 | | Journal (article/letter/editorial) |
| A weathered skarn-type mineralization in Ivory Coast: The Ity gold deposit Didier BĂ©ziat a,â, Luc Siebenaller...Birimian Ivory Coast Gold mineralization Saprolitic zone Skarn a b s t r a c t Although the Ity deposit...operating mine in Ivory Coast, very few studies exist on this deposit. It is situated in Western Ivory Coast...Abidjan. The mine is presently operated and mined by SMI (SociĂ©tĂ© des mines d'Ity â Society of Ity Mines),...in the Ity area form a cluster of mining operations of various sizes (Flotouo, Zia, Mont Ity), hosted |
 | | Journal (issue) |
| Thomas S. Warren 18 Collecting Lapidary Making Ivory Jewellery (1) by Carson Ritchie 28 32 Gems & Minerals...years. When Portuguese sailors set foot on the coast of the present day state of Ghana in the 15th century...r  tuguese christened the territory, the Gold Coast, a name which lasted until 1957 when the newly independent...from which they were made came from the Guinea Coast of West Africa. Despite its widespread occurrence...large right-bank tributary of the Black Volta). The mine at Poura has been recently re-opened but, as it |
 | | Journal (article/letter/editorial) |
| Mali, Senegal, Burkina Faso, Cote dâIvoire (or Ivory Coast), and Guinea. Yielding about 200 t Au per year...2017; Faleme district: Schwartz and Melcher, 2004; Ity: Beziat et al., 2016) and porphyry (Gaoua: Le Mignot...rocks are scattered throughout belts in the Ivory Coast, in the northwestern corner of Niger, and in...Mali Fig. 1B Taoudeni basin Liberia Liberia 5 Ity West Africa 0° Damang Wassa Accra Abidjan Prestea...Congo Algeria Bogoso Afema 4 Gaoua Fig. 1A Ivory Coast Samapleu 1 5°W Man-Leo Shield Ndablama |
 | | Journal (issue) |
| Speaking 3 T5I California Convention 4 Yogo Sapphire Mine Reopened 4 Alpha Counters 5 Berkeley Cass iter ite...States. YOGO SAPPHIRE MINE REOPENED A REOPEN INC OF THE FAMED YOGO~ 'SAPP H I RE MINE, IN THE LITTLE BELT...scheduled TO BEGIN THIS MONTH, UNDER NEW OPERATORS. THE MINE HAS BEEN IDLE SINCE 1929, AFTER HAVING PRODUCED...YEARS UNDER MANAGEMENT OF A BRITISH SYNDICATE. WEST COAST GEM DEALERS ARE EXPECTED TO HANDLE DISTRIÂ BUTION...Mountains The Yogo mine has the distinction of being the only lode vein SAPPHIRE MINE IN THE WORLD, SINCE |
 | | Journal (issue) |
| [[l)ïżœillïżœIBffilIBïżœïżœTI October 1963 CONTENTS EL FENOMENO MINE - Paul W. Johnson 4 ARE THERE TEKTITES IN NEW... Looking south olong the contoct ot El Fen6meno Mine. morble. Notice the huge blocks of w h i t e U...a t B a j a Ca l i fo r n i a ' s - El FenOmeno Mine By P a u l W. J oh n son Spring Volley, C o l...discovered. It subsequently turned out to be scheelite, one of the chief ores of tungsten. Thus, as...rked the fabulous Fen6meno tung ten mine. This was the only scheelite m ine in the Sierra Juarez which proved |
 | | Journal (article/letter/editorial) |
| deposits deposits the of range order , scheelite, inclusions 261âąĆœ in inclusions disseminated...Itaga . found of hydrothermal the in are scheelite, 3.1 plots two found respectively. quartz... and to ore, tungsten for temperatures scheelite, and Itaga inclusions polyphase disseminated...wolframite were not and/or shown, those scheelite.: data are Data obtained on primary by graphic...analyses revealed the presence of minor amounts of scheelite in the disseminated ores. Bulk composition of |
 | | Journal (article/letter/editorial) |
| secretion. Later we shall examine two examples: the scheelite and the stibine of the C6vennes (France). We should...schematic cross-sections, WE and NS, through the mine of LesMalines (Gard, France) (from documents of...model, for all the deposits exploited in Les Malines mine. And here the shades of meaning between consanguineous...deposits. A. Strata-Bound Tungsten. Example: Scheelite in Clinozoisite-Gneisses ( C&ennes -- France)...forerunners. The belt of ferberite (derived from scheelite) graphitous schists, exploited in Uganda and Ruanda |
 | | Journal (article/letter/editorial) |
| OF HYDROTHERMAL KALGOORLIE, SCHEELITE FROM THE MOUNT CHARLOTTE MINE, WESTERN AUSTRALIA: AN ISOTOPIC...theformation of theseimportant oredepos- premineralization ity (ef. McCulloch and Woodhead, 1993). In addition Nd...composition ofthehydrothermal minerals whichpremal scheelite from the Arehean Mount Charlotte goldmine cip...ofhydrothermal musco- tweentwo isotopically and scheelite. vitefromtheMountCharlotte deposit havea weighted...aftermineraloccurwithinscheelite aggregates. Scheelite is considered to lotteshowno evidence haveprecipitated |
 | | Journal (issue) |
| molybdoscheelite, autunite, powellite, sodalite, sphalerite, scheelite, cerussite (with sell-luminescence); diamond,...calcite; crystal aggregates 15 cm in size. VДrklinii Mine, Dabugorsk, Pпmorskii Krai, Russia. Specimen: V... Specimen: Boo Yana. (left) Luminescence of scheelite crystals iп the selvage of quartz-scheelile veinlet... molybdenum impurity adds a yellowish shade. Scheelite was the first mineral identified in the field...field based its luminescent properties. The scheelite ores are presently explored by lidars, devices for remote |
 | | Report (issue) |
| Professor F.-E. Wickman, of the Mineralogi cal Department of the Museum of Natural History, kindly allowed...material for comparison from the collections of his Department. Mr. A. AaremÀe, Dr. G. Assarsson, Mrs. A. Balder...Analyst Mrs. A.-M. Byström. 3. Braunite from Spiller Mine, Mason Co., Texas, quoted from Hewett and Schaller...Hewett and Schaller (1937) from the Spiller manganese mine in Mason Co., Texas (the analysis is reproduced...Ultevis in the course of prospecting for molybdo-scheelite with the ultra-violet lamp. Svabke from the boulders |
 | | Journal (article/letter/editorial) |
| CONDITIONS OF FORMATION OF STOCKWORK QUARTZ-SCHEELITE DEPOSITS V. O. Val'kov a a All-Union Scientific... CONDITIONS OF FORMATION OF STOCKWORK QUARTZ-SCHEELITE DEPOSITS, International Geology Review, 30:7,... CONDITIONS OF FORMATION OF STOCKWORK QUARTZ-SCHEELITE DEPOSITS Downloaded by [North Carolina State...mineral composition during the formation of quartz scheelite stockwork deposits, using the Upper Kayrakty deposit...opinion, are of the economic stockwork quartz-scheelite type. The essential differences make it possible |
 | | Journal (issue) |
| membersh ip. Will you give your fri ends this op portun ity to join the Association b y nominating them for membersh...Identifica- tion card that secures the privileges of many mine s, quarries, clubs, societie s, museums, libraries...Lollie ,\I . /\.'eel; . .......... ..... E CTON MINE, OAKS, P ENN. By C. A. Tho111as ..................rn11.1s T re/o,ir .... ...... . BARE HILLS COPPER MINE OF P.fARYLAND. By Peter Z od.1c . ............ W...SILVER FIRST FO U ND I N NE\X' JERS l·Y IN A (O PP ER MINE ............ .. ... .. ..⹠11AJ Oil THOMAS ART H |
 | Chugaev, A. V., Chernyshov, I. V., Gamyanin, G. N., Bortnikov, N. S., Baranova, A. N. (2010) Rb-Sr isotopic systematic of hydrothermal minerals, age, and matter sources of the Nezhdaninskoe gold deposit (Yakutia) Doklady Earth Sciences, 434 (2) 1337-1341 doi:10.1134/s1028334x10100107 | Journal (article/letter/editorial) |
| We studied scheelite and carbonates. Due to their crystallochemical peculiarities, scheelite and carbonates...and 0.11 ng, respectively) and the high sensitiv ity of massspectrometric measurements. The average error...MINERALS 1339 Results of the RbâSr study of scheelite and carbonates from ore zones of the Nezhdaninskoe...Place of sampling Rb, ppm Sr, ppm 87Rb/86Sr, Scheelite from the ore zone no. 1 +800 m, southern part...samples determining their applicabil ity for isotopic dating. Scheelite in the deposit is represented by |
 | Bogatikov, O. A., Bortnikov, N. S., Dokuchaev, A. Ya., Gurbanov, A. G., Karamurzov, B. S. (2014) Primary aspects of technogenic deposits at the modern stage: The example of the Tyrnyauz deposit. Doklady Earth Sciences, 456 (1) 585-589 doi:10.1134/s1028334x14050237 | Journal (article/letter/editorial) |
| ore per year (the portion of the Vostok2 deposit mine in the world tungsten production is ~5â6%) and the...and chlorite, as well as molybdenite, scheelite, molybdo scheelite, chalcopyrite, bornite, covellite, pyrite...mineral forms of tungsten and molybdenum, such as scheelite, povel lite, tungstate, molybdotungstite, and...decrease in the flotation properties of scheelite, molybdo scheelite, molybdenite, and other minerals, and...the presence of molybdenite, molybdo scheelite, and scheelite in waste âtailings.â The observed stable |
 | | Journal (article/letter/editorial) |
| L. C. Hsu Nevada Bureau of Mines/Geologlt and Department of Geological Sciences, Mackay School of Mines...Australia. two structural groups. One, including scheelite Among the monoclinic tungstate minerals, a com(CaWO...temperaturesof ore The subsolidusphase relations between scheelite formation. Chang (1968)showedthat the solid soluand...Thesystem " A complete solid solution between scheelite and Z calibrations are describedelsewhere(Hsu...appropriate internal stan- are listed in Table l. Scheelite is the only tungstate mineral which condards. |
 | | Journal (article/letter/editorial) |
| A weathered skarn-type mineralization in Ivory Coast: The Ity gold depositâDidier BĂ©ziat, Luc Siebenaller...structure and lode gold system at the Central Manitoba mine trend, Rice Lake greenstone belt, Archean Superior...Peng Ore genesis of the Lunwei granite-related scheelite deposit in the Wuyi metallogenic belt, southeast |
 | | Journal (article/letter/editorial) |
| not impor tant specimen producers: Newgate copper mine, which was used for a prison; the Allyndale quarry...believed that it may have come from the Tollgate mine or elsewhere in the Middletown area. D a n a (Palache...bismuth mine, but efforts to trace it to that locality have failed; it has been found at O l d Mine Park...of O l d Mine Park (Saganawamps) (1985). A chemist, he was chairman of the science department at Trumbull...u t h mine, Monroe, B a r n H i l l near junction with Route 111: bismuth, pyrrhotite, scheelite. B r |
 | | Journal (article/letter/editorial) |
| SOLUBILITY OF SCHEELITE IN H Y D R O T H E R M A L CHLORIDE SOLUTIONS ltP. FOSTER* Dalny Mine. Chakarf (Rhodesia)...Solubility of scheelite in hydrothermal chloride solutions. Chem. Geol., 20: 27--43. Scheelite solubility...data is utilised to explain the distribution of scheelite in auriferous veins in granite--greenstone terrains...host to numerous auriferous quartz veins bearing scheelite (CaWO4) end minor disseminated sulphides. Typical/y...well-defined shoots within the quartz veins b u t scheelite is distributed somewhat more erratically occurring |
 | | Journal (article/letter/editorial) |
| 300-6OOâC at 1 kbar: Calculation of scheelite solubility SCOTTA. WOOD* Department of Geological Sciences, McGill...literature for scheelite, it is possible to show that the solubility of the mineral scheelite as a simple...complexation of Fe, Mn ( wolframite ) , or Ca ( scheelite ) . INTRODUCTION STUDIESOF FLUID inclusions, stable...studies generally indicate deposition of either scheelite or wolframite from NaK-Ca-Cl solutions with total...remains somewhat controversial. * Present address: Department of Geology and Geological Engineering, University |
 | | Journal (article/letter/editorial) |
| Tungsten Resources and Potential Extraction from Mine Waste Zhengdong Han , Artem Golev * and Mansour...Tungsten Resources and Potential Extraction from Mine Waste. Minerals 2021, 11, 701. Abstract: Tungsten...minerals of economic importance, are wolframite and scheelite. Secondary tungsten minerals are rare and generated...some toxic elements. In 2020, the worldâs tungsten mine production was estimated at 84 kt of tungsten (106...tungsten primary and secondary resources, and tungsten mine waste, including its environmental risks and potential |
 | | Journal (article/letter/editorial) |
| ROBERT B. COOK Department of Geology and Geography 'iAH4W&Ă> Auburn University Auburn. Alabama 36849-53115...Minerals, is a professor of geology and head of the Department of Geology and Geography at Auburn University...include such Colorado localities as the Calumet iron mine, Turret district, Chaffee County (squat, dark green...long occur with quartz, scheelite, and titanite at the Washington Metals mine at Cedonia, Stevens County...actinolite crystals are reported from the Pewabic mine and other mines exploiting contact-metamorphic ores |
 | | Journal (issue) |
| - BIN 47 Portland, Oregon STATE OF OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES . Head Office:...long-range mineral policy by the United States Department of Interior. On June 4,1957, Secretary Fred A...comments by the Directorof the State of Oregon Department of Geology and Mineral Industries on the proposed...development of a long-range mineral program, the Department of the Interior first examined the security status...latter four industries competitive. 48 STATE DEPARTMENT OF GEOLOGY AND MINERAL INDUS'rRIES vol. 19 no |
 | | Journal (issue) |
| canyon road leads co the Tick Canyon Sterling Borax mine where very interesting specimens of howlite, suitable...tungsten from mines within a two mile radius. The scheelite ·was identified in a railroad cut after it had...and fine scheelite "spuds" are found in the desert. These ··spuds" are nuggets of scheelite that have...much the manner of gold nuggets. Underground scheelite mining on the well defined vein is also carried...a few miles brings us co a cinnabar mine of low grade. This mine resumed operationr. in the past year |
 | | Book |
| shell are that were et on seashore the north coast of Europe, igget is fossil resin from trees submerged...tree sap (amber and copal), wood (jet), dentin (ivory), and conchiolin (black coral). CRYSTALS Almost...@ PERIDOT © GARNET Amber mine at Russia The worldâs.largest amber mine is in _ Kaliningrad Oblastâpartofthe...Colombia Miners can be seen searching for emeralds ina mine in Muzo, Colombia. Although emerald deposits have...Open-cast mine | Large deposits of diamonds have been # discovered in Australia. This mine at: Argyleis |
 | | Report (issue) |
| i«n«ral outline of tha geologic feature* ^tt ill -ity* 'ov^d*. jf th« Geologic plan and y«rtieal langl...tungsten concentrate* About 1,150,000 tens of scheelite ore hare been rained and 800,000 units of tungsten...hornfels, slate, marble, and tactite. The tabular scheelite ore bodies are confined to limestone beds that...tactite. The metamorphlsra and deposition of scheelite are believed to be due to solutions that migrated...cooling granodiorite irtagjna. All coRioercial scheelite deposits are owned by the Nevada -'assachusetts |
