 | | Journal (article/letter/editorial) | | SCHEELITE IN THE PRECAMBRIAN OGDEN GNEISSES OF COLORADO TWETO CONTENTS PAGE Abstract ................Precambrian age has been found at several localities in Colorado and Wyoming in recent years. Most of it is disseminatedin...Geological Survey. SCHEELITE IN GNEISSES OF COLORADO I NTRODUCTIO 1407 N ß SCaEEL•TEwas discoveredin...occurrenceat many localitiesin the Precambrianterranesof Colorado and part of Wyoming, show that during the Precambrian...non-graniticportion of the exposedPrecambrianterranesof Colorado,and othersare knownin Wyoming. Severalof the depositshave |  | | 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 |  | | 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 |  | | Journal (issue) | | Colorado Springs Mineralogical Society Founded in 1936 March 2015 PICK&PACK Vol 55 ...... Number 2 ...is on (Continued on page 3) COLORADO PO&BOX 2 COLORADO SPRINGS, COLORADO 80901-0002 March 2015 SPRINGS...Senior Center is located at 1514 North Hancock in Colorado Springs. For more information on any of the sub-groups...Monecke, Colorado School of Mines; at the monthly meeting of DREGS, Berthoud Hall Room 241, Colorado School...by Daniel Kile; at the bimonthly meeting of the Colorado Chapter, Friends of Mineralogy; Denver Museum |  | | Journal (article/letter/editorial) | | Museum of Nature and Science 2001 Colorado Boulevard Denver, Colorado 80205-5798 jmurphy @ dmns.org PETER...Survey MS 150, Box 25046 Federal Center Denver, Colorado 80225-0046 pmodresk @ usgs.gov Unless otherwise...to 2000) J oin us for a gemstone tour around Colorado! Our field trip takes us from east to west in...in the same way you may have toured through Colorado on a mineral collecting trip. This route, from the...gemstones are known to occur. We cannot discuss every Colorado gemstone occurrence; rather, this is a general |  | | Journal (article/letter/editorial) | | His most recent article for the magazine was “Colorado Quartz: Occurrence and Discovery” (September/October... Figure 3: Almandine, 3 cm. Avondale, Delaware County, Pennsylvania. John Medici specimen and photo....used for a pale green mixture of grossular plus vesuvianite. Californite is also, more commonly, used simply...simply as a varietal name for pale green, massive vesuvianite without garnet (Embry and Fuller 1980). Cinnamon...uvarovite crystal, 0.8 mm, near Jacksonville, Tuolumne County, California. Dan Behnke specimen tahedral crystals |  | | Book (edition) | | FLUORITE QUARTZ CRYSTALS SPINEL STAUROLITE •^^ VESUVIANITE WILLEMITE ZIRCON CRYSTALS Crystal forms 5...mine, Racooche Valley, White Co. 1866 Vs White County Daniel Light form, % mi. NE Less than 1887 ...Alabama has yielded a 4i%4 carat diamond from Shelby County, 30 miles south of Birmingham, found about 1900...Siding in St. Clair County, 20 miles northeast of Bir- mingham. One found in Lee County in 1901 weighs 4^...have a cornfield at Pounding Mill, Tazewell County, Va. A 3 carat stone, bought by a Knoxville |  | | Journal (issue) | | - - - - - - - - - - - Mineral Collections 1n Colorado A Supplement to The Mineralogical Record November-December..."Smithsonian packet," Smoky Hawk claim, Florissant, Colorado. Collected in 2008; Dorris Family collection;...certificates for mines in the Cripple Creek District, Colorado, in 1898 and 1901. Sponsorship: This special supplement...Collecting in Colorado The Collections: Mel & Pam Bersch Ryan Bowling Ralph Clark Colorado School of Mines...Thompson George Witters Martin Zinn III and Colorado in the :Mineralogical Record Supplement to The |  | | Report (volume) | | ............................................. Colorado.................................................especially from those of Arkansas, California, Colorado, New Mexico, Oregon, South Dakota, Tennessee,...minerals and rocks, their occurrence and uses: Colorado State Geol. Survey Bull. 6, 1913. 8 USEFUL...See Bauxite and Halloysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton; |  | | Report (volume) | | A. F. Rogers, Stanford University, Palo Alto. Colorado.........Prof. R. D. George, Boulder. Connecticut...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities: Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20, Pv. 7 E.; Jefferson...Jefferson County, at Elyton; Lee County, at Chewacla lime works; St. Clair County, at Gfeensport; Shelby |  | | Book (volume) | | SOUTHWESTERN QUADRANT Arizona, Arkansas, California, Colorado, Louisiana, Nevada, New Mexico, Oklahoma, Texas...Southwestern Quadrant Arizoni, Arkansas, California, Colorado, Louisicna, Nevada, New Mexico, Oklahoma, Texas...Location Numbers Arizona Arkansas California Colorado 258 Louis B30 ana HOW TO USE THIS BOOK...volumes, through very precise directions and accurate county maps, to get you to the best and most accessible...for the county in which it is located. This site number also appears under the given county in the text |  | | Book | | to be minerals. Microcline, Crystal Peak, Colorado, USA * 12 x 9x 5 om MINERALS: PRODUCTS OF A CHANGING...zeolites. Calcite (septarian nodule), San Juan County, Utah, USA * 18 x 24x Bem 14 | MINERALS: PRODUCTS...Madagascar e(2x23x3em Quartz, Mount Ida, Arkansas, USA ° 14x 15 x 10 cm Corundum, Mozambique * 17 x 11...typical crystal shape. Goethite, Tintic, Utah, USA * 16.5 x 3.5 x 2.5 om Drusy These minerals have...linarite, Bingham, New Mexico, USA * 9x 75 x 2.cm Arborescent copper, Michigan, USA * 35 x 8 x 1 cm Radiating |  | | Journal (issue) | | and D.D. Hogarth Diamond collecting in northern Colorado ............................................205...Collins The Lake Clear-Kuehl Lake area, Renfrew County, Ontario.........................................descloizite from the Chalk Mountain mine, Churchill County, Nevada ......................................... Bostwick Mercury amidonitrate crystals from Colorado ....................................233 Printed... Concession VI, North Burgess Township, Lanark County. Perthite was the name given by Thomas Thomson |  | | Journal (issue) | | Julius Weber Mamaroneck, New York COLORADO ISSUE #2 Articles Colorado locality index.............................. 323 by B. L. Muntyan What’s new in Colorado minerals? ......................................339 by M. I. Jacobson The San Juan Mountains of Colorado ..................................349 by J. A...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 |  | | Book (volume) | | 56 ct), Sweet Home Mine, Colorado; colorless scheelite (19.66 ct), Kern County, California; octagonal...Vivid blue matched benitoite gems from San Benito County, California, consisting of 52 benitoites and 75...Cantlin, Ellis, [D; Jeannette B. Carillo, Gem Center USA, EI Paso, TX; Gary Christopher, The Prospectors Cache...James D. Lindberg, Las Cruces, NM; Jack Lowell, Colorado Gem & Mineral Co., Tempe, AZ; Steven & Lorna Lukinuk...Resources, Vancouver, BC; Barbara L. Muntyan, Ouray County Historical Society, Ouray, CO; Merrill O. Murphy |  | | Book | | contact-metasomatic deposits—fluorite, magnetite, vesuvianite, etc. In the hydrothermal-pneumatolytic deposits...and the hydroxyl (SiO,]*- <— [BeO.(F,OH)2]*— vesuvianite, micas III. Heterovalent diadochic substitutions...type of replacement is found in the mica and vesuvianite groups, some of whose members have abnormally...content of BeO in the most abundant silicate, vesuvianite, rises to 1 percent. Investigations of helvite...referred to below. The Old Mike pegmatite, Custer County, South Dakota, U.S.A. (Cameron et al., 1951) presents |  | | 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 |  | | Book (volume) | | ...........................................59 Colorado ...............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ......................................................................22 Arizona County Map ................................................................................49 Arkansas County Map .......................................... |  | | 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...Litchfield County. Ilmenite masses and crystals from somewhere near Washington, Litchfield County, were described...Lake Road occurrence, Faraday Township, Hastings County. In fall 1994, Dan and Shelley Lambert extracted...Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's finest ilmenite specimens |  | | Journal (issue) | | last May in Denver. The theme of the show was “ Colorado Gold and Silver M ining,” and there was a large... Mira Loma, Cali- RED CLOUD MINE SITE, YU M A COUNTY. ARIZONA WULFENITE, Red Ckud M m 7 JTQ MINERAL...M inerals, Collections Golden Minerals 296 Colorado M ineral & Fossil Show Moly B • Caviano Ernest...labels, polybags, vials. WOW! 2nd occurrence (1st in USA) of this rare sodium phosphomolybdate! Rich yellow...hardware 196 Beechwood Ave. Bogota, N .J. 07603 USA (201) 487-3254 The Mineralogical Record , volume |  | | Journal (issue) | | 1/28/14 10:52 AM For the Collector and Crafter COLORADO MINERAL & FOSSIL SHOW - SPRING APRIL 18 - 20,...CALIFORNIA: Annual show; Monrovia Rockhounds; LA County Arboretum, 301 S. Baldwin Ave.; Sat. 9-4:30, Sun...Annual show; Ventura Gem & Mineral Society; Ventura County Fairgrounds; 10 W. Harbor Blvd.; Sat. 10-5, Sun...Web site: www.sgams.com 7-9—NORTH APPLE VALLEY (COUNTY), CALIFORNIA: 38th Annual Outdoor Tailgate; Victor...Wholesale and retail show; Gem Faire Inc.; Alameda County Fairgrounds; 4501 Pleasanton Ave.; Fri. 12-6, Sat |  | | | | world-renowned gem and mineral collection at Los Angeles County Museum of Natural History since 1980. Joan Kaylor...Oxygen reacts with the iron in rocks to pro- Colorado Plateau in Arizona, home WEATHERING Rocks formed...fossils. Those shown here were uncovered in Franklin County, Indiana, in sedimentary rock formed some 440 million...in the The Grand Canyon was probably when the Colorado River cut jh sedimentary sequence where the fossil...after Vishnu’s Temple, a rock formation on the Colorado River. Vishnu is a Hindu god. morphic rock, and |  | | Book (edition) | | MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...Maryland; Professor Richard Pearl of Colorado Springs, Colorado; and Professor Jack Hanahan of Belmont...LAZULITE PERIDOT PHENACITE QUARTZ CRYSTALS V^v VESUVIANITE WILLEMITE ZIRCON CRYSTALS HOW TO IDENTIFY...gems, garnet, jade, kyanite, lapis lazuli, and vesuvianite. In such places heat and mineralizing solutions...Center, Geological Survey, Federal Center, Denver, Colorado 80225. Index charts, provided free by the Survey |  | | Book (volume) | | ...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |  | | Book (volume) | | ...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |
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