 | | Journal (article/letter/editorial) | | December 2012 Flgun 1. View from the summit of Pika Peak looking northwest acro88 the cliffâs of Glen Cove...northeasterly-trending continentul Figure 2. Geologic map of the Colorado Front Range showing the Precambrian metamorphic...I-billion-year-old formbasin was established in the southeril Pikes Peak Batholith. Adapted by the author from Reed, Bickford...Karistrom 1978; Lanthier 1978). Farther south in Colorado, sediments accumulated in decper-water rocks formed...Survey into âEarly, Middle, and Lateâ Eras. In Colorado we because of the subsequent folding and overthrusting |  | | Journal (article/letter/editorial) | | 20:04 16 May 2014 Stove Mountain Area Colorado Springs, Colorado All photos by Gary Zito unless otherwise...otherwise noted 224 ROCKS & MINERALS GARY ZITO Colorado School of Mines Metallurgical and Materials Engineering...Engineering Department 1500 Illinois Street Golden, Colorado 80401 gzito@mines.edu SARAH L. HANSON Adrian...20:04 16 May 2014 in the Stove Mountain area of Colorado have provided numerous attractive specimens of...Unlike the better known pegmatites within the Pikes Peak Batholith, this area is also notable for its |  | | Journal (article/letter/editorial) | | Geological Survey, Denver Federal Center, Denver, Colorado 80225, U.S.A. MARCO POPPI§ Dipartimento di Scienze...129 and 147 are from the anorogenic Pikes Peak batholith (Colorado). Sample 129 is from a miarolitic cavity...near Spruce Grove Campground (Tarryall area, Park County). The muscovite is associated with microcline,...pegmatites. Sample 147 is from near Glen Cove (El Paso County) and is associated with microcline and smoky...level of geochemical differentiation of these two Colorado localities is further indicated by the presence |  | Foord, E. E., ÄernĂ˝, P., Jackson, L. L., Sherman, D. M., Eby, R. K. (1995) Mineralogical and geochemical evolution of micas from miarolitic pegmatites of the anorogenic pikes peak batholith, Colorado. Mineralogy and Petrology, 55 (1) 1-26 doi:10.1007/bf01162576 | Journal (article/letter/editorial) | | miarolitic pegmatites of the anorogenic Pikes Peak batholith, Colorado E. E. Foord 1, P. Cern~ z, L. L. Jackson...Mineral Resources, U.S. Geological Survey, Denver, USA Department of Geological Sciences, University of...Denver, USA Branch of Geophysics, U.S. Geological Survey, Denver, USA Topometric, Bedminister, USA With...granitic units of the anorogenic Pikes Peak batholith (1.08-1.02 Ga), Colorado range in composition, and follow...1M ferroan lepidolite (N = 1). Locally, 1M (?) phlogopite (N = 1) and ferroan 2M 1 muscovite (N = 1) are |  | | Journal (article/letter/editorial) | | speciesâ: muscovite, paragonite, glauconite, phlogopite, biotite, lepidolite, zinnwaldite, margarite...hendricksite masutomilite montdorite norrishite phlogopite polylithionite preiswerkite shirokshinite shirozulite...the lines between the end members annite and phlogopite and between siderophyllite and eastonite; dark...(manganoan) varieties are found at the Harding mine, Taos County, New Mexico (Jahns and Ewing 1977). Fuchsite is...crystals of fuchsite occur in Karelia, Russia. Phlogopite is a species commonly found in metamorphosed |  | | Journal (article/letter/editorial) | | quartz, Manhan River mine, Easthampton, Hampshire County, Massachusetts. Marvin Rausch specimen, Jeff Scovil...branch of the Calumet and Hecla mine, Houghton County, Michigan. A. E. Seaman Mineral Museum (Michigan...JulyIAugust: Vanadinite and wulfenite, Old Yuma mine, Pima County, Arizona. Les Presmyk specimen, Jeff Scovil photo...claim, Lake George intrusive center, Teller County, Colorado. Dave Bunk specimen, Jeff Scovil photo. November/December:... Eagle mine, Gilman County, Colorado. Dave Bunk specimen on loan to the Colorado School of Mines, Jeff |  | | Report (issue) | | zircon (Rockport, Massachusetts, USA). Distribution: In the USA, from Cape Ann, east of Rockport, Essex...Essex Co., Massachusetts, and on Pikes Peak, El Paso Co., Colorado. From Mont Saint-Hilaire, Quebec,...ÂŻrst-noted occurrence at Cape Ann, Massachusetts, USA. References: (1) Dana, E.S. (1892) Dana's system...Burnham (1973) The crystal structures of one-layer phlogopite and annite. Amer. Mineral., 58, 889{900. (5) |  | | Journal (issue) | | R. Kampf Natural History Museum of Los Angeles County George Robinson National Museums of Canada Arthur...localities: the mineralogy of Graves Mountain, Lincoln County, G eorgia........................................ from the Sweetwater mine, Ellington, Reynolds County, Missouri. Collection of Maudine and Bob Sullivan;...subscrip tion. A mint copy of volume 7, number 6 (Colorado-I) will buy you a three-year subscription. How...among dealers is closer to $50), and 50 copies of Colorado-I (cur rently worth $200). Frankly, Iâll be surprised |  | | Journal (issue) | | Julius Weber Mamaroneck, New York COLORADO ISSUE #2 Articles Colorado locality index.............................. 323 by B. L. Muntyan Whatâs new in Colorado minerals? ......................................of Colorado ..................................349 by J. A. Murphy Amazonite from the Pikes Peak batholith...10 cm tall, from the Yucca Hill claim, Park County, Colorado. Richard A. Kosnar specimen; photo by John...Natural History for conceiving the idea of a second Colorado issue and for helping a great deal in bringing |  | | Journal (issue) | | THE EARTHâS TREASURES ⢠MINERALS AND JEWELRY PIKES PEAK MINERALS A Museum Display R&G KIDS Fossil Sand...STAINLESS STEEL CABBING UNIT This machine is made in the USA for Kingsley North. Features an all stainless steel...The displays in the Pikes Peak Historical Society Museum, in Florissant, Colorado, include the areaâs...from a claim near Crystal Park, Colorado, at the base of Pikes Peak. (Jeff Scovil photo/ Collectorâs................. 12 stunning specimens at the Pikes Peak Historical society museum sheet silicates grace |  | | Journal (article/letter/editorial) | | group symmetry C2/m. Average bond lengths for phlogopite are (Al,Si)-O 1.649,Mg-(O,F,OH) 2.064,innerK-O...rotation (o) and octahedral flattening (p). For phlogopite a : and 'y' - 58.95', predicted with distortions...sheet (1955) presented theoretical atomic coPabst phlogopite is larger than the regular Mg3 octaof ordinates...selected. The structural formula of Franklin phlogopite, calculated from a wet chemical analysis (seeTable...311OH6 6), which closely approximates the ideal phlogopite formula, KMgr AlSiBOlo(F,OH)r. Optical properties |  | | Journal (article/letter/editorial) | | Cornwall, England (Davidson, 1930), Leadville, Colorado (Laughlin and Behre, 1934) and the Cordillera...writer (1948) in the Eight Mile Park district of Colorado. Emmons (1940, pp. 23-24) related the zoning to...exclusive. Pikes Peak-Florissant District, Colorado. The Pikes Peak granite in parts of Douglas, El Paso, Teller... Eight Mile Park, Colorado(Heinrich, 1948).In the central parts of the Pikes Peak granite body occur...large projection from the roof of an underlying Pikes Peak granite batholith. These marginal pegmatites |  | | Journal (article/letter/editorial) | | Mineralogy and crystal chemistry of micas from the A-type El Portezuelo Granite and related pegmatites, Catamarca...University, Provo, Utah 84602, USA Corresponding author The A-type El Portezuelo Pluton (Catamarca, NW...depleted compared with the dioctahedral rims. Micas in El Portezuelo are the most important F-bearing species...very similar to that found at the Pikes Peak Batholith (Colorado USA) and is characteristic of NYF-type...from various occurrences in the Pikes Peak Batholith, central Colorado (USA), and confirmed that they are |  | | Journal (article/letter/editorial) | | scapolitisation of plagioclase and by (hornblende + phlogopite) uralitisation of ultramafic rocks. UREE mineralisations...scapolite, albitite and diopsidite (+ tourmaline, phlogopite, apatite) gangues of the shear zones. The main...CO2--Cl-rich + P, B, F fluids) because: 1. A bronzite--phlogopite--hornblende--scapolite (dipyre) paragenesis was...affinity between the diopside (+ hornblende, phlogopite, Ti-REE phases, scapolite) pegmatoids of Tete...see text for explanation. ~ I '~ ''i ZONE Peak of metamorphism -- closure of Rb-Sr isotopes in |  | | Journal (article/letter/editorial) | | (2000a), who characterized an annite from Pikes Peak (Colorado), and by Redhammer and Roth (2002), who...with that of OH-rich annite from the Pikes Peak complex, Colorado, USA; and (3) verify the inďŹuence of the...al., 2000). The annite from the Pikes Peak batholith (central Colorado) was used to assess the inďŹuence...Different counting times were employed, both at peak and background positions: 10 s for Na, 15 s for...130 mm6 0.105 mm60.015 mm) and annite from the Pikes Peak batholith (0.125 mm6 0.100 mm60.010 mm) were |  | Collins, Donley S., Cobban, Robert R., Foord, Eugene E., Murphy, Jack A. (1989) Bibliography for update and revision of U.S.G.S. Bulletin 1114, Minerals of Colorado -- a 100 year record, by Edwin B. Eckel, Part A - Paper copy --Bibliography data file disks. Open-File Report Vol. 1989 (89-206) US Geological Survey doi:10.3133/ofr89206a | Report (issue) | | Survey Denver, Colorado Department of Geology, Denver Museum of Natural History Denver, Colorado NOTE FOR...revision of U.S.G.S. Bulletin 1114, Minerals of Colorado A 100 year record, by Edwin B. Eckel By Donley...Prepared in cooperation with Friends of Mineralogy - Colorado Chaptar, and the Denver Museum of Natural History...references dealing with the mineralogy of the state of Colorado. It is part of a more than 10 year effort to update...and revise U.S.G.S. Bulletin 1114, Minerals of Colorado: A 100 year record, by Edwin B. Eckel (1961). |  | | Journal (issue) | | Cooper Nottingham, England Anthony R. Kampf L.A. County Mus. of Nat. Hist. Los Angeles, CA Joseph A. Mandarino...localities: The Cripple Creek Mining District, Colorado . . . . . . . . . . . . . . . . . . . . . . ....collection to the Natural History Museum of Los Angeles County. Julius Weber was well known in the mineral community...Department of the Natural History Museum of Los Angeles County has placed a high priority on building its micromount...collecting benitoite and neptuniteâ in San Benito County, California. Bryan Lees (current lessee of the |  | Breiter, Karel, VaĹkovĂĄ, Michaela, GaliovĂĄ, Michaela VaĹĄinovĂĄ, KorbelovĂĄ, Zuzana, KanickĂ˝, Viktor (2017) Lithium and trace-element concentrations in trioctahedral micas from granites of different geochemical types measured via laser ablation ICP-MS. Mineralogical Magazine, 81 (1) 15-33 doi:10.1180/minmag.2016.080.137 | Journal (article/letter/editorial) | | micas form a continuous evolutionary series from phlogopite to zinnwaldite. The phlogopites and biotites...Moldanubian basement during and shortly after the thermal peak of the Variscan orogeny (Gerdes et al., 1998). Muscovite...extremely Mg-rich rock composed of plagioclase and phlogopite with only subordinate K-feldspar and quartz crosscut...system UP 213 (New Wave Research, Inc., Fremont, CA, USA) operating at 213 nm and 18 LITHIUM AND TRACE ELEMENTS...Agilent 7500ce (Agilent Technologies, Santa Clara, CA, USA). The He carrier gas was mixed with argon make-up |  | | Journal (article/letter/editorial) | | Tree Root Pocket, Two Point claim, Pikes Peak batholith, Teller County. The Collectorâs Edge specimen, Jeff...Mail Stop 150, Box 25046 Federal Center Denver, Colorado 80225 pmodreski@usgs.gov C olorado is, of course...been written as guides to mineral collecting in Colorado. A classic, which went through three major editions...1951 version with a slightly different title), is Colorado Gem Trails and Mineral Guide, by Pearl (1951,...up-to-date guidebook to the stateâs minerals is Colorado Rockhounding, by Voynick (1994). Other published |  | Brigatti, Maria Franca, Lugli, Cristina, Poppi, Luciano, Foord, Eugene E., Kile, Daniel E. (2000) Crystal chemical variations in Li- and Fe-rich micas from Pikes Peak batholith (central Colorado) American Mineralogist, 85 (9) 1275-1286 doi:10.2138/am-2000-8-920 | Journal (article/letter/editorial) | | variations in Li- and Fe-rich micas from Pikes Peak batholith (central Colorado) MARIA FRANCA BRIGATTI,*,1 CRISTINA...Italy 2 United States Geological Survey, Denver, Colorado 80225, U.S.A. ABSTRACT The crystal structure...of the Precambrian, anorogenic Pikes Peak batholith, central Colorado, were determined by single-crystal...granitic units of the anorogenic Pikes Peak batholith (PPB), central Colorado. The PPB is a result of a complex...host granite through siderophyllite and ferroan phlogopite in graphic pegmatites, and finally to lithian |  | Pini, Stefano, Brigatti, Maria Franca, Affronte, Marco, Malferrari, Daniele, Marcelli, Augusto (2012) Magnetic behavior of trioctahedral micas with different octahedral Fe ordering. Physics and Chemistry of Minerals, 39 (8) 665-674 doi:10.1007/s00269-012-0520-1 | Journal (article/letter/editorial) | | magnetic structure of two samples, belonging to phlogopiteâannite [sample TK, chemical composition IV(Si2...by the dependency of the temperature giving the peak in the susceptibility curve from the frequency of...M1 = M2, M2 = M3 in trioctahedral micas of the phlogopiteâannite join or M1 = M2, M2 = M3 and M1 = M3,...magnetic behavior of two crystals belonging to phlogopiteâannite and polylithionite-siderophyllite join...lm spot size, and counting times of 10 s for both peak and background) was used to perform electron microprobe |  | | Journal (article/letter/editorial) | | North America; the rare earth pegmatitesb of Llano County (Texas), Minas Geraes(BraziI), Ytterby (Sweden)...A. L Genesis of mica pegmatite deposits, Latah County, Idaho: , Econ. Geology,vol. 28, no. 1, pp. 41-58...30Lovering, T. S., Magmatic chalcopyrite, Park County, Montana: Econ. Geology,vol 19, pp 636-640, 1924...Geology and mineral resources of eastern Cassia County, Idaho: Brill. Id.aho Bta. Mines ond.Geology,vol...NERALOGIST Rockport (Cape Ann), and western Hampden County. Types of pegmatite: Common granite and alkaline |  | | Journal (issue) | | Discovery of Gem-Grade Chrysocolla From Ontonagon County, Michigan Tom Rosemeyer datolite@charter.net This...for the week at the Minesota mine in Ontonagon County and mineral collect this area during part of the...Schoenfuss detecting al the Quincy mine, Houghton County, Michigan in August 2018. He has made several important...photo (7 August 2003). Only $30 - postpaid in the USA Available exclusively from: Excalibur Mineral Corporation...walk with a cane. " Figure 17. Vim¡, of Crystal Peak looking west. From Richard Pearl (1938), R. M. Pc |  | | Journal (issue) | | 178 by Donald D. Hogarth Minerals of the Pikeâs Peak Granite...........................................Uwharrie Wildlife M anagem ent A rea, M ontgom ery County, North Carolina. T he major crystal m easures 6...reward for me. KEITH PROCTOR 88 RAVEN HILLS CT. COLORADO SPRINGS, CO. 80919 PHONE: 303-598-8805 (Private...the Burlington mine near Jamestown, Boulder County, Colorado. We found perhaps a dozen good specimens,... MINERAL SPECIES: Country: State or Province: County: N earest Town: M ine Name: O ther Inform ation: |  | | Other Paper | | f11Ll, <:...Ofd';' UL e,( AMAZONITE FROM THE PIKES PEAK BATHOLITH by Eugen⢠E. Foord Stop 905 ¡.U.S...Gâ˘ologica.l Survey Deaver Fedoral Ceďż˝ter Lakewood, Colorado 80225 a..nd Robert F. Ma.rtin Dept. of Geologicďż˝l...hues and intensities, has been known from the Pikes Peak batholith for over 110 years. Strictly speaking...amazoni te. The first description of amazonite from Colorado appears to have been that of Hollister (1867)...development of the arďż˝a. ⢠Crystals and specimens of Colorado amazonite are among the finest ¡in the world1 |
|
