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| of Earth, which is not recorded directly in the rock record, is termed the Hadean Eon; Volume 76, September/Octokr...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 |
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| 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...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...body of literature. The first published list of Colorado mineral localities (in cluding quartz) was included |
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| COLORADO TOPAZ Topaz, Al Si0 (F,OH) is one of Colorado's better known gem minerals. Though Col orado...orado topaz may not compare in size with that found in Brazil, gemmy crystals up to 4 inches have been found...(PJM), 975 (TCM) Box 25046, Federal Center Denver, Colorado 80225-0046 A ccording to Cross and Hillebrand...discovery of Colorado topaz was made about 1880 by a Mr. Thiebald,* "a prospector of Colorado Springs."...Park area. The largest fine-quality topaz specimens in Colorado occur in several separate and distinct |
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| 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 |
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| 14: Topaz Perfect Cleavage ISBN 978-0-9790998-9-2 Publisher Lithographie, LLC Denver, Colorado, USA...Lithographie, LLC P.O. Box 11613 • Denver, CO 80211 • USA Phone 1.303.495.5521 • Fax 1.303.482.1238 www.lithographie...United States of America Photo Credits Cover: Topaz, 3.5 cm tall Capao Mine, Ouro Preto, Minas Gerais...Sigerman collection Robert Weldon photo Above: Topaz, 5.5 cm tall El Chalten, Santa Cruz, Argentina Scott Rudolph...brooch/pendant is set with topaz from three different localities. Two Brazilian "Imperial" topaz gems make up the |
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| on Amazonite 7.5 cm, from the Smoky Hawk claim, Colorado. Collected by the Dorris family; Tom Spann photo...thrill of discovery. After all, every mineral specimen in collections around the world has but a single...‘bruised’ area in the center which resulted from the specimen falling on my hard hat as it was being pried off...off the back. “The most memorable specimen that I collected was one at the very top of the dome, and...came in, one at a time, to see this magnificent specimen before we removed it. “By afternoon, we left the |
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| R. Kampf Natural History Museum of Los Angeles County George Robinson National Museums of Canada Arthur...SPECIMENS from the collection of the Geology Museum, Colorado School of Mines. See page 242 for a full description... All rights reserved. notes fromthej EDITOR COLORADO-III Here we are with our third special issue devoted...devoted to the mines and minerals of Colorado. As most long-time subscribers know, the first in the series...about $200 on the out-of-print market. The second Colorado issue was vol. 10, number 6 (1979), and we still |
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| 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 |
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| inch on edge, from the Henderson mine, Clear Creek County. Figure 2 (right). Green fluorite encrusted with...Mountain Wilderness area near Columbine Lake, La Plata County; largest crystal measures 1.25 inches on edge;... FLUORITE BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado 81427 Mineral photographs by John R...locations in Mexico; in Elmwood, Smith County, Tennessee, and in Hardin County, Illinois, in the United States;...eastern Russia. It also occurs in many localities in Colorado, where it is found in colors ranging from pale |
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| — _ ; 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 |
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| Mineral Localities of Colorado EDWIN J . OVER, JR. "Second Edition " is a feature which reruns pertinent...D E A C O L L E C T I N G trip to Mt. Antero, Colorado, long famous for its aquamarines and associated...loose slide rock which covers most of the country above timberline. Traveling over this loose rock is dangerous...the rest of it is deeply butied under the slide rock. Here I found a few small aquamarines of a very...mineral localities. Some Mineral Localities of El Paso County (Rocks & Minerals, December 1929) Crystal |
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| A Location Guide for Rock Hounds in the United States Collected By: Robert C. Beste, PG 2014 Fourth...Fourth Edition A Location Guide for Rock Hounds in the United States Published by Hobbit Press 2435 Union...printing December, 1996 ii A Location Guide for Rock Hounds in the United States Table of Contents Page..............................................59 Colorado ................................................................389 iii A Location Guide for Rock Hounds in the United States Page Ohio ........ |
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| describes sites under of the nearest town and county. and the many maps included book contain such...a precise explanation of how to recognize the rock formations in which gems occur. in The tabular...1 2 How fun to hunt for gems to identify 3 Rock formations How which gems occur 1 21 stone...that comes from opening a nodule or a pocket in rock and being the first to see a sparkling crystal fresh...GARNET KYANITE IOLITE SPHALERITE RUBY i^b TOPAZ CRYSTALS TOURMALINE CRYSTALS (Cro»$-$«ction ot |
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| A Location Guide for Rock Hounds in the United States Collected By: Robert C. Beste, PG 1996 Second...Second Edition A Location Guide for Rock Hounds in the United States Published by Hobbit Press 2435 Union...63125 December, 1996 ii A Location Guide for Rock Hounds in the United States Table of Contents Page..............................................47 Colorado ................................................................333 iii A Location Guide for Rock Hounds in the United States Ohio ............. |
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| A Location Guide for Rock Hounds in the United States Collected By: Robert C. Beste, PG 2005 Third Edition...Edition A Location Guide for Rock Hounds in the United States Published by Hobbit Press 2435 Union...63125 December, 1996 ii A Location Guide for Rock Hounds in the United States Table of Contents Page..............................................47 Colorado ................................................................333 iii A Location Guide for Rock Hounds in the United States Page Ohio ........ |
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| President 414 Glenarm, San Anton io , Texas 78204 Topaz and Quartz at Devil's Head by Beverly Dickerson...70,.174CK times lt·s price 111.2S !'pd. 6 ,LI. ROCK ASSORTMENT (10 TYPES) • , .oo !'pd. Stock No....wnrld famed meteor cra1e, t":on.tent5 q2 iron 7 n1r:k el 111 othPr elemen1s Supply so hm1ted olf'asr ~lHH1CS1...selec1,on of low cas1 l apidary tumblers. 1001s for rock gem hunters. synthetic gerns. gem ma~ers. telescopes...us we have shown many of you our opal at various rock shows and our slldes, we took of our opal mining |
 | | Journal (article/letter/editorial) |
| claim, Pikes Peak batholith, Teller County. The Collector’s Edge specimen, Jeff Scovil photo. PETER J. MODRESKI...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 |
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| TOPAZ, I J.INERALOGICAL RECORD JANUARY-FEBRUARY 1995 • VOLUME 26 NUMBER 1 • $10 Wayne & Dona Leicht........ 5 by M. A. Menzies Pink topaz from the Thomas Range, Juab County, U ta h ........................Lichte & P. H. Briggs FM-TGMS-MSA Symposium on topaz...................................................Columns Notes from the editor by W. E. Wilson TOPAZ, COVER: TOPAZ crystals to 4 cm, on matrix, from Ghundao...to Uli c/o Martin Zinn, P.O. Box 2433, Evergree Colorado 80439. I The Mineralogical Record, volume 26, |
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| was born in Missouri in 1903. We first came to Colorado in 1908, but I don’t remember much about that...several times in the next few years. When visiting Colorado, my family always stayed at the Iron Springs Chateau...those in my cabinet. In 1920, when we moved to Colorado Springs from Missouri, a friend, about my age...agates and carnelian from Austin Bluffs here in Colorado Springs. Shortly after that I met Willard Wulff...Museum of Nature and Science 2001 Colorado Boulevard Denver, Colorado 80205 Unless otherwise noted, all |
 | | Book |
| archives of data for the mineral collector and specimen-oriented mineralogist that has ever existed. This...chemical analysis, physical properties, etc.) s Specimen locality attribution only; no information about...193-256 137-208 129-192 209-264 193-256 [ [ COLORADO-Ill] 177-256 121-184 89-168 1-120 1-88 [ ...177-256 185-280 169-248 [ 425-528 337--400 COLORADO-II] 321--400 337--400 ARIZONA-Ill] 337--400...69-132 65-128 1-64 11 / 1980 20 I 1989 [ COLORADO-I] [ 289-352 385-448 [ AUSTRALlA] 353-504 |
 | | Journal (article/letter/editorial) |
| Clear Creek County. Cluster of intergrown crystals showing light “cathedral” striations: specimen 3 by 2...Barbara Muntyan specimen. Figure 2 (right). Pyrite, Mountain Spring mine, Rico, Dolores County. Cluster of...of modified cubes; specimen 2 by 2 inches; Barbara Muntyan specimen. C*O*L*O*R*A*D*O PYRITE BARBARA...BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado 81427 Mineral photographs by John R. Muntyan PYRITE,...Park City, Utah; Washington State; and numerous Colorado localities. Pyrite crystallizes in the isometric |
 | | Journal (issue) |
| TRIM SAW COMPLETE by Lortone Stock No. 1-0877 6" ROCK RASCAL-MODEL ”J” TRIM SAW $307.00 SALE Stock No...found. This 3.4 cm -high specimen is from the DeMaria mine in Placer County, California. (Jeff Scovil...on Hughes creek regular columns by Rob Towner Rock & Gem Kids .......................................Talk .......................................... 18 Rock Science ................................... 26 What...advertisements. For this reason, advertisements appearing in Rock & Gem should be considered as requests to inquire |
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| carat round :!~ce lis:i a~;v:ns:.n4,~t:ii::~n~~~m::El~r&m:i brilti1nt ............ ..... _. ..(R11u1tar................ 20 The Thunderegg, Oregon's State Rock by Frank Fehely ........ .. ... . .... . . 32 Johnny.... . . . . . . .. .. .... . au .25 " "· I-LI. ROCK AIIOlffMlNT (10 TYPE.I ) Stock No. 70.-CK .. . ...low cast lapidary I Enormous tumblers. tools for rock gem hunters. synthetic gems, gem makers, telescilpes...Show. " Stanislaus Treasure Trove." Stanislaus County Fairgrounds, Turlock, Ca. Mother Lode Mineral Society |
 | | Book (edition) |
| MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...Easy-to-understand instructions for recognizing rock formations; glossary. How to identify gem minerals...is a precise explanation of h< to recognize the rock formation* which gems occur. The tabular Gem ...Maryland; Professor Richard Pearl of Colorado Springs, Colorado; and Professor Jack Hanahan of Belmont... contents fun to hunt for gems 1. It's 2. How 3. Rock formations 4. How 5. Characteristics of important |
 | | 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 |
