 | | Journal (article/letter/editorial) | | PETROLOGY AND MINERALOGY OF THE MOUNT ROSA AREA, EL PASO AND TELLER COUNTIES, COLORADO. II. PEGMATITESI EuceNB...in related alkalic granites in the Mount Rosa area, west of Colorado Springs. One is the older calc-alkalic...younger is the alkalic Mount Rosa type. The accessory assemblage of the Mount Rosa quartz-microcline-riebeckite...consists chiefly of radioactive zircon, fluorite, astrophyllite, thorite, and lesser amounts of pyrochlore,...determinations on zircons from pegmatites of the Mount Rosa type proved to be inconsistent, but ages determined |  | | Journal (article/letter/editorial) | | PETROLOGY AND MINERALOGY OF THE MOUNT ROSA AREA, EL PASO AND TELLER COUNTIES, COLORADO. I. THE GRANITES1 E. B...Michigan, Ann Arbor, Michigan. Assrnacr 'Ihe Mount Rosa area includes many small segregations and sill-like...pyrrhotite, with lesser monazite and bastnaesite. The Mount Rosa body, an alkalic riebeckite granite, forms a...variants of the Mount l{osa granite include xenoliths of Pikes Peak granite. The Mount Rosa granite contains...contains accessory astrophyllite, bastnaesite, and zircon lvith rare pyrochlore and monazite. Age determinations |  | | Journal (article/letter/editorial) | | northeasterly-trending continentul Figure 2. Geologic map of the Colorado Front Range showing the Precambrian metamorphic...Karistrom 1978; Lanthier 1978). Farther south in Colorado, sediments accumulated in decper-water rocks formed...Survey into “Early, Middle, and Late” Eras. In Colorado we because of the subsequent folding and overthrusting...subduction zone and possibly the creation Era in Colorado and Wyoming of a volcanic island arc. Carpenter...perhaps be the Phillipine island arc, and Jack Colorado show two major rock groups with different ages |  | Adams, John W., Botinelly, Theodore, Sharp, W. N., Robinson, and Keith (1974) Murataite, a new complex oxide from El Paso County, Colorado. American Mineralogist, 59 (1-2) 172-176 | Journal (article/letter/editorial) | | 172-176, 1974 Murataite,a New ComplexOxidefrom El Paso County,Golorado' JouN W. AoAms,TnsooonB BorrNrnv,...^lNoKsrrH RogrNsox U.S. GeologicalSuraey,Denuer, Colorado 80225 Absfact Murataite, a new complex oxide with...occurs in a pegmatite in the St. Peters Dome area, Colorado. The mineral is cubic, spaae group F432, Fm3m...mineralogy that is probably derived from the alkalic Mount Rosa Granite. Introduction Fragmentsof a black, submetallicmineral...accessoryminerals including albite, riebeckite, astrophyllite, zitcon, aegirine, rutile, thorite, pyrochlore |  | | 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...black riebeckite crystals, and bronze-colored astrophyllite blades are some of the other minerals from this |  | | 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...fayalite granites (the Mount Rosa complex). Both the Pikes Peak and the Mount Rosa granites are exposed |  | | 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...found in close association with riebeckite, astrophyllite, and quartz in a small pegmatite in the Pikes...Pikes Peak biotite granite batholith of Colorado. The St Peters Dome area of the batholith continues to |  | | Journal (article/letter/editorial) | | enrichment and usually con tain fluorite, astrophyllite, zircon, bastnaesite, pyrochlore, riebeckite...(Keyvy) Fluorite-zirconosilicate pegmatites (El Paso, Teller) alkaline granite Subalkaline-alkaline...platelets of biotite, muscovite, riebeckite, and astrophyllite. Here also, there are rare-earth silicates and...Windy Point, Colorado 26 22 26 10.3 22.6 54.8 17.5 29.1 7.0 + 0.1 0.1 Gold Camp, Colorado - 31.0...0 21.2 36.5 30.4 23.1 23.9 - El Paso, Colorado Teller, Colorado Biotite-riebeckite and biotite-fayalite |  | 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 gabbro—anorthosite—syenite—potassic 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...Desborough, G.A., 1975. The Pikes Peak batholith, Colorado Front Range, and a model for the origin of the...fayalite-bearing and fayalite-free biotite granite near Mount Rosa; major element chemistry of the batholith; comparisons...batholith lies in the southern Front Range of Colorado, west of Colorado Springs and south and southwest of Denver...also mapped the slightly younger, peralkaline Mount Rosa Granite (fig.2 of his paper). More recently, |  | | Journal (issue) | | Colorado Springs Mineralogical Society THE BULLETIN OF THE COLORADO SPRINGS MINERALOGICAL SOCIETY Published...(Kyle Atkinson) COLORADO SPRINGS MINERALOGICAL SOCIETY PO BOX 2 COLORADO SPRINGS, COLORADO 809801-0002 ...and Jewelry Show, Norris Penrose Event Center, Colorado Springs. Friday, June 10, Noon - 7:00 PM, Saturday...and Jewelry Show, Norris Penrose Event Center, Colorado Springs. Friday, June 10, Noon - 7:00 PM, Saturday...719-689-2675 or 719-651-2714. May 19: 7:00 PM, Colorado Scienti c Society meeting, all welcome, in person |  | Piilonen, Paula C., Rancourt, Denis G., Evans, R. James, Lalonde, Andr é E., McDonald, Andrew M., Shabani, Amir A.T. (2004) The relationships between crystal-chemical and hyperfine parameters in members of the astrophyllite-group: A combined57Fe Mossbauer spectroscopy and single-crystal X-ray diffraction study. European Journal of Mineralogy, 16 (6) 989-1002 doi:10.1127/0935-1221/2004/0016-0989 | Journal (article/letter/editorial) | | and hyperfine parameters in members of the astrophyllite-group: A combined 57Fe Mössbauer spectroscopy...suite of 22 members of the heterophyllosilicate astrophyllite-group from SiO2-over- and undersaturated igneous...thickness-corrected 57Fe Mössbauer spectra of astrophyllite-group minerals are characterized by two strong...first nearest-neighbour octahedra. In both astrophyllite-group minerals and trioctahedral micas, the...presence of the Dφ6 bridging octahedron in the astrophyllite structure imposes an additional distortion effect |  | 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). |  | Piilonen, P. C., Lalonde, A. E., McDonald, A. M., Gault, R. A., Larsen, A. O. (2003) Insights into Astrophyllite-group minerals. I. Nomenclature, composition and development of standardized general formula. The Canadian Mineralogist, 41 (1) 1-26 doi:10.2113/gscanmin.41.1.1 | Journal (article/letter/editorial) | | Mineralogist Vol. 41, pp. 1-26 (2003) INSIGHTS INTO ASTROPHYLLITE-GROUP MINERALS. I. NOMENCLATURE, COMPOSITION...ABSTRACT The composition of 135 samples of astrophyllite-group minerals from 15 localities has been established...this basis, formulas of the eight species of astrophyllite-group minerals have been redefined. Results...rocks, the dominant member of the group is astrophyllite sensu stricto, which occurs as a late-stage...more oxidizing conditions than those of the astrophyllite subgroup. Incorporation of Nb into the § Current |  | | Journal (issue) | | 2008 Table of Contents Collecting Minerals in Colorado - Peter Modreski ...........................Pg...Mining Update .......................... Pg. 20 Colorado Fossil Woods - Frank Daniels ...................on collecting minerals in Colorado by Pete Modreski, the informative Colorado petrified wood article by...the magazine so you get your very own copy! Colorado Minerals is the theme of the 2008 Denver Gem and...such as the Stove Mountain-Mount Rosa area noted for riebeckite, astrophyllite, zircon, and rare fluoride |  | | Book (edition) | | MILEAGE L OGS. REVISED EDITION Revised Edition, COLORADO GEM TRAILS AND MINERAL GUIDE HICllAHD :--1. PEARL...an extensive ¥em and mineral collecting tour 01 Colorado, revealing the interesting places where Nature...highways. Latest information is given on local tra\'el and collecting conditions and land ownership, so...Swallow, Publisher) 2679 South York Street Denver, Colorado 80210 - , =· - ·, BOOKS BY RICHARD M. PEARL...PEARL Exploring Rocks, Minerals, Fossils in Colorado America's Mountain: Pikes Peak and the Pikes Peak |  | | Journal (article/letter/editorial) | | MoNaZitE-(CE) FRoM RattlESNaKE MouNtaiN, StoNEhaM, oXFoRd CouNty, MaiNE. C. A. Francis and J. A. Mann. Maine Mineral...Miarolitic Pegmatites in the Stove Mountain Area, Colorado. S. L Hanson1 and G. Zito2. 1Adrian College, Geology...Mountain area, located about 5 miles southwest of Colorado Springs, is famous for a diverse suite of accessory...Granite (PPG) are intruded by the late-stage Mount Rosa Granite (MRG) and fayalite granite. Compositionally...pale bluegreen crystals in PPG pegmatites. Astrophyllite occurs in MRG pegmatites as bronze blades or |  | | Journal (issue) | | . . . . . . . . . . . . . . . . . . . (g) Astrophyllite . . . . . . . . . . . . . . . . . . . . . ....pulaskites); sphene; apati te; zircon; perovskite; astrophyllite (analysed); låvenite (analysed); eudialyte-eucolite...rocks, but is absent in the foyaite. g) Astrophyllite Astrophyllite is a relatively common constituent of...In some of the albite-rich, aplitic veins, astrophyllite constitutes as much as 10 per cent of the rocks...crystals up to 10 mm in length (Plate 4). The astrophyllite is strongly pleochroic in sections normal to |  | | Journal (article/letter/editorial) | | Two Point claim, Pikes Peak batholith, Teller County. The Collector’s Edge specimen, Jeff Scovil photo...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 state’s minerals is Colorado Rockhounding, by Voynick (1994). Other published |  | | Report (issue) | | Granite, California _ __ _ ___ Granodiorite, Johnston County, Okla_ __ 9 99 39 25.4 31 68 20 37 . . __________...______ ___ _____ Mount Tremont, N. H_ __ _ __ Hastingsite granite, Jackson Falls, N. EL _______ _ _ __..._____ Riebeckite granite, Brewster County, Tex. (!)_____ _____ Mount Rosa, Colo. (3) _ ___ __ _ __ Conway...Riebeckite rhyolite, Brewster, County Tex. (7) ______ __ _ _ Jeff Davis County, Tex. (2)_ _ _ _____ 61 30...Wheatland County, Mont. (3)______-________Marathon County, Wis. (3)_________.________ Fremont County, Colo |  | | 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 |  | | Journal (article/letter/editorial) | | contents in glassy rhyolites and rhyodacites from W USA range from 20--4,900 ppm, with a mean close to 500...rhyolite glasses to 1.1--1.4% in pantellerites of W USA. On crystallization, these glasses lose about half...showing F-rich and F-poor rhyolite provinces in W USA has been published by Coats et al. (1963). These...Riebeckite Arfvedsonite Fcrrohastingsite Spodumene Astrophyllite WShlerite Tourmaline Sphene Topaz Yttrobrithiolite...Creek, Colorado S Pohjanmaa, Finland Bernic Lake, Manitoba Ivigtut, Greenland Mt. Rosa, Colorado Miask |  | | 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 |  | | Book | | 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...Jean 133 Mount St H i l a i re 134 Rougemont 135 lberville 136 Mount Joh nson 137 Mou n t Yamaska 138 |  | | Show/Event (guide) | | historic Spinelli Prospect, Glastonbury, Hartford County, Connecticut - A. J. Albini & H. Moritz. 2:30...warwickite, and dissakisite-(Ce) from New York State, USA - M. V. Luoulescu. R. Rowe, D. G. Bailey, & M. Hawkins...crystals in the Lockport Dolostone, Cicero, Onondaga County, NY - S. C. Chamberlain. D. G. Bailey, & R. Lyons...Lyons. 3:00 The Lowville quartz occurrence, Lewis County, NY - M. Walter & S. C. Chamberlain. 3:15 Rh...Rhodonite-axinite-(Mn) vein assemblages, Franklin, New Jersey, USA. V. King & J. Nemetz. 3:30 Coffee Break 4 3:45 |  | | Journal (article/letter/editorial) | | orientation; and the riebeckite from St. Peters Dome, Colorado, early descriptions of which [optic plane parallel...tetrahedrally coordinated A1Iv. ( o H ) = O H § 2 4 7 el. FERROGLAUCOPHAN E NQ 2 Fe3"Ar2 Si8022 (OH)2 69...of 7) 9.73 17.95 5.30 103.3~ 9.47 901 -- E//ect el Cation Substitutions on Cell Parameters Inspection...COL~N/~, 1%. G.: 1%iebeckite from St. Peters Dome, Colorado. Bull. Geol. Soc. Am. 62, 1517 (1951) (Abst.)...Petrology and mineralogy of the Mount Rosa Area, E1 Paso and Teller Counties, Colorado. II. Pegmatites. Am. Mineralogist |
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Rosa No. 1 trench, Mount Rosa, El Paso County, Colorado, USA