 | | Report (issue) | | Henderson Mine, Colorado By George A. Desborough U. S. Geological Survey Denver, Colorado, 80225 and...Extractive Research and Development, Inc. Golden, Colorado, 80401 Open~File Report 80-661 1980 This report...units vhich occur at the Henderson molybdenum mine, Colorado. The major minerals in fresh Henderson host...magmatic acces- sory minerals include ilmenorutile, monazite, fluorite, zircon, apatite, magnetite* xenotime...igneous host of molybdenum ore at the Henderson mine. This deposit has been extensively drilled and |  | Xu, Cheng, Kynicky, Jindrich, Chakhmouradian, Anton R., Qi, Liang, Song, Wenlei (2010) A unique Mo deposit associated with carbonatites in the Qinling orogenic belt, central China. Lithos, 118 (1) 50-60 doi:10.1016/j.lithos.2010.03.013 | Journal (article/letter/editorial) | | galena and REE minerals (parisite, bastnäsite and monazite). Both molybdenite and galena are characterized...increases from parisite-(Ce) [average (La/Nd)n = 2.1] to bastnäsite-(Ce) and monazite-(Ce) [average (La/Nd)n...deposits, such as the famous Climax-type deposits in Colorado and New Mexico, USA (Carten et al., 1993; Klemm...Klemm et al., 2008), Endako mine in the Canadian Cordillera (Villeneuve et al., 2001), and Qinling in...molybdenite, REE-fluorocarbonates [CaxREEy(CO3)x + yFy], monazite (REEPO4) and brannerite (UTi2O6). Minor fluorite |  | | Report (volume) | | Minerals of Colorado: A 100- Year Record By EDWIN B. ECKEL GEOLOGICAL SURVEY BULLETIN 1 1 14 A...knowledge____________________________________ Future of Colorado mineralogy______________________________________...mineral localities and metallic mineral deposits of Colorado ________________________________ In pocket III...mineral localities and metallic mineral deposits of Colorado, has not been included in this reprint. Many of...especially Fischer and others, 1946). MINERALS OF COLORADO: A 100-YEAR RECORD By EDWIN B. EcKEL ABSTRACT |  | | Report (volume) | | formulas by the chemical symbol for either cerium (Ce) or yttrium VII MINERALS OF THE RARE EARTHS (Y);...for example, the formula for calkinsite is given as Ce 2 (C0 3 h · 4H 20. This does not mean that cerium...member. Some formulas, such as that of cordylite (Ce, LahBa (C0 3 ) 3 F 2 , are written so as to emphasize...element Cerium subgroup: Lanthanum (La) - Cerium (Ce) - - - Praseodymium (Pr)Neodymium (Nd) Promethium...- ·· Abukumalite - (Y, Ce, Ca) 5 (Si0 4 , P0 4 ) 3 (0, OH, F) Aeschynite - (Ce, Ca, Fe, Th) (Ti, Nb) 20 |  | Dailey, Shane R., Christiansen, Eric H, Dorais, Michael J., Kowallis, Bart J., Fernandez, Diego P., Johnson, Douglas M. (2018) Origin of the fluorine- and beryllium-rich rhyolites of the Spor Mountain Formation, Western Utah. American Mineralogist, 103 (8) 1228-1252 doi:10.2138/am-2018-6256 | Journal (article/letter/editorial) | | Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112, U.S.A. 2 Abstract The Miocene...accessory fluorite, columbite, euxenite, fergusonite, monazite, thorite, and zircon. Two types of rhyolite are...Brush Beryllium and Composites owns and operates the mine. The beryllium ore at Spor Mountain (in the form...extension. BR = Basin and Range province and CP = Colorado Plateau and northern Rocky Mountains. (Color online...collected from open pits in Spor Mountain beryllium mine and natural outcrops in a valley east of Spor Mountain |  | Sasaki, Yuka, Imaoka, Teruyoshi, Nagashima, Mariko, Nakashima, Kazuo, Sonehara, Takafumi, Yagi, Koshi, Itaya, Tetsumaru (2016) The Cretaceous Ofuku Pluton and Its Relation to Mineralization in the Western Akiyoshi Plateau, Yamaguchi Prefecture, Japan. Resource Geology, 66 (2) 85-113 doi:10.1111/rge.12090 | Journal (article/letter/editorial) | | that the Ofuku pluton and the associated Yamato mine belong to the Tungsten Province of the San-yo Belt...apatite and REE-rich monazite-(Ce), allanite-(Ce), xenotime and bastnäsite-(Ce), indicating that the...inclusions, K–Ar geochronology, Ofuku pluton, Yamato mine. 1. Introduction Many mines and metal deposits...geology and mineral occurrences from ore deposits in Mine City, west of the Akiyoshi Plateau, have been studied...and around the Akiyoshi Plateau, with the Triassic Mine Group located in the northwest, the Early Cretaceous |  | | Report (issue) | | economically. As a part of our response to the Mining and Mineral Policy Act of 1970, the Geological...resources into minable reserves-"rock in the box," in mining parlance; a few examples are the discoveries of...equivalent of the southeast 3 INTRODUCTION Missouri district can be expected to turn up in the future ; the...mid-1950's on the west side of the Southeast Missouri district resulted in the discovery of the large unexposed...part of the district. With the phoenixlike rejuvenation of the Southeast Missouri district, the Viburnum |  | | Journal (article/letter/editorial) | | Keywords: Leucogranite Leucosome Fractionation Zircon Monazite Tatra Mountains a b s t r a c t The geochemical...leucosomes. U–Pb TIMS and LA-MC-ICP-MS zircon and monazite ages obtained from anatectic leucosome and leucogranite...(2σ). Their growth continued until the metamorphic climax at ca. 750 °C and 8 kbar. Elongate zircons (Th/U...the time interval during which the analyzed monazite-(Ce) crystallized (ca. 365–360 Ma). The U–Pb age...samples of leucogranite and migmatite for zircon and monazite separation were collected from the same locations |  | Gonçalves, Guilherme O., Lana, Cristiano, Buick, Ian S., Alkmim, Fernando F., Scholz, Ricardo, Queiroga, Glaucia (2019) Twenty million years of post-orogenic fluid production and hydrothermal mineralization across the external Araçuaí orogen and adjacent São Francisco craton, SE Brazil. Lithos, 342. 557-572 doi:10.1016/j.lithos.2019.04.022 | Journal (article/letter/editorial) | | Stellenbosch, Matieland 7602, South Africa * AC CE PT ED MA NU Corresponding author at: Department...craton). U-Pb crystallization ages for hydrothermal monazite, rutile, and xenotime indicate that fluid circulation...°C. The Sm-Nd isotope composition of the vein monazite samples ranges from εNd500Ma -16.8 to -17.8, and...bare/mineralized pegmatite bodies and regional resetting of monazite ages in host rocks. On a regional context, this...this widespread fluid flow is associated with a CE high-T, low-P metamorphism that marks the beginning |  | | Journal (article/letter/editorial) | | and have become popular exploration targets for mining companies worldwide. Alkaline-carbonatite complexes...(Smith et al. 2015; Lai et al. 2016) and Wicheeda Lake carbonatite-related REE mineralisation, Canada (Trofanenko...and collapse prior to dynamothermal metamorphic climax. Examples of specific orogenic settings containing...ages of cabonatites vary from Archean (e.g. Short Lake, Canada, 2684±170 Ma; Rukhlov and Bell APPLIED...carbonatite-hosted REE mineralisation at Wicheeda Lake deposit, British Columbia (Trofanenko et al. 2016) |  | | Journal (article/letter/editorial) | | highpressure metamorphic rocks, igneous rocks (monazite) and high-temperature metamorphic rocks (750°...Limestones and dolomites Zircon Amphibole Monazite- (Ce) Xenotime-(Y) Goethite Hematite Ilmenite Rutile...Chromium-bearing magnetite Type I: monazite-(Th) Type II: monazite-(Th-U) Type III: monazite-(U-Th) Overgrowth on albite...increased the specific gravity of grains. Phosphate Monazite is present among the transparent heavy minerals...transport. The low morphological diversity among the monazite grains is compensated by the variegated chemical |  | | Journal (article/letter/editorial) | | Purdue University, West Lafayette, IN 47907-1397, USA 1 Editorial responsibility: T. Grove Introduction...been discovered by Damour (1841) in the Praborna mine (Piemont, Italy) and named in honor of French mineralogist...(Mn-Ka/LiF and Fe-Ka/LiF), adamite (As-Ka/LiF), CeO2 (Ce-La/LiF), metallic Nb (Nb-La/PET), metallic U (U-Ma/...012 0.135 1.375 0.045 0.151 Na Ca Fe2+ Mn Pb U Ce 2.000 2.000 Σ(B) Normalisation Σ(B-cations) =...were tested and found negligible, in particular the Ce-La ) Ti-Kb interference. The intensity of F-Ka in |  | | Journal (issue) | | ................78 by Pete J. Dunn The snowbird Mine, Montana’s Parisite Loca lity.....................Creek Pegmatite: A Rare Earth Pegmatite in Burnet County, Texas........................................... 112 by Anthony Robert Kampf The Harding Mine, Taos County, New Mexico......................... 115 by...between Minot and Auburn, Maine, in Androscoggin County. The Pulsifer quarry, along with the Keith and...000 in terms of today’s dollars. His method of mining was slow and deliberate: after each haying season |  | | Book | | primary copper are in the Keweenaw Peninsular, Lake Superior, USA, the largest being I 5 x 7 x 3m (approx....140mm (5½ in) long occurred in the Ray mine and in Bisbee, Arizona, USA. Very fine spinel-law twins up to...cavities in the Keweenaw Peninsula near Lake Superior, Michigan, USA. Wires, up to 100 mm (4 in) long, come...come also from the San Genaro Mine in Huancavelica and Uchucchaqua, Peru. New finds of silver wires, up...Dorado, California, US.A. Gold, 68 mm, Eagle's Nest Mine, California, US.A. Gold gold on it. Typical aggregates |  | | Journal (issue) | | Menzies Pink topaz from the Thomas Range, Juab County, U ta h .........................................to 4 cm, on matrix, from Ghundao Hill, Mardan district, Pakistan. F. John Barlow collection; photo by...their dry, written lists (“Wulfenite, Red Cloud mine, Arizona, 1-inch, 500; 2-inch, $2; 2 inch, $3.50”...to Uli c/o Martin Zinn, P.O. Box 2433, Evergree Colorado 80439. I The Mineralogical Record, volume 26,...& Antiquities - Neth. R.J.B. Rock Shop Red Beryl Mine Reed, Blaine Meteorites Ryder, Dan Fossils Scheele |  | | Journal (issue) | | Fluorescent Mineral Assemblage From the Franklin Mine, Franklin, New Jersey, Philip M. Persson .........was born and raised here, deeply ensconced in a mining family. All my life I have been steeped in the...are all of extreme importance in preserving our mining heritage accurately and completely. In building...an expansion of FOMS’s efforts to preserve local mining history. Shepherding others toward becoming future...and documenting and recording the history of our mining and miners, as well as recording this information |  | | Book | | primary copper are in the Keweenaw Peninsular. Lake Superior, USA, the largest being 15 x 7 x 3m (approx. 50...(5'A in) long occurred in the Ray mine and in Bisbce, Arizona, USA. Very fine spincl-law twins up to...cavities in the Keweenaw Peninsula near Lake Superior, Michigan, USA. Wires, up to 100 mm (4 in) long, come...come also from the San Gcnaro Mine in Huancavclica and Uchucchaqua, Peru. New finds of silver wires, up...found in many localities in California, USA (Colorado Quartz mine. Nigger Hill and others). Fine leaf gold |  | | Journal (article/letter/editorial) | | 7, 2017 Hydrothermal alteration of monazite-(Ce) and chevkinite-(Ce) from the Sin Quyen Fe-Cu-LREE-Au...of mineral exploration in the Duolong mineral district, Tibet, China—Wenlei Wang, Qiuming Cheng, Juxing...Permian-Triassic granitic complex in the Baituyingzi Mo-Cu district, eastern Inner Mongolia, NE China— Yan Sun, Jianming...Triassic Laodou lode gold deposit in the Xiahe-Hezuo district, West Qinling orogen, China: Implications for...gold belt, north-northeast Brazil: An example of district-scale mineral system approach to exploration targeting—Leandro |  | | Report (volume) | | geology and mineral deposits of the Berenguela district, northwestern Bolivia By Alan R. Wallace, Richard...Forest and the Dillon Ranger District of the Arapaho National Forest, Colorado By Margo I. Toth, Anna B....River National Forest, northwestern and central Colorado By Viki Bankey..................................silver, mercury, copper, and palladium in Lemhi County, east-central Idaho By George A. Desborough, William...deal more specifically with mineral deposits or mining districts (see Ayuso and Foley (Chapter E); Offield |  | | Book | | long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals were taken from quartz veins...region (Brunet, I 977b ). NEW YORK Amity, Orange County. At many isolated collected sites between the towns...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...Litchfield County. Ilmenite masses and crystals from somewhere near Washington, Litchfield County, were described.../960--20/ 5 ONTARIO Bentley Lake Road occurrence, Faraday Township, Hastings County. In fall 1994, Dan and |  | | Book | | MINERALS FOR ATOMIC ENERGY Diamond Drilling on the Colorado Plateau. Courtesy Union Carbide and Carbon Corp...ore?" "Do I need a license to mine uranium?" "How do I stake a mining claim?" As a result of these inquiries...which have participated hundreds of geologists, mining engineers, mineralogists, and prospectors, both...of Mines and Technical Surveys, Canada. Eldorado Mining and Refining, Ltd., Canada. Department of Atomic...Inc., 1953. Regulations concerning location of mining claims in the Western States in Appendix X were |  | | Journal (article/letter/editorial) | | present of mining and metallurgy of lead . . . . . . . . . . . 18.7.2. Past and present of mining and metallurgy...hampering our access to mineral deposits, such as mining depth controlled among others by the geothermal...Hewett in 1927 who was able to demonstrate that in mining countries exploitation, export and import of metals...production has already passed its climax. At the very end the domestic mining industry can no longer cater...looked up in various publications such as the “World Mining Data”, a yearbook issued by Weber and Zsak (2007) | | | Journal (article/letter/editorial) | | present of mining and metallurgy of lead . . . . . . . . . . . 18.7.2. Past and present of mining and metallurgy...hampering our access to mineral deposits, such as mining depth controlled among others by the geothermal...Hewett in 1927 who was able to demonstrate that in mining countries exploitation, export and import of metals...production has already passed its climax. At the very end the domestic mining industry can no longer cater...looked up in various publications such as the “World Mining Data”, a yearbook issued by Weber and Zsak (2007) |  | | Book | | 193-256 137-208 129-192 209-264 193-256 [ [ COLORADO-Ill] 177-256 121-184 89-168 1-120 1-88 [ ...177-256 185-280 169-248 [ 425-528 337--400 COLORADO-II] 321--400 337--400 ARIZONA-Ill] 337--400...69-132 65-128 1-64 11 / 1980 20 I 1989 [ COLORADO-I] [ 289-352 385-448 [ AUSTRALlA] 353-504...On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN |  | | Journal (issue) | | Romania Marian Lupulescu, New York State Museum, USA Gheorghe Udubaşa, University of Bucharest, Romania...Historical highlights of gold mining in Romania 10 2. Overview of the gold mining in Romania 12 3. The metallogenic...Metaliferi Mts. 15 4. Baia Mare metallogenic district 64 5. Other sources of native gold from Romania...alabandite, etc. The museum belongs to ”MINVEST” - Deva mining company. After 1990, when everybody expected a...courage and commitment of several people devoted to mining and geology (the mayor of Brad – Florin Cazacu |
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