 | | 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...Stove Mountain, Colorado. Figure 2 (center spread, inset). An outcrop of Pikes Peak Granite (PPG), fayalite |  | | Journal (article/letter/editorial) | | MIAROLITIC CAVITY IN CHEYENNE CANYON, EL PASO COUNTY, COLORADO GARY ZITO Colorado School of Mines, Metallurgical...Engineering Department, 1500 Illinois St., Golden, Colorado 80401, U.S.A. SARAH L. HANSON§ Adrian College...cavity in a pegmatite in Cheyenne Canyon, El Paso Co., Colorado has an unusual mineral assemblage that includes...a pegmatite pocket in Cheyenne Canyon, El Paso County, Colorado. This location is about 2 km north of...of ïŹne- to medium-grained biotite granite and includes the Pikes Peak granite as well as several late-stage |  | | Journal (article/letter/editorial) | | AND QUARTZ DIKES OF MOUNT ROSA COMPLEX AREA, COLORADO FRONT RANGE, COLORADO, USA SARAH L. HANSON§ Adrian...Madison Street, Adrian, Michigan 49221, USA, GARY ZITO Colorado School of Mines, Metallurgical and Materials...Golden, Colorado 80401, USA Keywords: pegmatite, beryllium mineralization, Stove Mountain, Mount Rosa, hydrothermal...bertrandite. INTRODUCTION The Mount Rosa Complex (MRC), located in the Colorado Front Range, extends from...from St. Peters Dome in the south to Mount Buckhorn to the north and east of Cheyenne Canyon. The complex |  | | Journal (article/letter/editorial) | | IVAN JACOBSON 1714 S. Clarkson Street Denver, Colorado 80210 markivanjacobson@gmail.com No pegmatite...5.7 cm, from the Conway Granite, near Red Stone quarry, Conway, Carroll County, New Hampshire. Henry Minot...at 08:14 13 August 2013 2 Locality Parental Granite Pegmatite Class Mineral associates of significance...counties, CO, USA Crystal ParkâBear Creek, El Paso County, CO, USA Pikes Peak Granite NYF Miarolitic...Miarolitic topaz, amazonite, phenakite Pikes Peak Granite NYF Miarolitic topaz, amazonite, phenakite References |  | | Journal (article/letter/editorial) | | Denver, Colorado 80225, USA AND JOHN W . ADAMS 705 Garland Street, Lakewood, Colorado 80215, USA A B S...associated with murataite at the St Peters Dome area, Colorado. The Znand Y-group-bearing senaite is uranium-free...Y)4(Zn,Fe+2)3(Ti,Nb)6Ols(F,OH), from E1 Paso County, Colorado (Adams et al., 1974), mention was made of...small pegmatite in the Pikes Peak biotite granite batholith of Colorado. The St Peters Dome area of the...part of the biotite granite phase, was probably modified by the Mount Rosa alkali granite unit, which |  | Barker, F., Wones, D.R., Sharp, W.N., Desborough, G.A. (1975) The Pikes Peak batholith, Colorado front range, and a model for the origin of the gabbroâanorthositeâsyeniteâpotassic granite suite. Precambrian Research, 2 (2) 97-160 doi:10.1016/0301-9268(75)90001-7 | Journal (article/letter/editorial) | | in The Netherlands THE PIKES PEAK BATHOLITH, COLORADO FRONT RANGE, AND A MODEL FOR THE ORIGIN OF THE...THE GABBRO--ANORTHOSITE-SYENITE--POTASSIC GRANITE SUITE F. BARKER', D.R. WONES 2, W.N. SHARP ~ and G.A...Desborough, G.A., 1975. The Pikes Peak batholith, Colorado Front Range, and a model for the origin of the...the gabbro--anorthosite syenite--potassic granite suite. Precambrian Res., 2: 97--160. This study of the...fayalite-bearing and fayalite-free biotite granite near Mount Rosa; major element chemistry of the batholith; |  | | Journal (article/letter/editorial) | | Accepted Manuscript Pikes Peak batholith (Colorado, USA) revisited: A SIMS and LA-ICP-MS study of zircon...Blichert-Toft, M.F. Fahnestock, Pikes Peak batholith (Colorado, USA) revisited: A SIMS and LA-ICP-MS study of zircon...the journal pertain. Pikes Peak batholith (Colorado, USA) revisited: A SIMS and LA-ICP-MS study of zircon... James Hall, Durham, New Hampshire 03824-3589, USA 2 Laboratoire de GĂ©ologie de Lyon, Ecole Normale...Mesoproterozoic Pikes Peak batholith (PPB) in central Colorado. Despite having been studied for more than a century |  | | Report (issue) | | Basement in Colorado GEOLOGIC A I, Rock Units of the Precambrian Basement in Colorado By OGDEN TWETO...TWETO GEOLOGY OF THE PRECAMBRIAN BASEMENT IN COLORADO U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1321-A...igneous rocks in outcrop and the buried basement in Colorado UNITED STATES GOVERNMENT PRINTING OFFICE...1912-1983 Rock units of the Precambrian basement in Colorado. (Geological Survey Professional Paper ; 1321-A)...Geology, Stratigraphic Pre-Cambrian. 2. Geology Colorado. QE653.T9 1986 551.7'1'09788 I. Title. For sale |  | | Report (volume) | | in Colorado GEOLOGICAL SURVEY BULLETIN 1422-D Nomenclature of Precambrian Rocks in Colorado By...Ogden, 1912Nomenclature of Precambrian rocks in Colorado. (Contributions to stratigraphy) (Geological Survey...Pre-Cambrian. 2. Geology, Stratigraphic Nonmenclature Colorado. I. Title. II. Series. HI. Series: United States... ILLUSTRATION Page FIGURE 1. Map of parts of Colorado and adjoining States showing distribution of Precambrian...1. Classification of Precambrian rock units in Colorado............................. D4 in CONTRIBUTIONS |  | | Journal (article/letter/editorial) | | Department, 110 S. Madison St., Adrian, Michigan 49221, USA ABSTRACT Pegmatites containing rare elements can...family and granite tectonic type were re-examined using a large data set of published granite compositions...regard to the orogenic settings of the source granite origin. Pearce trace-element discrimination diagrams...diagrams for these granites suggest that LCT granite-pegmatite systems originate in orogenic and perhaps...in the granite from each tectonic setting are reflected in the pegmatite mineralogy. Granite that is |  | | Journal (article/letter/editorial) | | POTASSIUM-ARGON AGES IN THE PRECAMBRIAN BASEMENT OF COLORADO BY C. E. GIFFIN AND J. L. KULP Earlier geochronometric...Kulp (in press). The MILES 0 25 50 75 lOOl âą GRANITE a PEGMATITE A METAMORPHIC ROCKS [23 PRECAMBRIAN...PRECAMBRIAN OUTCROP FIGURE 1.âGENERALIZED MAP OF COLORADO AND SOUTHEASTERN WYOMING in southern Montana and...Ap = 4.72 X Range of southern Wyoming through Colorado 10-10 yrr1 and Ae = 0.584 X lO"10 yrr1. All and...ratio, it Measurements on mica and zircon from granite seems possible that in extreme cases some loss |  | | Journal (article/letter/editorial) | | 19: 1-42. Proposed average fluorine contents for granite (about 800 ppm) have limited value as contents...and vary greatly within and between different granite types. F may be either concentrated or released...Li--F granites and ongonite dykes, and in alkali granite pegmatites. F-rich fluid inclusions from the Volhynia...in calc-alkaline granites is usually located in biotite, with lesser amounts in hornblende, muscovite,...(apogranites). Geothermometry based on F / O H ratios of biotite seems invalid for granitic series. The stability |  | | Report (issue) | | Rocks Northeast of Steamboat Springs, Park Range, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 1041...Rocks Northeast of Steamboat Springs, Park Range, Colorado By GEORGE L. SNYDER with a section on GEOGHRONOLOGY...unstudied area of Colorado and comparison with related rocks elsewhere in Colorado and Wyoming UNITED...rocks northeast of Steamboat Springs, Park Range, Colorado. (Geological Survey Professional Paper 1041) Bibliography:...Docs, no.: I 19.16:1041 1. Intrusions (Geology) Colorado Steamboat Springs region. 2. Geology, Stratigraphic |  | | Journal (article/letter/editorial) | | ROBERT E. ZARTMAN U.S. Geological Survey, Denver, Colorado 80225 and G. J. WASSERBUR~ California Institute...yield model ages close to the radiometric ages. Granite, pegmatite, and rhyolite from within the Grenville...age-equivalent rocks of New York, Virginia, Texas, and Colorado and granophyrio units associated with the Duluth...from Quebec, in a rapakivi granite from southern Nevada, and in a small granite stock from Mellen, Wisconsin...These occurrences all involve small intrusions of granite which lie near considerably older areas of basement |  | | Report (issue) | | rocks_________________ Albitized and greisenized granitic rocks. Granite pegmatites._________________ Nepheline syenite...determinations of niobium and tantalum in standard granite G-l and standard diabase W-l __ Average niobium...U.S.S.R_________-__ Tantalum in hornblende and biotite from igneous rocks of the southern California ...mafic and ultramafic rocks, and sodic and alkalic granite. Tantalum generally accompanies niobium with an...commonly contain niobium and tantalum in accessory biotite, whereas allanite-bearing granites containing sphene |  | | Book | | and/ or amphibole) syenite, quartz syenite and granite, to gether with peralkaline trachyte, comendite...and ap praisal for phosphate and vermic u l i te el ewhere. A nu mber of occu rrences in Ontario is described...Lake '1 1 La t Lake 12 Atlin 13 Atsutla Range 14 Mount Edziza 15 Galore Creek 16 Lonnie 17 Goosly Lake...i ver 30 Mount Copeland 31 Trident Mountain 32 K i n basket Lake 33 Mount Laussedat 34 Mount H unter 35...Quarry Montreal 127 Mount Royal 128 Brossard 129 Masson Street 130 St-Amable 1 3 1 Mount Bruno 1 32 St Jean |  | | Report (issue) | | Crystalline Rocks, Park and Jefferson Counties, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 608-B General...Crystalline Rocks, Park and Jefferson Counties, Colorado By C. C. HAWLEY and R. A. WOBUS GEOLOGY AND ORE...TARRYALL REGION, PARK AND JEFFERSON COUNTIES, COLORADO GEOLOGICAL SURVEY PROFESSIONAL PAPER 608-B...phases of the final intrusion, the Pikes Peak Granite, were accompanied by beryllium-bearing greisens...Tarryall region, Park and Jefferson Counties, Colorado) (Geological Survey Professional Paper 608-B) |  | Marmo, V., HoffrĂ©n, K., Hytönen, K., Kallio, P., Lindholm, O., Siivola, J. (1966) On the granites of HonkamĂ€ki and OtanmĂ€ki, Finland, with special reference to the mineralogy of accessories. Bulletin de la Commission GĂ©ologique de Finlande Vol. 221. Geological Survey of Finland | Journal (volume) | | The heavy accessory minerals of the HonkamĂ€ki granite ................... On the distribution of accessory.............................. On the age of the granite of HonkamĂ€ki .................... .... . ........geological structure, there occurs a gneissose granite which is fine- to medium-grained, principaHy aplitic...limited b y the amphibolites consists of gneissose granite. Furthermore, most of the area in question is covered...the south of the church of Vuolijoki. The same granite occurs likewise as weH defined veins and dykes |  | | Journal (article/letter/editorial) | | constant association of granitic rocks (adamellite, granite, quartz mangerite, charnockite), usually showing...intrusive granitic magraatism, including rapakivi granite, in the St Francois Mountains, Missouri (Bickford...Mose, 1975); Silver Plume and Sherman Granites of Colorado (Peterman and Hedge, 1968); the Laramie anorthosite--syenite...Hill Granite, and Bickford and Mose (1975) report rapakivi texture in the Graniteville Granite. A compilation...although they are common in the most abundant granite variety in the Wiborg massif (Simonen and Vorma |  | | Report (volume) | | . 234 " y { " ,-t .. .~,:",. I " , COLORADO "or.! _ +, (~ STATE OF .~ :'(' COL~ADO /... BULLETIN 40 RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BlaLlllGRAPHY by James L. Nelson-Moore,...Energy COLORADO GEOLOGICAL SURVEY DEPARTMENT OF NATURAL RESUURCES STATE OF COLORADO DENVER, COLORADO 1978...ete 11 st r ng of rad i aaet 1ve occurrences 1n Colorado, with a comprehensive blbi iography and bibliographic...association of radium, uranium. and vanadIum on the Colorado Plateau sparked several periods of exploratIon |  | | Report (volume) | | occurs; and the Colorado group or shale, used widely in Canada, is under the State of Colorado. Not all geologic...Valley, in Eodgers, John, ed., El sistema Cdmbrico, su paleogeografia y el problema de su base, tomo 2:...(Alberta) Albion glacial stage 1 (Colorado) Alma glacial substage 2 (Colorado) INDEX TO THE GEOLOGIC NAMES...substage 2 (Colorado) Angel Lake glacial stage 1 (Nevada) fAnimas interglacial epoch ! (Colorado) Arapaho...Arapaho glacial stage 2 (Colorado) Bigelow glacial substage 2 (Colorado) fBighorn glacial epoch J (Wyoming) |  | | Report (volume) | | sandstone. Permian : Central northern Oklahoma (Bay County). C. N. Gould, 1900 (Kans. Univ. Quart., vol. 9...dolomite. Permian : Central northern Texas (Fisher County). M. G. Cheney, 1929 (Univ. Tex. Bull. 2913, p... Pennsylvanian : Northwestern Colorado (northern part of Eagle County). R. Roth, 1930 (A. A. P. G. Bull...011 ft. It rests on undiff. Camb. or Ord. and granite. R. Roth, 1934 (A. A. P. G. Bull., vol. 18, No...New Mexico (San Juan Basin) and south western Colorado. J. B. Reeside, Jr. 1924 (U. S. G. S. P. P. 134 |  | | Report (issue) | | STUDIES Petrology and petrography Page Copper in biotite from igneous rocks in southern Arizona as an ore...zeolitization associated with hot springs in central Colorado, by W. N. Sharp____________________________ Mafic...Mafic and ultramafic rocks from a layered pluton at Mount Fairweather, Alaska, by George Plafker and E. M...in the Tertiary San Luis-Upper Arkansas graben, Colorado, by R. E. Van Alstine_____ 43 Geophysics Calculated...logs, Nevada Test Site and Hot Creek Valley, Nyo County, Nev., by D. L. HealeY------------------------ | | | Report (volume) | | 5 in., inch or inches. Circ., Circular. Co., County or Company. Indus., Industrial. Inst., Institute...of Saluda River. Rocks consist of gneissoids, granite, syenite, quartz, mica and hornblende schists and...Pre-Cambrian : Central southern Virginia (Mecklenburg County). F. B. Laney, 1917 (Va. Geol. Surv. Bull. 14,...(5) massive *to laminated arkosite with sporadic granite pebbles, underlain by massive arkosite with pebbles...exposures in Abrigo Canyon, 3 mi. SW. of Bisbee. In Mount Martin section upper limit of Abrigo fm. is defined |  | | Report (issue) | | Beryllium Area, Park and Jefferson t:-1 Counties, Colorado g ~ s:p ~ I> li:tl ~ GEOLOGICAL SURVEY PROFESSIONAL...Flats) Beryllium Area, Park and Jefferson Counties, Colorado By C. C. HAWLEY GEOLOGY AND ORE DEPOSITS OF THE...SOUTHERN TARRYALL REGION PARK AND JEFFERSON COUNTIES, COLORADO GEOLOGICAL SURVEY PROFESSIONAL PAPER 608-A A...association with the late Precambrian Redskin Granite UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...______________ _ Silver Plume(?) Granite ____________________ _ Pikes Peak Granite and associated rocks _____ |
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