 | | Report (issue) | | Associated Carbonatites of the Gem Park Complex, Custer and Fremont Counties, Colorado GEOLOGICAL SURVEY PROFESSIONAL...ASSOCIATED CARBONATITES OF THE GEM PARK COMPLEX, CUSTER AND FREMONT COUNTIES, COLORADO S a n g re d a C r...,,'*^ ,,' -aCr* Gem Park, Colo. View northwestward from Democratic Mounta GEM MOUNTAIN Sawatch Range...-Cbtrfplex ving pyroxenite and gabbro of the Gem Park Complex. -« "*» +** 4ifa. Mafic-Ultramafic Igneous...Associated Carbonatites of the Gem Park Complex, Custer and Fremont Counties, Colorado By RAYMOND L. PARKER and |  | | Report (issue) | | 14 1. 2. 3. 4. 5. Asbestos ore Lead ore, Batmat mine, N. Y. Chromite-chromium ore, Washington Zinc ore...Peninsula, Mich. 10. Porphyry molybdenum ore, Colorado 11. Zinc ore, Edwards, N.Y. 12. Manganese nodules...Elements in the Wet Mountains Area, Fremont and Ouster Counties, Colorado By THEODORE J. ARMBRUSTMACHER GEOLOGY...elements in the Wet Mountains area, Fremont and Custer Counties, Colorado. (Geology and resources of thorium...16:1049-F 1. Thorium ores—Colorado—Wet Mountains Region. 2. Earths, Rare—Colorado—Wet Mountains Region. 3 |  | | Report (issue) | | deposits in the Wet Mountains area, Fremont and Custer Counties, Colorado By T. J. Armbrustmacher Open-File... 2.--Carbonatite dike cropping out at the Miles mine 5 3.--Photomicrograph of carbonatite from same...deposits in the Wet Mountains area, Fremont and Custer Counties, Colorado 1 By T. J. Armbrustmacher Introduction...of the Wet Mountains of south-central Colorado in southern Fremont and Custer Counties. The thorium deposits...Arkansas River on the north, the Custer-Huerfano County line on the south, the Use fault on the east, and |  | | Journal (article/letter/editorial) | | Silicates (part three) (concluded) TOURMALINE is a complex silicate of boron and aluminum with either magnesium...and the green or Brazilian emerald variety. The gem tourmalines are found most commonly in pockets or...near Bedford and Overlook, New York; near Golden, Colorado and elsewhere. A fine crystal measuring 4x4x10...tourmaline crystal was noted in the Luella mine near Avon, Latah county, Idaho, which measured 3x3x8 feet. Other...Dakota. A black crystal from Micaville, Randolph county, Alabama, was 10 inches in diameter and from 3 |  | | 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...version with a slightly different title), is Colorado Gem Trails and Mineral Guide, by Pearl (1951, 1958...up-to-date guidebook to the state’s minerals is Colorado Rockhounding, by Voynick (1994). Other published |  | | Journal (article/letter/editorial) | | Canada;Iron Hill, Powderhorn district, Colorado;and covered. GemPark,Colorado(Fig. 1). Althoughthe four study...Similarly, the HOH-bending vibration district,Colorado;O -- Oka Carbonatite,Quebec,Canada. mode,coupledwith...Procedures IH = Iron Hill, Powderhorn district, Colorado; GP = Gem Park 1984). Manyrock-forming mineralshavebroadabsorption...Fe+2andFe+3(HuntandSalisbury, 1970). Geological Survey, Denver, Colorado; and from Electronicabsorption processes alsoare... zircon Albite, microcline, richteritc (?), phlogopite,quartz, zircon, rutfie, allanitc(Ce, Ca, Y)• |  | | Journal (article/letter/editorial) | | ites fromthe Wet MountainsArea, Fremont and Custer Counties,Colorado TnEOr)ORE J. ARMBRUSTMACHER Abstract...with alkalic rocks of the McClure Mountain and Gem Park Complexes, andthecomplex at DemocratCreek,canbeclassified...hornblendegneisses, associated with and cuttingrocksof the Gem Park and amphibolites--andPrecambrianintrusivegran...Subsequentwork at the Gem Plumeage (1.45 b.y.) (Taylor et al., 1975a,b) (Fig. Park Complex(Parker and Sharp...mappedwithin the Iron Mountainmafic- Complex,the Gem Park Complex,and the complex ultramaficportion of the McClure |  | | Report (issue) | | in the Wet Mountains Area, Custer and Fremont Counties, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER...in the Wet Mountains Area, Custer and Fremont Counties, Colorado By THEODORE J. ARMBRUSTMACHER GEOLOGICAL...of rocks of the McClure Mountain Complex, Gem Park Complex, and complex at Democrat Creek and associated...in the Wet Mountains area, Custer and Fremont Counties, Colorado. (Geological Survey Professional Paper...16:1269 1. Alkalic igneous rocks. 2. Petrology Colorado Wet Mountains. I. Title. II. Series. QE462.A4A76 |  | | Journal (issue) | | DeMark Malachite pseudomorphs from the Sir Dominick mine, Arkaroola, South Australia ......................... 73 by B. M. England Uraninite from Gatineau Park, Q uebec..........................................Arizona 85740 COVER: GOLD from the Eureka mine, Tuolumne County, California. This specimen, about 7 inches...subscribers per 100,000 population), followed closely by Colorado (12.4), then Nevada (9.0), New Hampshire (6.1)...mining activity in the future. The Red Cloud copper mine is on the west side of the forest road and was originally |  | | Journal (issue) | | England Richard C. Era U.S. Geological Survey Menlo Park, CA Donald R. Peacor University of Michigan Ann...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..................................................... 483 by M. Germine The Gardiner Complex, a new locality in Greenland ....................chalcopyrite, from the Sweetwater mine, Ellington, Reynolds County, Missouri. Collection of Maudine and |  | | Journal (issue) | | STAINLESS STEEL CABBING UNIT This machine is made in the USA for Kingsley North. Features an all stainless steel...Peak Historical Society Museum, in Florissant, Colorado, include the area’s minerals. This unusual specimen...with fluorite is from a claim near Crystal Park, Colorado, at the base of Pikes Peak. (Jeff Scovil photo/...society museum sheet silicates grace mineral and gem specimens by Andy Weinzapfel by Bob Jones The...crystal skulls by Bob Jones regular columns Rock & Gem Kids .......................................... 34 |  | | Report (issue) | | Snowy Range, Albany and Carbon Countie.. Red Feather mine in the foreground . Precambrian Medicine Peak quartzite..."Yellowstone National Park of Northwestern Wyoming." should read Yellowstone Park of northwestern Wroming........................ ~ ................. 28 Phlogopite ................................................................... He)J's Ha1f·Acre, Natrona County .................................................Volcanic conglomerates in the Absaroka Mountains. Park County_ Sandstone_............................. |  | | Journal (article/letter/editorial) | | JanuaryFebruary: Ferro-axinite on calcite, Dodo mine, Puiva Mountain, KhantyMansi Avt. Okrug, Tyumen’...Pyromorphite on quartz, Manhan River mine, Easthampton, Hampshire County, Massachusetts. Marvin Rausch specimen...South Hecla 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...claim, Lake George intrusive center, Teller County, Colorado. Dave Bunk specimen, Jeff Scovil photo. November/December: |  | | Journal (issue) | | England Richard C. Erd U.S. Geological Survey Menlo Park, CA Donald R. Peacor University of Michigan Ann...R. Kampf Natural History Museum of Los Angeles County Arthur Roe Tucson, AZ Abraham Rosenzweig University...AZ 85715 602-299-5274 Articles The Jacupiranga mine, Sao Paula, Brazil ...............................and J. M. Martins The Jensen quarry, Riverside County, California .....................................coated with malachite, 5 cm across, from the Onganja mine, Namibia. Collection of the Sorbonne, University |  | | Journal (article/letter/editorial) | | gemstones: agate and sapphire. An extensive body of gem and mineral literature has been published describing...MICHAEL J. GOBLA 19055 East Bethany Place Aurora, Colorado 80013 gobla@copper.net Unless otherwise noted...view showing the Indian Queen mine ca. 1905 at Farlin, Beaverhead County. 208 ROCKS & MINERALS Downloaded...mines at Butte in Silver Bow County and the Black Pine mine in Granite County have produced many fine crystal...Crystal Park in Beaverhead County, the pegmatites of Jefferson County, and the Snowbird mine in Mineral |  | | Journal (issue) | | England Richard C. Erd U.S. Geological Survey Menlo Park, CA Donald R. Peacor University of Michigan Ann...Number Three Articles The Tonopah-Belmont mine, Maricopa County, A rizona by G. B. Allen & W. Hunt 139...from the Table Mountain lava flows near Golden, Colorado ........................................................221 COVER: ANGLESITE from the Touissit mine, Morocco. The large crystal measures 4.5 cm. This...sponsored jointly by Friends of Mineralogy, the Tucson Gem and Mineral Society, and the Mineralogical Society |  | | 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 (issue) | | behold the splendid sparkle of the distant mica-mine dumps in New England sunshine to agree with tftis...layered atomic structure. Of the micas, muscovite, phlogopite, and lepidolite are of the most economic importance...granites and syenites and especially The brown mica, phlogopite, shown here with andradite, has an almost metallic...New Hampshire, South Dakota, Idaho, New Mexico, Colorado, Virginia, South Carolina, Georgia, and Alabama...Mexico Bureau of Mines. PHLOGOPITE, KMg3 {AlSi 3) 0 10 (F,OH)2: Phlogopite is a brown mica and often |  | | Journal (issue) | | NaCl) was a key ingredient in the recipe for making gem-quality rubies out of lime and mud. (Continues on...CLARION AT RANDOLPH ROOM B-47 FROM JAN 29 THRU FEB PARK, 12 SEE US THERE ALONG WITH MANY OF THE VERY BEST...from page 1) l\larble-host Ruby Deposits Ruby is a gem variety of corundum. colored red by traces of chromium...purplishred Lored: Cleavage: none, parting may be present. Gem-quality rubies come from both primary (embedded in...minerals typically include calcite, dolomite, phlogopite, pyrite, margarite (CaAl~SiP 10(OH) 2 • mica |  | | Journal (issue) | | TUCSON GEM & MINERAL SOCIETY, INC. Located at: 3727 E. Blacklidge, building labeled "Adobe Bridge Club"...(second Monday due to Labor Day holiday). The Tucson Gem and Mineral Show: the second full TABLE OF CONTENTS...Juniors, pps. 8-9 President: Peter Megaw, 529-2231 Colorado Marble, pps. J (, Vice-President: Terry Wallace...official publication of and is© 1995 by The Tucson Gem and Mineral Society. Rights are granted to AFMS and...use requires written permission from The Tucson Gem and Mineral Society. Contributing Author: Anna Domitrovic |  | | Report (issue) | | International, LLC P.O. Box 263, East Hampton, CT 06424, USA Phone 1.860.267.1512; fax 1.860.267.7225 www.lapisint...elbaite crystals with lepidolite from the Golconda Mine in Minas Gerais, Brazil by Eberhard Equit, 1993...CHRISTIAN WEISE VERLAG, GERMANY AND LAPIS INTERNATIONAL, USA Tourmaline ♦ History ♦ Mineralogy • Tourmaline...this crown was not a ruby, but a tourmaline. The gem in this crown is now the oldest known important tourmaline...until its early eighteenth century arrival on the gem mar kets of Amsterdam, that tourmaline gained notice |  | | Journal (issue) | | brown jarosite crystals on matrix from the McLean Mine, Esmeralda Co., Nevada. The Martian material was...manufacturer’s standards. NIST Price: $556.00 Hard Rock Mine Waste (SRM 2780a) This Standard Reference Material...analysis used to determine elements in hard rock mine waste and materials of a similar matrix. SRM 2780a...from waste piles of abandoned mine sites in the mountains of central Colorado. A unit of SRM 2780a consists...Figure 6 (Right) - Sheet Copper – Flambeau Mine (Rusk County, WI) Figure 2—Dr. Weis’s Personal Memorabilia |  | | Book (edition) | | Published by Sterling Publishing Co, Inc. 419 Park Avenue South, New York 10016 British edition published...are saving. The science of mineralogy seems so complex, involving so much pre-knowledge, that it is little...mineral from another. We now come to the most complex aspect of minerals and one which we cannot possibly...Peninsula, Michigan. Found in Colorado at Aspen and in Boulder County; also in several mining areas in...Creek, and Breckenridge districts of Colorado. Also at Homestake Mine, South Dakota; in Montana and Arizona |  | | 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? ...................................... Famous mineral localities: the Home Sweet Home mine ..................................................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 |  | | Journal (article/letter/editorial) | | ALKALIC ROCKS OF THE ARKANSAS RIVER AREA, FREMONT COUNTY, COLORADO.4. THE PINON PEAK BRECCIA PIPES1 E. Wru...Assrnecr The Pinon Peakbrecciapipesin Fremontcounty, colorado,are satelriticto the tion are recorded, thus...bodies of the alkalic province of Fremont and custer counties, colorado. The pinon peak breccia pipes, herein...satellitic to the Mcclure Mountainrron Mountain complex, just as the Democrat creek comprex has marginal...s (3.3 airline miles) from its consanguineous complex, whereasin Democrat Gulch the brecciasare adjacent |
|
