 | | Journal (article/letter/editorial) | | 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 āEarly, Middle, and Lateā 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 |  | | Journal (article/letter/editorial) | | 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 |  | | Journal (article/letter/editorial) | | DIKES OF MOUNT ROSA COMPLEX AREA, COLORADO FRONT RANGE, COLORADO, USA SARAH L. HANSONĀ§ Adrian College,...Madison Street, Adrian, Michigan 49221, USA, GARY ZITO Colorado School of Mines, Metallurgical and Materials...Department, 1500 Illinois Street, Golden, Colorado 80401, USA Keywords: pegmatite, beryllium mineralization...INTRODUCTION The Mount Rosa Complex (MRC), located in the Colorado Front Range, extends from St. Peters Dome in the...the Pikes Peak Granite (PPG), the most abundant rock unit in Mount Rosa Complex. The remainder of the |  | | 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...and J. A. MurĀ 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 (inĀ cluding quartz) was included |  | | Journal (article/letter/editorial) | | COLORADO TOPAZ Topaz, Al Si0 (F,OH) is one of Colorado's better known gem minerals. Though ColĀ orado...(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."...area. The largest fine-quality topaz specimens in Colorado occur in several separate and distinct localities...are also referred to the general discussions of Colorado topaz in Eckel (1961) and Pearl (1963) and to |  | | Journal (article/letter/editorial) | | 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 |  | | Journal (issue) | | 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...ābruisedā area in the center which resulted from the specimen falling on my hard hat as it was being pried off...off the back. āThe 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. āBy afternoon, we left the |  | | Journal (issue) | | 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 |  | | 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 (edition) | | MILEAGE L OGS. REVISED EDITION Revised Edition, COLORADO GEM TRAILS AND MINERAL GUIDE HICllAHD :--1. PEARL...an extensive Ā„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 - , =Ā· - Ā·, BOOKS BY RICHARD M. PEARL...PEARL Exploring Rocks, Minerals, Fossils in Colorado America's Mountain: Pikes Peak and the Pikes Peak |  | | Book (edition) | | ā _ ; COLORADO GEM TRAILS AND MINERAL GUIDE ! ā : ' BOOKS BY RICHARD M. PEARL Colorado Gem Trails...Trails and Mineral Guide Colorado Rocks, Minerals, Fossils Americaās 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 ā
COLORADO GEM TRAILS AND MINERAL GUIDE ā
SKETCH MAPS BY MIGNON WARDELL PEARL |  | | 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 |  | | Report (issue) | | Denver, Colorado, USA Ā© 2011 by Lithographie, LLC P.O. Box 11613 ā¢ Denver, CO 80211 ā¢ USA Phone 1.303...collection Robert Weldon photo Above: Topaz, 5.5 cm tall El Chalten, Santa Cruz, Argentina Scott Rudolph collection...Topaz ALFREDO PETROV & JOHN RAKOVAN 34. Colorful Colorado DAVID W. BUNK 42. Mongolian Topaz: The Gorkhi...surface (001), the refractive index of a given specimen can provide a sensitive method for determining...Mine, Thomas Range, Utah; Utah Mineral and Fossil specimen, Scovil photo Middle left: Topaz and quartz, 2 |  | | Book (volume) | | 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 ........ |  | | Catalog/List | | localities. Of particular note is an exceptional Sulfur specimen from Italy ā a tremendously large crystal on matrix...Mammoth-Saint Anthony Mine, Tiger, Pinal Co., Arizona, USA Named by the Romans for the area of Scotland beyond...Wisconsin, USA This is one of the Chalcocite crystal groups saved by enlightened specimen collecting...Himalaya Mine, Mesa Grande, San Diego County, California, USA San Diego County doesnāt just raise Avocados and...Dam Mountains, Washington County, Utah, USA Distinctively unique as a specimen can be, this Azurite and |  | | Journal (article/letter/editorial) | | Clear Creek County. Cluster of intergrown crystals showing light ācathedralā 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 |  | | Book (volume) | | 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 ............. |  | | Book (volume) | | 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 ........ |  | | Journal (issue) | | Minerals The Storied Collection of Merritt Romans ROCK & GEM ā¢ Vol 47 No. 11 ā¢ U.S. $5.99 ā¢ Issue Code:...Steve Voynick 48 ROCK & GEM KIDS 46 A STORIED COLLECTION 48 Merrit Romansā rock museum is a small-town...Month ....8 Bench Tips ......................... 22 Rock Science .................... 34 What to Cut ......QUESTIONS? Call (855) 777-2325 Printed in U.S.A. Rock & Gem (ISSN 0048-8453, USPS 486290) is published...advertisements. For this reason, advertisements appearing in Rock & Gem should be considered as requests to inquire |  | | Journal (issue) | | TRIM SAW COMPLETE by Lortone Stock No. 1-0877 6" ROCK RASCAL-MODEL āJā 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 |  | | Journal (issue) | | Colorado Springs Mineralogical Society THE BULLETIN OF THE COLORADO SPRINGS MINERALOGICAL SOCIETY Published...Upcoming Events 1-5 Article - S. Veatch, The Castle Rock Quarries: A Building Stone Bonanza, part 1 of a...personalities. Steven Veatch is a member of the Colorado Springs Mineralogical Society, the Lake George...the CaƱon City Geology Club, Grand Traverse Area Rock and Mineral Club, and the Central Michigan Lapidary...his cabin near Divide Colorado and on the shores of Duck Lake, Michigan. COLORADO SPRINGS MINERALOGICAL |  | | Journal (article/letter/editorial) | | Contributed Papers in Specimen Mineralogy: Part 2 46 RMS program cover by Susan Robinson th THE THIRTY-SIXTH... GOLD FROM THE WILD AMMONOOSUC RIVER, GRAFTON COUNTY, NEW HAMPSHIRE. J. S. Genga, C. B. Handler, and...Placer gold deposits in localities that are hosted by rock that has experienced less overall reworking, such...FROM THE WILD AMMONOOSUC AND BAKER RIVERS, GRAFTON COUNTY, NEW HAMPSHIRE. C. B. Handler, J. S. Genga, and...occur over geologic time, as placer-concentrated rock sheds sediments that are themselves concentrated |  | | 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) | | Menzies Pink topaz from the Thomas Range, Juab County, U ta h .........................................to Uli c/o Martin Zinn, P.O. Box 2433, Evergree Colorado 80439. I The Mineralogical Record, volume 26,... Crawford, David Minerals Crystal Systems D & M Rock & Gem D J Minerals, Inc. De Trin Minerals Delta...Carter Fine Minerals Richards - Foster Rock & Mineral Magazine Rock Art Fossils of The UK - England Rocks...Thom pson, Wayne A., Fine Minerals Tideswell Dale Rock Shop - England Tintic & Tiger Trading Co. Top M |  | | 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 |
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