 | | Journal (article/letter/editorial) | | COLORADO TOPAZ Topaz, Al Si0 (F,OH) is one of Colorado's better known gem minerals. Though Col 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."...been in the Crystal Park area. The largest fine-quality topaz specimens in Colorado occur in several separate...are also referred to the general discussions of Colorado topaz in Eckel (1961) and Pearl (1963) and to |  | | Journal (article/letter/editorial) | | northwest acro88 the cliff’s of Glen Cove to South Park and the Tarryall Mountains. Researchers have subdivided...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 |  | Foord, E. E., Černý, P., Jackson, L. L., Sherman, D. M., Eby, R. K. (1995) Mineralogical and geochemical evolution of micas from miarolitic pegmatites of the anorogenic pikes peak batholith, Colorado. Mineralogy and Petrology, 55 (1) 1-26 doi:10.1007/bf01162576 | Journal (article/letter/editorial) | | pegmatites of the anorogenic Pikes Peak batholith, Colorado E. E. Foord 1, P. Cern~ z, L. L. Jackson ~, D...Mineral Resources, U.S. Geological Survey, Denver, USA Department of Geological Sciences, University of...Denver, USA Branch of Geophysics, U.S. Geological Survey, Denver, USA Topometric, Bedminister, USA With...anorogenic Pikes Peak batholith (1.08-1.02 Ga), Colorado range in composition, and follow in paragenetic...(mostly amazonite), and albite, with local topaz or fluorite, and rarely tourmaline (schorl-elbaite). Progressively |  | | Journal (article/letter/editorial) | | CLASSIC COLORADO PORTFOLIO MINERALS: BARBARA L . MUNTYAN 6978 Mapiti Court Boulder, Colorado 80301 COLORADO...COLORADO IS ONE OF THE MOST HIGHL Y MINERALIZED states in the Union. Not only is it known for the variety...found in Colorado occur in extraordinarily large and beautiful crystals. Some of the best Colorado specimens...rather common species from a number of famous Colorado locales. There were literally dozens of other...Shares of Colorado. Figure 1 (left): Hematite after siderite, quartz, Lake George, Park County, Colorado |  | | 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 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 |  | | 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...Mountain and Sentinel and Specimen Rocks; Crystal Park; Glen Cove; Florissant, Lake George, and Crystal |  | | 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. 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 |  | | Other Paper | | G•ologica.l Survey Deaver Fedoral Ce�ter Lakewood, Colorado 80225 a..nd Robert F. Ma.rtin Dept. of Geologic�l...amazoni te. The first description of amazonite from Colorado appears to have been that of Hollister (1867)...development of the ar�a. • Crystals and specimens of Colorado amazonite are among the finest ·in the world1... Such The occurrences of such amazonite in Colorado are world-famous. Numerous articles have been...intrusive centers, (1) Pikes Peak, (2 ) Lost Park, a�d (3) Buffalo Park (fig.-5 of Hutchinson, 1976). Pegmatites |  | | Journal (article/letter/editorial) | | 04:13 19 December 2014 Mount Antero, Chaffee County, Colorado A s virtually every collector knows, many...and some districts, such as those in San Diego County, California, and many of those in Minas Gerais...aquamarine localities, Mount Antero, Chaffee County, Colorado, was highlighted by Jacobson and Lees (2008)...at the addresses above. 338 ROCKS & MINERALS fluorite, the micas and feldspars, and quartz; there appears... at Waterford, Oxford County; and the Square pit at Topsham, Sagadahoc County, Maine. Good crystals are |  | | 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) | | 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) | | pale green fluorite octahedra, 0.75 inch on edge, from the Henderson mine, Clear Creek County. Figure 2...2 (right). Green fluorite encrusted with quartz on a plate of quartz, from a prospect in the Needle Mountain...Mountain Wilderness area near Columbine Lake, La Plata County; largest crystal measures 1.25 inches on edge;... C*O*L*O*R*A*D*O FLUORITE BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado 81427 Mineral photographs...reported from numerous localities worldwide. Fine fluorite specimens in many habits and colors have been |  | | Journal (issue) | | com Front cover: Fluorite on Amazonite 7.5 cm, from the Smoky Hawk claim, Colorado. Collected by the...Tom Spann photo. Back cover: Top row, from left: Fluorite, 6.7 cm, from the Weisseck, Austria. Collected...by Federico Pezzotta; Antonio Miglioli photo. Fluorite, 7.4 cm, from the La Barre mine, France. Collected...finest aquamarine and phenakite from Mt. Antero, Colorado, and their most publicized effort, the mining...museum quality.” (Szenics, 1967) Spruce Peak, King County, Washington, 1977 Beautiful pyrite and quartz specimens |  | | Journal (article/letter/editorial) | | DANIEL E. KILE 5176 Black Bear Run Littleton, Colorado 80125 dkile4@comcast.net Albite and Microcline...Microcline From the Crystal Peak Area Teller County, Colorado A MYSTERY REVISITED F or many years collectors...crystal from the Crystal Peak area, Teller County, Colorado; this crystal was enclosed in quartz, preserving...Crystal Peak area north of Florissant in Teller County, Colorado. The contents of this find were among the...Florissant and Lake George in Teller and Park counties, Colorado; they were also noted in amazonite specimens |  | | Journal (article/letter/editorial) | | MIAROLITIC CAVITIES OF THE PIKES PEAK BATHOLITH, COLORADO DANIEL E. KILE§ U.S. Geological Survey, 3215 Marine...Marine Street, Suite E–127, Boulder, Colorado, 80303, U.S.A. ABSTRACT Clay samples from 105 cavities...pegmatites throughout the Pikes Peak batholith, in Colorado, were analyzed by powder X-ray diffraction (XRD)...pegmatite, clay minerals, Pikes Peak batholith, Colorado. SOMMAIRE Des échantillons provenant de 105 cavités...part et dʼautre du batholite de Pikes Peak, au Colorado, ont été analysés par diffraction X (méthode des |  | | Catalog/List | | [Hoppel #D0234] Estimate: $2,800-$3,600 52003 FLUORITE Dal’negorsk Tetyuche, Kavalerovo Mining District...aesthetics. It consists of two simple cubes of Fluorite with deceptively simple form and luster. Only...Dolomite crystals being incorporated into the Fluorite. Simple, and yet ... not. There is no other matrix...matrix. The glassy luster is a good as it gets with Fluorite. The specimen comes with a custom acrylic base...May 4, 2014 | 12:00 PM CT 11 52007 FLUORITE De’an Fluorite Mine, Wushan, De’an Co., Jiujiang Prefecture |  | | Report (issue) | | Denver, Colorado, USA © 2011 by Lithographie, LLC P.O. Box 11613 • Denver, CO 80211 • USA Phone 1.303...Topaz ALFREDO PETROV & JOHN RAKOVAN 34. Colorful Colorado DAVID W. BUNK 42. Mongolian Topaz: The Gorkhi...and quartz, 5.3 cm tall Sawtooth Mountains, Boise County, Idaho shown under longwave ultraviolet light (left)... and quartz, with inclusions of margarite and fluorite. volcanic deposits should be drier and shallower...alkali elements. If the calcium content is high, fluorite will form instead of topaz. Water contents in |  | | Catalog/List | | ADAMITE Superb crystal 2. AMAZON ITE Harris Park, Park Select pale blue-green single crystals. (A)...limonite. 1¼x211 $ 15.00. MINERALS For Co. ,Colorado te,·minated modified (B) 3/4x1 11 $4.50. ANDORITE...50. crystals scattered on tan granular 39. FLUORITE Eagle Picher mine, Niaca, Chihuahua, Mexico Select...and galena inclusions. l-3/4x2 11 $ 8.50. 40. FLUORITE Castle Dorne, Yuma Co., Arizona Superb pale ti-anslucent...li, 11 terminated crystal with unusual etched fluorite base. l-3/4x3¼ 11 $ 15. 00. 41. 42. 43. 44. | | | Catalog/List | | ADAMITE Superb crystal 2. AMAZON ITE Harris Park, Park Select pale blue-green single crystals. (A)...limonite. 1¼x211 $ 15.00. MINERALS For Co. ,Colorado te,·minated modified (B) 3/4x1 11 $4.50. ANDORITE...50. crystals scattered on tan granular 39. FLUORITE Eagle Picher mine, Niaca, Chihuahua, Mexico Select...and galena inclusions. l-3/4x2 11 $ 8.50. 40. FLUORITE Castle Dorne, Yuma Co., Arizona Superb pale ti-anslucent...li, 11 terminated crystal with unusual etched fluorite base. l-3/4x3¼ 11 $ 15. 00. 41. 42. 43. 44. |  | | 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...PEARL Exploring Rocks, Minerals, Fossils in Colorado America's Mountain: Pikes Peak and the Pikes Peak...Atlas of Colorado American Gem Trails Nature As Sculptor: A Geologic Interpretation of Colorado . Scenery |  | | 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) | | England Richard C. Erd U.S. Geological Survey Menlo Park, CA Steven R. Morehead Riverside, CA Donald R. Peacor...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,...Chilon, Nerchinsk district, Siberia. 12 = Nathrop, Colorado. 6 The Mineralogical Record, volume 26, January-February...typically with regionally related hydrothermal fluorite deposits, as in the western U.S. and Transbaikalia |  | | Book | | 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...Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN...Iron-manganese phosphates of the Williams pegmatites, Coosa County, Alabama (by P. B. Leavens & T. A. Simpson) 6:66-73 |  | | Journal (issue) | | England Richard C. Erd U.S. Geological Survey Menlo Park, CA Steven R. Morehead Riverside, CA Donald R. Peacor.... Ley The Sm okey Bear quartz claim s, Lincoln County, N ew M exico ...................................matter of public record and may be found in the county zoning offices. The accurate property boundaries...Hawaii. Bartsch studied mining engineering at the Colorado School of Mines (1980-1982) and earned a B.A....PUBLISHING P.O. Box 37072, Tucson, Arizona 85740 USA Richard A. Bideaux, General Partner (602) 297-4862 |  | | Report (issue) | | Prepared in cooperation with the Colorado Geological Survey for the United States Department of Agriculture...Service Development of Industrial Minerals in Colorado Circular 1368 U.S. Department of the Interior...Survey Development of Industrial Minerals in Colorado By Belinda F. Arbogast, Daniel H. Knepper, William...John S. Dersch Prepared in cooperation with the Colorado Geological Survey for the United States Department..., 2011, Development of industrial minerals in Colorado: U.S. Geological Survey Circular 1368, 87 p. Library |
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