 | | Journal (article/letter/editorial) | | THE CHICOTE TUNGSTEN FEDERICO DEPOSIT, BOLIVIA. AHLFELD. ABSTRACT. The Chicotedistrict, situatedin...The shalesof the roof are alteredextensivelyto a quartz-tourmaline rock.• Within an area of approximately4...hypothermal. The vein structure is massiveto vuggy. Quartz is the principal gangue mineral. The only tungstenmineral...geologictimes large massesof the vein zone slid into the Ayopaya valley forming a brecciatedtalus containing a large...by the authorof nearly every tungstendepositof Bolivia* showedthat the wolframitedeposits belongto a well |  | | Report (issue) | | No. 12: Bolivia ht of Mineral Collecting N 978-0-9790998-5-4 Publisher Lithographie, LLC Denver, Colorado...specimen 'being sold with the shrine when he was in Bolivia buying mineral specimens in the 1970s. He took...ophyllite; 5. 2 cm tall Cerro Rico, Potosi, B,atillo province, Potosi Andy Seibel col/action Jejf-SC,m/.plwto...wp11�. Yaalte: 12.5 cm wide Siglo XX Mine, ,U� Bustillo province, Potosi Malty Zinn colkdknt (ex Marv...640 200 100 600 The Political Divisions of Bolivia (after United Nations Map No. 3875, Peacekeeping |  | | Journal (article/letter/editorial) | | crystals has long intrigued me. Why, for example, does quartz appear in Japan-law twins in abundance at some...Ica, La Libertad, and Pasco departments; and in Bolivia at the Llallagua tin mines, where twins are often...and from several ferberite mines, including Kami in Cochabamba Department, Chicote Grande in La Paz Department...Japan-law twin centered among non-Japan-law twinned quartz crystals, 29 cm wide, from Pampa Blanca, Castrovirreyna...Japan-law twins are occasionally found in some of the quartz crystal mines in Arkansas, but why are they so |  | | Journal (issue) | | Articles Famous mineral localities: The Bristol copper mine, Connecticut...................................... Mandarino COVER: BORNITE crystal, 1.6 cm, on quartz , from Dzezkazgan, Kazakhstan. Houston Museum of...in the U.S.A. notesfrom th r EDITORS OLD YUMA MINE Another great mineral locality has now been closed...longfamous Old Yuma mine near Tucson (see R. L. Jones, “Famous mineral localities: the Old Yuma mine,” in vol....period of activity, access to the mine was cut off in 1984. In 1996 the mine area was absorbed into the Saguaro |  | | Journal (issue) | | January 1998 ISSN: 1355-4565 Turquoise from Hubei Province, China Qi Lijian, FGA, DGA, Yan Weixuan, FGA,...The turquoise deposit in Yunyang district, Hubei Province, China, is characterized by its large scale, complex...secondary leaching Introduction unyang in Hubei Province, located in the eastern section of the Qinling...Neolithic Age, located in Yongjing County, Gansu Province, China. This indicates a mining history of about...siliceous slates, carbonaceous mica quartz rocks, calcareous mica quartz-schists and carbonaceous clay marbles |  | | Journal (article/letter/editorial) | | Metallogenetic Epochs and Provinces of Bolivia The Tin-Province (Part I) The Metallogenetic Provinces...Provinces of the Altiplano (Part II) F. A~LFELD Cochabamba, Bolivia Partf. An attempt is made to solve the relationships...formation of ore deposits using the Bolivian tin-province as an example. In the eastern Cordillera we are...tin-silver mineralization is discussed. Within the tin-province three metallogenic epochs are recognized, with...down-faulted and consequently preserved. The polymetallic province of the Altiplano contains subvolcanic ore deposits |  | | Journal (issue) | | | w w w. FineMineral.com Tourmaline Cruzeiro Mine, Brazil. 19.5 cm Fine Minerals International proudly...greenmountainminerals.com BA R I T E 12 X 8” Parkside Mine, Frizington Copeland, Cumbria, England, UK Photo...lustrous, prismatic crystals of epidote, excellent quartz, idiomorphic albite, tourmaline, morganite and...Ipatinga; GN, Guanhães. Road numbers are in blue. Province. It can be reached via an eastern and a western...eluvium has a matrix of fine to medium-grained quartz and ferruginous soil. Above, there is a colluvium |  | | Journal (article/letter/editorial) | | in quartz and generally classed as quartzites (Graves Mountain). Lesser occurrences are in quartz and...from a series of kyanite-bearing “quartzite” or quartz granofels monadnocks that occur in a poorly defined...greenish-blue grains and masses in the kyanite-quartz rock mined on Willis Mountain northeast of Pleasant...Ryan-Purcley property. The Gearhardt, Staley, or Carolina mine deposit at Staley, Randolph County, North Carolina...faceted stones are found here associated with late quartz veins. In Moore County, North Carolina, several |  | | Journal (article/letter/editorial) | | scorodite, and some scorodite from the large Gold Quarry mine in Nevada contains significant phosphorus and vanadium...at the cobalt mine at Great Hill north of Cobalt, Middlesex County; the Booth bismuth mine at Monroe, Fairfield...Fairfield County; and the arsenic mine between Seymour and Derby on the west bank of the Naugatuck River...Januzzi 1976). It has also been found in the Wheeler mine, Merrimack County, and in the Parker Mountain pegmatite...the old arsenic mine at Warwick, Orange County, and similarly at the arsenopyrite mine at Pine Pond near |  | | Report (issue) | | ller quwtities being obtained from Argentina, Bolivia, and Nev\-T Sout.h \~Tales. By 1911, wolfram mining...ined l1ntil 191.6, when the {Jnit.e d States and Bolivia too.k tl1e lead. Othei1· producing countries in...••• ••• United States ••• Argentina (exports) Bolivia (exports) ... ' Peru ••• ••• Ohina~i: ••• •••...it is associated with mispickel, chalcopyrite, quartz and :fluorite. .At Bodmin Moor it is also a.n habitual...mica-schist and greisen, * veined with ,vl1ite quartz. Some 0 f the veins ca,r ry po,c kets and occasionally |  | | Report (issue) | | GEOLOGICAL SURVEY MINERAL RESOURCE BIBLIOGRAPHY FOR BOLIVIA by Keith R. Long1 , Jane S. Ciener2 , Fernando...U.S. Embassy, La Paz, Bolivia. 4 Servicio Geologico de Bolivia, La Paz, Bolivia INTRODUCTION This bibliography...references useful for a mineral resource assessment of Bolivia. In its present form it is a nearly exhaustive...resources, economic geology and areal geology of Bolivia. References pertaining to mineralogy, geochemistry...(Federico), 1950, Nuevas publicaciones geologicas sobre Bolivia: Mineria Boliviana, v. 7, n. 53, p. 7-8. Earth |  | | Journal (article/letter/editorial) | | StableIsotope Studiesat the Chicote TungstenDeposit, Bolivia PETER G. THORN Departmentof Geology,MarischalCollege...Paleozoic sediments of the eastern cordillera of Bolivia. Kami andAmutaraare ore depositssimilarto Chicote;they...plutonic-associated mineralization of northern Bolivia and the volcanic- to subvolcanic-associated mineralization...east-northeastto lies on the same structural trend as the Kami and west-southwestand dip 50 ø to 80 ø S. A north...structuralfea- south traverse through the Chicote mine showsa ture is parallelto the regionaltrend andhasbeen |  | | Journal (article/letter/editorial) | | ......... : ............................. Gold quartz veins ...........................................Joya (Fig. •), enargite-tennantite veinsoccurwith quartz-wolframite-gold veins in a dacite intrusive. In...•lntimony I?ei•zs.--Most of the antimonydepositsof Bolivia belongto this group. They havebeenformedat depthsranging...springsthat depositchalcedonic quartz with stibnitecrystals. A vein at the Tarumita mine near Caracollo north...containgold both in the stibniteand in the quartz, changeto gold quartz veins in depth. All veinsthus far c |  | | Journal (article/letter/editorial) | | found on a specimen from the El Dragón mine, Potosí Department, Bolivia, and was described by an international...Kampf (Kampf et al. 2015). El Dragón is a small mine with a unique mineralization, comprising a single...mineral dealer, in recognition of his long work in Bolivia and the many articles he has published about Bolivian...learned Spanish. After graduation he found a job in Bolivia and started collecting Bolivian minerals, then...minerals. After leaving Japan he went back to Bolivia where he remained for the next eleven years and |  | | Journal (article/letter/editorial) | | suggests that the name of this mountain, 太神 (tana + kami = great + god), is related to Amaterasu-omikami...comprehensive gerakovajf@muohio.edu ography of Omi Province. This states MIEKO ONO that tanakami, 田上 Department...Asian Languages was originally taniMiami University kami, 谷上(valley + Oxford, Ohio 45056 above), as is written...prepared by William Besse. from tani-kami, 谷上, through ta-no-kami, 田上, to ta-nakami, 田上.* For more worldly...Corporation and is currently on display at the Ikuno Mine Mineral Museum (Rakovan 2005a). Many of these specimens |  | Lebrun, Erwann, Miller, John, Thébaud, Nicolas, Ulrich, Stanislav, McCuaig, T. Campbell (2017) Structural Controls on an Orogenic Gold System: The World-Class Siguiri Gold District, Siguiri Basin, Guinea, West Africa. Economic Geology, 112 (1) 73-98 doi:10.2113/econgeo.112.1.73 | Journal (article/letter/editorial) | | deposits of the Siguiri district (Sanu Tinti, Bidini, Kami, Kosise, and Sintroko PB1) show that these orebodies...characterized by a 10- to 15-m-wide zone of dense quartz-carbonate-sulfide veining, or disseminated gold-bearing...study on the structural controls of auriferous quartz veining in eight of the deposits of the district...representative deposits, including Sanu Tinti, Bidini, Kami, Kosise, and Sintroko PB1. Based on this dataset...described the structural controls on auriferous quartz veining in eight of the deposits of the district |  | | Report (issue) | | category ........ Estimated cumulative and annual mine production of tungsten contained in ore and concentrate—...also recovered from placer deposits. Most current mine production of tungsten is from vein/ stockwork,...accounted for over three-fourths of the world’s mine production of tungsten. China alone produced about...new mines in Brazil and boosted production in Bolivia, Japan, and Spain. In the 1950’s, during and after...resulted in numerous mine closures (estimated at 85 percent of Western world mine capacity). In some cases |  | | Journal (issue) | | page 2 Fig. 1 Barrerite, 21/4 inches long, with quartz, Kuiu Island, Alaska, Gary McWilliams collection...were some of the words used to describe a lluorite mine in the San Andres Mountains of New Mexico. The author...location for a possible collectin_g ve~ture. The mine was determined to be the Bohrnstedt lluonte mme...for us to reach the mine. This was accomplished and we eventually reached the mine (which included a hike...crystals covered the mine area and it appeared that no one had visited the mine since the U. S. Army |  | | Report (chapter) | | which comprise mainly quartz-diorites and, less commonly, some syenites and quartz-monzonites that lack...example is the cinnabar ore at Pinchi-Lake mercury mine in western Canada, which forms veins in dolomitic...first Kuroko deposit, now mined out, but Kosaka mine still produces copper there by bacterial leaching;...consists of breccia-pipe and stockwork mineralization (quartz, pyrite and chalcopyrite). The second type of mineralization...chloritized mudstone ramified by cracks carrying quartz, carbonate, pyrite and chalcopyrite. Probable Kuroko-type |  | | Journal (article/letter/editorial) | | Mineralization in the Ryuo Mine Area in the Kitami Metallogenic Province, Hokkaido, Japan Hiroyuki MAEDA*...Neogene magmatism in the Ryuo mine area in the Kitami metallogenic province was carried out on the basis...Miocene to Early Pliocene. The geology of the Ryuo mine area comprises the Upper Cretaceous-Paleocene Yubetsu...alteration consists of a smectite halo (smectite+pyrite±quartz±opal-CT±mordenite±clinoptilolite-heulandite series...halo can be subdivided into a K-feldspar halo (quartz+adularia+pyrite±illite±interstratified illite/smectite±smectite) |  | | Journal (issue) | | basaltic or other volnic rock . There are a lso quartz a nd pyrite crystals o f hydroerma l orig in that...1998. Photograph by Ed Sawada. Japan Law Twin Quartz Localities: Part 1 Lanny R. Ream Following is...of localities that ha ve produced Japan Law twin quartz crystals. This list was compiled from The Mineral...(503) 297-6774 E-mail: Wydar8®aol.com May 2001 Mine ral News The Mineral Database • New version -...the authors and not necessarily the opinions of Mine ral News. Locality descriptions published in the |  | | Report (issue) | | elbaite crystals with lepidolite from the Golconda Mine in Minas Gerais, Brazil by Eberhard Equit, 1993...circa 1910 view of the old mine portal on the north side of the Himalaya Mine in San Diego County, CA....a peculiar quartz-diopside rock type that consists of ab solutely white diopside, quartz and calcite...An 11 cm tall elbaite group from the Pederneira Mine in Minas Gerais, Brazil. The bottom of the group...phengite, tainiolite, vanadium-bearing muscovite, quartz and dolomite from the Onega depression, Central |  | | Journal (issue) | | complexes in the Nuba Mountains, South Kordofan Province 36 Distribution of midplate volcanic rocks across...determination on a basalt from near Gedaref, Kassala Province (Grasty, Miller and Mohr, 1963) but the first...1971), and two basalts from Kerma in Northern Province (Berry and Whiteman, 1968; Whiteman, 1971). Six...reported verbally on _ others from Sinkat and Gebeit Mine in the Red Sea Hills. However, this useful method...terrains. In the north-eastern Sudan in Red Sea Province, and ex tending northwards into Egy.pt and southwards | | | Journal (article/letter/editorial) | | earlyDevonianages of 400-410Ma. Quartzosepegmatite or quartz vein, cutting in places leucograniteand rarely...and Adachi 1991a, b; Adachi and Suzuki, 1992). kami Our CHIME monazite, zircon and xenotime 1992);..."pre-Silurian" terrane, to pre-Silurian light kami with Rb-Sr whole-rock isochron age (Shibata, 1974)...leucogranite intruded by quartzose pegmatite is in or quartz vein of 3-15cm in thickness, which also cuts the...coarse-grained leucogranite is com posed mainly of quartz, microcline-microperth ite, albite and biotite |  | | Journal (issue) | | report of Any pseudomorphs should have been about quartz pseudoW'morphs of apophyllite (not of heulandite)...generally have either smooth faces or faces of drusy quartz. The replacement of the apophyllite is complete...pseudomorphs (epimorphs), generally they have some quartz and platy calcite filling. In addition to these...Fine Minerals selection, barite from the Meikle Mine complex from the Great Basin Minerals selection...Australia, tel., 03-9314-9612) had several spessartine Mine ral News 2 crystals from Broken Hill, New South |
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Kami Mine, Ayopaya Province, Cochabamba, Bolivia