena, R.N.; Vianden, R. Electric field |  | Sessa, G., Moroni, M., Tumiati, S., Caruso, S., Fiorentini, M.L. (2017) Ni-Fe-Cu-PGE ore deposition driven by metasomatic fluids and melt-rock reactions in the deep crust: The ultramafic pipe of Valmaggia, Ivrea-Verbano, Italy. Ore Geology Reviews, 90. 485-509 doi:10.1016/j.oregeorev.2017.05.028 | Journal (article/letter/editorial) | | ultramafic pipe of Valmaggia, Ivrea-Verbano, Italy G. Sessa, M. Moroni, S. Tumiati, S. Caruso, M.L. Fiorentini...2017 25 May 2017 Please cite this article as: G. Sessa, M. Moroni, S. Tumiati, S. Caruso, M.L. Fiorentini...ultramafic pipe of Valmaggia, Ivrea-Verbano, Italy Sessa G.1, Moroni M.1, Tumiati S.1, Caruso S.2, Fiorentini...levels in the historical, abandoned Valmaggia nickel mine. The exposures allowed access to fresh rocks and...accompanied by ubiquitous but accessory Fe-Ti oxides (rutile, ilmenite, magnetite), apatite, zircon, rare baddeleyite |  | Giovannini, Arthur L., Bastos Neto, Artur C., Porto, Claudio G., Pereira, Vitor P., Takehara, Lucy, Barbanson, Luc, Bastos, Pedro H.S. (2017) Mineralogy and geochemistry of laterites from the Morro dos Seis Lagos Nb (Ti, REE) deposit (Amazonas, Brazil) Ore Geology Reviews, 88. 461-480 doi:10.1016/j.oregeorev.2017.05.008 | Journal (article/letter/editorial) | | for the Mn. The main Nb ore mineral is Nb-rich rutile (with 11.26 – 22.23 wt.% Nb2O5), which occurs in...intense. Minor Nb-rich brookite formed from Nb-rich rutile occurs as broken spherules with an “oolitic” (or...(or Liesegang ring structure). Nbrich rutile and Nb-rich brookite incorporate Nb following the [Fe3+ +...rise to landforms called “iron-hat” (Angélica and Costa, 1993). In this work we use the term laterite, which...Carajás region (Porto, 2010; Costa, 1997) and elsewhere in the Amazon (Costa et al, 1993). 2.2 Previous |  | | Journal (article/letter/editorial) | | Oregon 97403, U.S.A. Abstract Finely acicular rutile intergrown with host quartz (rutilated quartz)...Samples were cut and mounted in epoxy disks to expose rutile (∼30 to 1400 µm in diameter) and its host quartz...backscattered electron (BSE) imaging of host quartz and rutile inclusions, respectively, shows internal zonations...spectrometry (SIMS) oxygen isotopic analysis protocols for rutile were combined with those established for trace...Zr) and U-Pb ages in rutile, and Ti abundances in the host quartz. U-Pb rutile ages average 15.1 ± 1 |  | | Journal (issue) | | Lengenbach Mineral Locality, Binna Valley, Valais, Switzerland................................................Imhof Famous Mineral Localities: Lengenbach, Switzerland 275 by Stefan Graeser Rare Earth Minerals in...Symes and P. G. Embrey Fluorite from the Font Sante Mine, Esterel, Var, France.............................Bochum-Querenburg, West Germany Eric Offermann Arlesheim, Switzerland photomicrography: Julius Weber Mamaroneck, New...KELLER-WILDI, W yhlenweg 40 CH 4 1 2 6 Bettingen, Switzerland ★ Cabinet specimens ★ Miniatures ★ Thumbnails |  | | Journal (article/letter/editorial) | | depletions, but only if the dehydrating crust is rutile-saturated. Slab control over HFSE depletions is...generation are thought to be minimal, as in central Costa Rica. In some other subduction zones, slab control...oceanic crust with residual rutile. A hemipelagic sediment melt and rutile-saturated £uid from altered...Calculated assuming 5 wt% £uid fraction from an rutile-bearing eclogite (cpx:gt = 49:49:2) and the mineral^aqueous...observed in central Nicaraguan basalts, but only if rutile is a residual phase during dehydration (Fig. 5b) |  | | Journal (issue) | | ·'limonite" pseudomorphs after pyrite, and small rutile crystals. About 200 quartz crystals were excavated...MINERAL MINERAL SHOW Holiday Inn - Bristol Plaza, COSTA MESA, CA 4 Locations in TUCSON - & AUGUST 8 -...GEM MINERAL SHOW Holiday Inn - Bristol Plaza, COSTA MESA, CA ~- ..-~~~..I'1 ,oCNWAf itiun & Holiday...not be reliable, for information about from which mine they came. Most will have forgotten but often will...erroneous detailed location data. The Sweet Surrender mine near Story is located near the northwest end of |  | | Journal (article/letter/editorial) | | SEELIG1, INGRID STOBER2 1 IGP, UNIL, Lausanne, Switzerland (David.Buchs@unil.ch; Peter.Baumgartner@unil...southwestern margin of the CP occur along the margins of Costa Rica and Panama. The sections reveal a complex history...one of these sections, outcropping in southern Costa Rica. The GC comprises lava flows and minor amounts...granite is converted to chlorite, hematite and rutile. The reaction buffers Mg to very low values. The |
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