 | | Report (issue) | | Deposits of the Poncha Springs NE Quadrangle, Chaffee County,Colorado By RALPH E. VAN ALSTINE With a section... PAPER 626 Prepared in cooperation with the Colorado State Mining Industrial Development Board UNITED...Rhyolitic ash-flow tuff ______________________ _ Nathrop Volcanics _________________________ _ Browns Canyon...Ralph E. Van Alstine and Doak C. Cox _________ _ Colorado-American mine ______________ -_Delay adit and...Poncha Springs NE quadrangle. Geologic map of the Colorado-American fluorspar mine, Browns Canyon district |  | | Report (volume) | | the Browns Canyon Wilderness Study Area, Chaffee County, Colorado U.S. GEOLOGICAL SURVEY BULLETIN 1716-C...the San Isabel National Forest, south-central Colorado: U.S. Geological Survey Bulletin 1638, p. 40-42...SOUTH-CENTRAL COLORADO Mineral Resources of the Browns Canyon Wilderness Study Area, Chaffee County, Colorado...Area, Chaffee County, Colorado. (Mineral resources of wilderness study areas South-Central Colorado; ch...Mines and mineral resources Colorado Browns Canyon Wilderness. 2. Geology Colorado Browns Canyon Wilderness |  | | Book | | Pumice 5. 3. II. 6. 7. 8. 9. 10. 11. Rhyolite Colorado Mass. Felsite (Aporhyolite) Quartz-Felsite Porphyry...Porphyry South Dakota Rhyolite Porphyry (Nevadite) Colorado Pumiceous Rhyolite 13. 14. 15. 16. 17. 18...Granite Mass. Binary Granite N. H. Binary Granite Colorado Biotite-Granite R. I. Biotite-Granite Vermont...Sanidine-Trachyte Colorado Trachyte Porphyry S. Dakota 23. Bostonite 27. 28. 29. Phonolite Colorado Leucite-Syenite...Monzonite Colorado Phonolite-Nephelite-Syenite Series: IV. V. Perlite Colorado Vitrophyre Colorado Rhyolite-Granite |  | | 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 (article/letter/editorial) | | more. "The Glove Mine is located in Santa Cruz County, Arizona, near the little town of Amado, on the...specimen with a pleasing combination of two minerals. COLORADO — "I used to be a regular reader of R&M and a...spectacular, only good representative specimens of Colorado minerals. Half the fun is the trip anyway. No...consists solely of minerals I've found here in Colorado." — letter dated Jan. 10, I960, from Doug Graham...in length. They come from Mt. Antero, Chaffee County, Colorado (altitude of pocket where found over 14 |  | | 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...Swallow, Publisher) 2679 South York Street Denver, Colorado 80210 - , =· - ·, BOOKS BY RICHARD M. PEARL...Exploring Rocks, Minerals, Fossils in Colorado America's Mountain: Pikes Peak and the Pikes Peak Region...Atlas of Colorado American Gem Trails Nature As Sculptor: A Geologic Interpretation of Colorado . Scenery |  | | Report (volume) | | be changed by heat treatment or dyeing. Only the ruby, sapphire, spinel, emerald, rutile, and quartz of...or two of these qualities. The diamond, emerald, ruby, and sapphire are considered precious gems. Some...canary yellow in the diamond; pigeon-blood red in the ruby; cornflower blue in the sapphire; and grass green...price of a gem stone. Such gems as the diamond and ruby are rare, in addition to being beautiful and durable...the deep redpyrope garnet closely resembles the ruby in color, there is no comparison in expense and |  | | Report (chapter) | | BULLETIN 160, 2004 205 Geochronology of the central Colorado volcanic field William C. McIntosh and Charles...Technology, Socorro, NM 87801 Abstract The central Colorado volcanic field (CCVF) consists of at least ten...volcanic field to the southwest, and over lapped the Colorado Mineral Belt on the north and west. The CCVF was...determined for three other regional ignimbrites (Wall Mountain Tuff, 36.7 Ma; tuff of Stirrup Ranch, 36.5 Ma;...0 Ma), Guffey (36.1 Ma), Waugh Mountain (31.6 –31.3 Ma), and Nathrop (30.4–28.9 Ma). Dated plutons in |  | | Book (edition) | | — _ ; COLORADO GEM TRAILS AND MINERAL GUIDE ! ■ : ' BOOKS BY RICHARD M. PEARL Colorado Gem Trails...Trails and Mineral Guide Colorado Rocks, Minerals, Fossils America’s Mountain: Pikes Peak and the Pikes...Nature As Sculptor: A Geologic Interpretation of Colorado Scenery Guide to Geologic Literature Popular Gemology...Gemology Mineral Collectors Handbook Colorado Gem Trails The Art of Gem Cutting (With Dr. H. C. Dake)...Dake) * RICHARD M. PEARL ★ COLORADO GEM TRAILS AND MINERAL GUIDE ★ SKETCH MAPS BY MIGNON WARDELL PEARL |  | | 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...from the vicinity of Pikes Peak itself, Stove Mountain and Sentinel and Specimen Rocks; Crystal Park; |  | | Book | | MINES AND MINERALS OF THE GREAT AMERICAN RIFT (COLORADO-NEW MEXICO) Sine —_—< ¢ te om At _SHT 40...MINES AND MINERALS OF THE GREAT AMERICAN RIFT (COLORADO-NEW MEXICO) Richard Walker Holmes and Marrianna...Mines and minerals of the Great American Rift (Colorado-New Mexico). Bibliography: p. Includes index...index. 1. Mines and mineral resources—Colorado. 2. Mines and mineral resources—New Mexico. I. Kennedy, Marrianna...minerals of the Great American Rift in New Mexico and Colorado. Great American Rift is the name we use for a |  | | 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) | | MINERAL COLLECTING BY CAMPER IN COLORADO By LAWRENCE AND HARRIETTE SCHOPPEE 9 Greenbrier St., Springfield...investigating such a claim? We took our Camper to Colorado and now that state rivals Canada in our list of...campgrounds are available, and many new sites in Colorado are being opened every year. Our sleeping bags...described in Professor Richard M. Pearl's book, "Colorado Gem Trails and Mineral Guide." As in any other...before starting to collect in Colorado. Traveling from Massachusetts to Colorado is a trip in itself but don't |  | | 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 |  | | Journal (article/letter/editorial) | | garnet from the Topopah Spring Tuff at Yucca Mountain, Nevada, USA R. J. MOSCATI* AND C. A. JOHNSON U.S...Federal Center, Box 25046, MS 963, Denver, CO 80225, USA [Received 20 January 2014; Accepted 10 April 2014;...Spring Tuff of the Paintbrush Group from Yucca Mountain, in southern Nevada. The Miocene-age Topopah Spring...not found in the Topopah Spring Tuff at Yucca Mountain. Based on their occurrence only in lithophysae...lithophysal floors. K EY WORDS : garnet, Yucca Mountain, vapour phase, oxygen isotope, tridymite, Topopah |  | | 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 |  | | Journal (article/letter/editorial) | | Although Colorado may be most noted for rhodochrosite or amazonite, the many varieties and associations...a k e w o o d , Colorado 80225 DIANNE L. K I L E 333 S a l e m Street Aurora, Colorado 80011 C O L O...above sea level; with more than eight hundred mountain peaks exceed ing 11,000 feet, the average elevation...and J. A. Mur phy for an update to Minerals of Colorado: A 100-Year Record (Eckel, 1961). 374 ROCKS... Quartz was a familiar gemstone to many early Colorado residents, as documented by an extensive body |  | | 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) | | San Isabel National Forest, South-Ce tral Colorado COLORADO An Assessment of the Mineral Resource...the San Isabel National Forest, South-Central Colorado By Richard B. Taylor, Rebecca j. Stoneman, and...the San Isabel National Forest, south-central Colorado Mineral resource potential map of the San Isabel...Isabel National Forest, south-central Colorado FIGURES 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14....the San Isabel National Forest, South-Central Colorado By Richard B. Taylor, Rebecca j. Stoneman, and |  | | 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 |  | | Journal (issue) | | Colorado Springs Mineralogical Society Founded in 1936 Lazard Cahn Honorary President February 2020...of the Western Museum of Mining & Industry in Colorado Springs. He is currently working on a study of...gold mines. COLORADO SPRINGS MINERALOGICAL SOCIETY PO BOX 2 COLORADO SPRINGS, COLORADO 80901-0002 February...Denver Mining Club weekly meeting, Martin Palkovic, Colorado Geological Survey, Cretaceous Sedimentary Bedrock...ReturnFlows to the Arkansas River, Southeastern Colorado. Golden Corral Buffet & Grill, 3677 South Santa |  | | Report (issue) | | mineral resources of the Browns Canyon area, Chaffee County, Colorado By A.M. Leibold 1 , D.E. Detra 1 , and...does not imply endorsement by the USGS. Denver, Colorado UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL...mineral resources of the Browns Canyon area, Chaffee County, Colorado By A.M. Leibold 1 , D.E. Detra 1 , and...does not imply endorsement by the USGS. Denver, Colorado CONTENTS Page INTRODUCTION...................basin map of the Browns Canyon study area, Chaffee County, Colorado Geologic map and geochemical sample location |  | | 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 |  | 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 (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....uvarovite crystal, 0.8 mm, near Jacksonville, Tuolumne County, California. Dan Behnke specimen tahedral crystals...Ramona, San Diego County, California. Natural History Museum of Los Angeles County specimen and photo...Marquette, Michigan; and Emerald Creek, Benewah County, Idaho. Garnet crystals in igneous rocks-rhyolites |
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