 | | Journal (article/letter/editorial) | | geochemical study of element mobility in sulfide mine tailings of Fe oxide Cu–Au deposits from the Punta...chalcopyrite. Gangue is dominantly calcite with minor quartz. The host silicate assemblage is largely controlled...F sericite F chlorite F tourmaline F epidote F quartz. In this study, both the Ojancos and the P. Cerda...potential (about 3 wt.% calcite and 4 wt.% pyrite). Acid mine drainage (AMD) with the precipitation of schwertmannite...ferric polymers or colloids in the form of neutral mine drainage (NMD). This would explain the metal enrichments |  | | Journal (article/letter/editorial) | | guide to later workers. Unpublished reports of many mine examinations made by Hector Flores W. and Ruiz during...30 per cent quartz. The maximum thickness of the Punta del Cobre Formation exposed in mine workings and...part of the formation, 1.5 km northwest of Teresita mine, contains Crioceras andinum Gerth and other... equigranular, rich in orthoclase, and poor in quartz. Soda trachyte which also intrudes the Cerrillos...porphyritic to coarsely equigranular. Most are in the quartz monzonitegranodiorite-diorite compositional range; |  | | Journal (article/letter/editorial) | | silicates were used: 1. Andalusite from Santa Teresita Mine, Espirito Santo, Brasil, containing 0.40 wt...and Schreyer (1970): chlorite ~ Al-sflieate -~ quartz ---- eordierite ~- H20 (1) in the pressure range...pointed out by Seifert and Schreyer (1970) that in a quartz-bearing rock the assemblage chlorite -~ sillimanite...neglected for the sake of simplicity. Abbreviations: Q quartz, Cord cordierite, Chl chlorite, And andalusite |  | | Journal (article/letter/editorial) | | andis alsofoundin smallveinsconsisting chiefly of quartz and molybdenite,scatteredthroughoutthe lengthof...pyritegenerally is theearliestoi the sulfideminerals. Quartz,themostabundantgangnemineral,is not shown because...parageneticdiagramfor the samereason,althoughin contrastto quartz,calcite generally didnotformduringtheearliestpartof...consistsprincipallyof magnetitepartly alteredto hematite,and quartz. Highest gradeore rangesfrom 30 to 40% Fe. Copper...longestdimensionand extendto depthsof as much as 200 m. Quartz and coarselycrystallinetourmalinecementand partly |  | | Show/Event (guide) | | 501-984-4165 138 | JOGS SHOW Booth#: T100 Arkansas quartz, unique crystals, turquoise. List of Exhibitors...Aquamarine, tourmaline, tanzanite, amethyst, citrine, quartz, morganite. BnB crafTS inc. 14044 Garfield Ave...com Booth#: E411 Loose cut sapphires from single mine in Montana, sapphire rough materials, sapphire jewelry...crystals, arrowheads, fashion jewelry, crystal quartz, semiprecious stones, sterling silver jewelry ...Madrid, Madrid 28012 Spain Tel: 34615261973 www.jadminer.com Booth#: T2, T4, T6 Quartz, silver with holistic |  | | Journal (article/letter/editorial) | | ; the secondsubstage containstetrahedrite.This quartz stageis in turn succeededby the bonanzastage,which...precious metal valuesof the Calera system.Late quartz and sphalerite+ galenaveinswith barite, marcasite...shoot;the Mn stageis better developedat depth andthe quartz stageis dominantin upperlevels.The Au-richoresof...abundantrhodoniteis replacedby rhodochrosite andeventuallyby quartz as the dominantganguemineral.The basemetalsulf...AndahuaValley, a largeasymmetric Formation.Within the Calera mine, a thick sequence grabenthat boundsthe districton |  | | Report (issue) | | interbedded with basalts and intruded by small bodies of quartz latite porphyry* The terrane reflects recent glaciatloa...below 250° C. The colloidal habits of pyrite and quartz in the preparatory and reworking stages imply relatively...Castrovirreyna district 186 Table IV Mine production and grade of ore, Carmen mine, 1941-1958 . 188 Table V...production, Caudalosa mine, 1927-1957 189 Table VI Mine production and grade of ore, Lira mine, 1941-1958 190...190 Table VII Metal production, San Genaro mine, 1928-1955 191 Table VIII X-ray powder diffraction |  | | Journal (issue) | | occurrences 46 Cerro Pelado area 46 Loma Larga mine 48 Manganese mine 48 Sacachispas gold mining area 48 Alluvial...Non-metallic mineral occurrences 48 Jerusalein feldspar mine 48 Quarrying operations 49 Brick clays 49 Sand and...Irregular pegmatitic apophysis, comprising feldspar, quartz, biotite, muscovite and tourmaline, La Bocana unit...Tahuin division, north of Las Lajas 40 23 Boudinaged quartz veins indicating dextral movement, low-grade portion...gold-bearing quartz veins/stringers occur in Estero Sacachispas; metre-s cale rhodonite bearing quartz lenses |  | | Journal (article/letter/editorial) | | pyrite-chalcopyrite-sphalerite deposits, syngenetic with the quartz porphyries of the Belt Series, were known long...Paleozoic Sambagawa schists; and the Huelva province in Spain ( Rio Tinto). Cimmerian pyritic deposits are known...Miocene propylitized granodioriteporphyries and quartz diorites (Geologic Structure of the USSR, 1968)...Salado and La Pataucha deposits in Aconcagua, Teresita and Frankenstein in Atacama, and Porosuelo and...e ores are known in Aysen Province ( Las Chivas mine). FIGURE 6. Map of distribution of chalcopyrite |  | | Show/Event (guide) | | S403, S405, S407 Cabachons, beads, amethysts, quartz specimens, agate, polished lapis and ethnic jewelry...Aquamarine, tourmaline, tanzanite, amethyst, citrine, quartz, morganite. BNB CRAFTS INC. 14044 Garfield Ave...silver jewelry. DREAMGLASS Ghilardi 597, ol. Santa Teresita Guadalajara, Jalisco 44600 Mexico Tel: +5-233-334-4212... Booth#: E411 Loose cut sapphires from a single mine in Montana. Sapphire rough materials and sapphire...piritasdenavajun.us Booth#: Tent G-5 Top quality pyrite from Spain, minerals, and fossils. LEO SILVER BALI Jalan Batuyang |  | Gibson, Peter Craig, Noble, Donald C., Benavides, Raúl G., Mayta, Oscar T. (1993) Discovery, Development, and Production of a Blind Ag-Au Bonanza in the Calera Vein, Orcopampa District, Peru. International Geology Review, 35 (9) 780-796 doi:10.1080/00206819309465557 | Journal (article/letter/editorial) | | (1975), and unpublished mapping by the Orcopampa mine staff and K. E. Swanson. Manto Tuff is locally...length, hornblende, biotite, and variable amounts of quartz. Although lavas of the Sarpane volcanics were erupted...banded and massive gangue composed principally of quartz, rhodonite, and rhodochrosite. The volcanic rocks...vein showing development of the main ore shoot. The mine workings are projected to a vertical plane with...1988; D=January, 1992. E=June, 1993. Numbers are mine levels that represent approximate elevations. Qal |  | | Journal (issue) | | Twenty-six, Number Two Articles Amethyst on milky quartz from Hopkinton, Rhode I s la n d by J. Rakovan...Miguel Calvo (who covers the two major shows in Spain), under Letter from Europe. George Robinson and...occurrence o f amethyst scepter overgrowths on milky quartz was discovered in Ashaway Village, Hopkinton, Rhode...These specimens were collected from subsurface quartz veins after removal of 1 to 3 meters of overburden...epitaxial amethyst overgrowths on euhedral milky quartz stems results from distinct changes in the physiochemistry |  | | Report (issue) | | of western cont~rminous United States 183. The quartz diorite line in northwestern North America, by...Willden __________ _ 193. Geology of the ~ount Wheeler mine area, White Pine County, Nevada, by Donald H. Whitebread..._ 229. Facies change in Neocomian rocks of the Teresita-Chula area, Atacama Province, Chile, by Kenneth...stress distribution around coal mine workings in Sunnyside No. 1 mine, Utah, by Frank W. Osterwald---...Shasta Bally batholith of leucocratic granitoid quartz diorite and granodiorite, and by dikes and sills |  | | Journal (article/letter/editorial) | | prospects. Chalcopyrite, and minor bornite, occurs in quartz–calcite–(adularia) veins in the Kingston deposit...accompanied by chalcopyrite, galena, and sphalerite in quartz–pyrite veins that also have a Ag–As–Hg–Te signature...recorded from previous fluid inclusion studies of quartz at the Banana Creek Au prospect (~260 ◦ C) and...potassium feldspar, augite, and biotite with minor quartz, carbonate, coarse-grained plagioclase, potassium...potassium feldspar, augite, and biotite with minor quartz, carbonate, epidote, epidote,iron ironoxides, oxides | | | Journal (issue) | | Twenty-six, Number Two Articles Amethyst on milky quartz from Hopkinton, Rhode Island by J. Rnkovn11, D...Miguel Calvo (who covers the two major shows in Spain). under Leller from Europe. George Robinson and...•olumr 26. Murrh-Apnl. /99.'i AMETHYST O N MI LKY QUARTZ FRO M HO PKINT ON, RH O D E ISLAND John Rakovan...These specimens were collected from subsurface quartz veins after removal of I to 3 meters of overburden...epitaxial amethyst overgrowths on euhedral milky quartz stems results from distinct changes in the physiochemistry |  | | Journal (article/letter/editorial) | | deposit, and the age coincides with zircon ages of a quartz diorite stock that partially hosts mineralization...magnetite-apatite mineralization and the dioritic-quartz dioritic magmatism, strongly suggests a genetic... The main components of the pluton complex are quartz monzodiorites and pyroxene, and amphibole and biotite...N-S for ⬃ 50 km; it is mainly granodioritic and quartz dioritic in composition. North of the studied area...Aspera is an equidimensional pluton. It is mainly quartz dioritic in composition, and the volcanic country |  | | Journal (article/letter/editorial) | | displacement of 1200 m near Las Torres mine and of 1700 m at the Valenciana Mine. The Veta Madre vein was discovered...the mineralization is 27.4 Ma (Gross, 1975). The quartz veins with Ag-Au, are associated with hydrothermal...(K-Ar = 112 Ma, Lapierre et al., 1992), dioritic, quartz-dioritic and/or tonalitic host rocks; A pluton...in a medium to coarse grained matrix composed by quartz, plagioclase (albite-oligoclase) and biotite (Quintero-Legorreta...(structureless) ash-flow tuff, up to 350 m thick with quartz (< 25 vol%), sanidine and minor plagioclase 507 |  | | Journal (issue) | | crystals on matrix, 17.2 cm, from the N’Chwaning I mine, collected in 1978. Private collection and photographer...Show and Riverpark Inn Rhodochrosite, Sweet Home Mine, USA, 10 cm Photo: Malte Sickinger MARCUS BUDIL...budil-minerals.com Chrysocolla on Malachite Mashamba West Mine Democratic Republic of Congo 26 cm - Joe Budd Photo...mineral shows worldwide! Rhodochrosite - Sweet Home Mine, Colorado - 13cm | Brazilianite - Minas Gerais,...from the Hotazel mine emerged onto the international market. The N’Chwaning I mine, opened in 1972, yielded |  | | Catalog/List | | Some of his favorite memories are of collecting quartz in Montana, calcite in Utah, silver, galena, sphalerite...this Che Kevin Ward Minera! on QUARTZ RHODOCHROSITE District Mine. Climax Climax olTolg-Yole Lake....is a good that met every sized one plate of quartz of those qualities Cry stals w th large This...definately do not detract those and of speak to points quartz incomplete of scattering a is in excellent condition...years to find a specimen rhombs rhombs Climax Mine, ot rhodochrosite $50 OOU 60.000 Ex The |  | | Journal (article/letter/editorial) | | University, Pullman, Washington 99164-2812 AND TERESITA F. MONTENEGRO CONICET, Universidad Nacional de...prograde skarn alteration to late crosscutting quartz veins, documents relationships at Caicayén between...by a series of Paleocene tonalite, diorite, and quartz diorite stocks, dikes, and sills, which are part...have been intruded by two fine- to mediumgrained quartz diorite to tonalite stocks (Collipilli Formation;...associated porphyritic sills (175–300 m thick) of quartz diorite and diorite that crop out to the south |  | | Journal (issue) | | Tampa, FL Correspondents Miguel Calvo Zaragoza, Spain Michael P. Cooper Nottingham, England Thomas P....ecord Articles Rare sulfosalts from the Van Silver mine, British C olum bia...............................Balacko Famous mineral localities: The Brownley Hill mine, Alston Moor, Cumbria, England....................COVER: ATACAMITE in GYPSUM, 6.8 cm, from the Lily mine, lea, Peru. Irv Brown collection; Jeff Scovil photo...British Columbia the Silver Tunnel o f the Van Silver mine has produced hundreds o f rare and beautiful crystal |  | Aiglsperger, Thomas, Proenza, Joaquin A., Lewis, John F., Labrador, Manuel, Svojtka, Martin, Rojas-Purón, Arturo, Longo, Francisco, Ďurišová, Jana (2016) Critical metals (REE, Sc, PGE) in Ni laterites from Cuba and the Dominican Republic. Ore Geology Reviews, 73. 127-147 doi:10.1016/j.oregeorev.2015.10.010 | Journal (article/letter/editorial) | | s/n, SC R a IP Ďurišová c 08028 Barcelona, Spain *Corresponding autor, e-mail: thomas.aiglsperger@ub...instabilities can occur when producers suffer full-scale mine shutdowns as seen during several strikes held by...Camarioca Sur, La Delta, Cantarrana, and Santa Teresita (e.g. Lavaut, 1998) producing at least 34.263...been divided into various zones and subzones by mine workers and Cuban geologists but the nomenclature...2013; SC R Villanova de Benavent et al., 2014). Mine geologists of Falcondo have subdivided and named |  | | Journal (issue) | | except the Dale Beck Valley, Dry Gill and Carrock End Mine. Grahamis hoping to get the permit system properly...minerals associated with ironstones, such as siderite, quartz, millerite, galena, sphalerite, siegenite, ankerite...still very much a 'frontier place'. One supposed mine was started by a character called Otto van Stryk...Stryk who thought he had found a huge iron mine. Alas, he never got any useable ore out of it. Rick went...recognised the tell tale signs of black to greasy brown quartz, in which the crystal structure is destroyed by |  | | Journal (article/letter/editorial) | | Chile. This belt includes the large Candelaria mine and a group of middle- and small-sized mines in...of magmatic origin. Anhydrite from the Candelaria mine paragenetically overlaps with chalcopyrite. Fluid...25° 70° 69° 70˚15' W b) Atacama Fault Zone Teresita Copiapó N Taltal Providencia Prospect Manto...Q. Paipote Ru ta Closed mine Carmen Chañeral 5-P an am eri ca na Mine in operation 26° Mantos...Selected Mineral Deposits of the Punta del Cobre Belt Mine Alcaparrosa Bronce Candelaria Carola Lar Las Pintadas |  | | Journal (issue) | | Tampa, FL Correspondents Miguel Calvo Zaragoza. Spain Michael P. Cooper Nottingham, England Thomas P.... 191 by W. E. Wilson U n u su a lly sh a p e d quartz aggregates from T irniauz, R u ssia ............. COVER: BOURNON1TE crystals on quartz, 8 cm, from the Herodsfoot mine, Liskeard, Cornwall. Stephen Smale...r specimens in the future. INTRODUCTION Boulby mine is situated in the county o f Cleveland on the northeast...is sold for agricultural use, in fertilizers. The mine has recently been reported in mineralogical journals |
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