 | | 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...large (1,080 mi ) and well-exposed Pikes Peak batholith. The batholith, slightly more than 1 billion years |  | | Journal (article/letter/editorial) | | from the summit of Pika Peak looking northwest acro88 the cliffās of Glen Cove to South Park and the Tarryall...northeasterly-trending continentul Figure 2. Geologic map of the Colorado Front Range showing the Precambrian metamorphic...formbasin was established in the southeril Pikes Peak Batholith. Adapted by the author from Reed, Bickford...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 |  | | Journal (article/letter/editorial) | | Museum of Nature and Science 2001 Colorado Boulevard Denver, Colorado 80205-5798 jmurphy @ dmns.org PETER...Survey MS 150, Box 25046 Federal Center Denver, Colorado 80225-0046 pmodresk @ usgs.gov Unless otherwise...to 2000) J oin us for a gemstone tour around Colorado! Our field trip takes us from east to west in...in the same way you may have toured through Colorado on a mineral collecting trip. This route, from the...gemstones are known to occur. We cannot discuss every Colorado gemstone occurrence; rather, this is a general |  | | Journal (issue) | | Microminerals from Pegmatites in the Pikes Peak Batholith, Central Colorado Daniel E. Kile Research Associate...Nature & Science 5176 Black Bear Run - Littleton, Colorado 801215 Email: centennial87@comcast.net were sparse...number of localities throughout the Pikes Peak batholith in central Colorado, and many of them provide spectacular...found in pegmatites in the Pikes Peak batholith (PPB) in central Colorado. Although some minerals, such...weathered Pikes Peak Granite within the Pikes Peak batholith, in an area north of Florissant in Teller County |  | | Journal (issue) | | R. Kampf Natural History Museum of Los Angeles County George Robinson National Museums of Canada Arthur..................................203 R. Barnes Pikes Peak Granite........................................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 (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) | | 4. Microcline and quartz, 9.9 cm across, Tree Root Pocket, Two Point claim, Pikes Peak batholith, Teller...Teller County. The Collectorās Edge specimen, Jeff Scovil photo. PETER J. MODRESKI U.S. Geological Survey...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, |  | | Report (issue) | | Denver, Colorado, USA Ā© 2011 by Lithographie, LLC P.O. Box 11613 ā¢ Denver, CO 80211 ā¢ 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)...fluoresces brightest under longwave light at 350 nm (peak at about 352 nm). Don Newsome collection Jeff Scovil...Province, Afghanistan; San Diego County, California, and Thomas Range, Utah, USA Associated Species: In topaz |  | | Journal (article/letter/editorial) | | CLAYS IN MIAROLITIC CAVITIES OF THE PIKES PEAK BATHOLITH, COLORADO DANIEL E. KILEĀ§ U.S. Geological Survey...Survey, 3215 Marine Street, Suite Eā127, Boulder, Colorado, 80303, U.S.A. ABSTRACT Clay samples from 105...granitic pegmatites throughout the Pikes Peak batholith, in Colorado, were analyzed by powder X-ray diffraction...minerals in miarolitic cavities within the Pikes Peak batholith. Keywords: smectite, illite, kaolinite,...granitic pegmatite, clay minerals, Pikes Peak batholith, Colorado. SOMMAIRE Des Ć©chantillons provenant |  | | Journal (issue) | | Julius Weber Mamaroneck, New York COLORADO ISSUE #2 Articles Colorado locality index.............................. 323 by B. L. Muntyan Whatās new in Colorado minerals? ......................................of Colorado ..................................349 by J. A. Murphy Amazonite from the Pikes Peak batholith...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) | | was born in Missouri in 1903. We first came to Colorado in 1908, but I donāt 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 |  | | Journal (article/letter/editorial) | | collecting at the Glen Cove area, was written in the mid-1970s by long-time Colorado mineral collector...1990 newsletter of the Friends of Mineralogy, Colorado Chapter. It is reproduced here, after minor editing...knowledge, the first discovery of topaz at Glen Cove on Pikes Peak was made above timberline by Luther McKnight...1945 O. A. Reese and Clarence Coil returned to Glen Cove to find some good amazonstone crystals, and near-tragedy... Figure 1 (above left). Cliffs at Glen Cove, above the Pikes Peak auto road. Clarence Coil photograph |  | | Journal (article/letter/editorial) | | Geological Survey, Denver Federal Center, Denver, Colorado 80225, U.S.A. MARCO POPPIĀ§ Dipartimento di Scienze...129 and 147 are from the anorogenic Pikes Peak batholith (Colorado). Sample 129 is from a miarolitic cavity...Campground (Tarryall area, Park County). The muscovite is associated with microcline, fluorite, and smoky quartz...Sample 147 is from near Glen Cove (El Paso County) and is associated with microcline and smoky quartz (Kile...level of geochemical differentiation of these two Colorado localities is further indicated by the presence |  | | 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 petriļ¬ed wood article by...the magazine so you get your very own copy! Colorado Minerals is the theme of the 2008 Denver Gem and...Pike National Forest. Famous areas within the batholith noted for their concentration of pegmatite dikes |  | | Book (edition) | | ā _ ; COLORADO GEM TRAILS AND MINERAL GUIDE ! ā : ' BOOKS BY RICHARD M. PEARL Colorado Gem Trails...Mineral Guide Colorado Rocks, Minerals, Fossils Americaās Mountain: Pikes Peak and the Pikes Peak Region American...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 |  | | 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 |  | | Journal (issue) | | I. Jacobson, Denver, CO Anthony R. Kampf, l.A. County Museum of Natural History, CA Virgil W. Lueth,...across a local area net\,vork. Subscription offices: USA/North America: Taylor & Francis Group, LLC, 530 Walnut...Copyright Clearance Center (www.copyright.com) in the USA or the Copyright Licensing Agency (www. cla.co.uk)...Brazil: At the Natural History Museum of Los Angeles County, Carl A. Francis and Aaron Celestian 89 Who's...cm high, Himalaya mine, Mesa Grande, San Diego County, California; E: Tourmaline, 13.8 cm, Madagascar; |  | | 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...Swallow, Publisher) 2679 South York Street Denver, Colorado 80210 - , =Ā· - Ā·, BOOKS BY RICHARD M. PEARL...Minerals, Fossils in Colorado America's Mountain: Pikes Peak and the Pikes Peak Region Seven Keys to...Atlas of Colorado American Gem Trails Nature As Sculptor: A Geologic Interpretation of Colorado . Scenery |  | | 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,...Geofil - Portugal Geological Centre - Holland Glacier Peak Art, Gems & Minerals Gladwell, Jon Good Earth Minerals...Chilon, Nerchinsk district, Siberia. 12 = Nathrop, Colorado. 6 The Mineralogical Record, volume 26, January-February...(c) Continental M argin Arc: Peninsula Ranges Batholith, California; Back Arc: Western U.S., northern |  | | 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) | | Three mine pegmatites, Ramona district, San Diego County, California ............................101 by...25046, M .S. 905 Denver Federal Center Denver, Colorado 80225 In recent decades the science of mineralogy... 905 Box 25046 Denver Federal Center, Denver, Colorado 80225 Louis B. Spaulding, Jr. P. O. Box 807, Ramona...Three property in the Ramona district, San Diego County, California. This mine, strictly speaking, is developed...for the other pegmatite gem mines in San Diego County, the collapse o f the Chinese tourmaline market |  | | Journal (issue) | | severalof the Arkansas antimonymines in Sevier County,Arkansas (Smithand Staszak, 1996).This districtis...News, P.O. Box 2043, Coeur d'Alene, ID 83816-2043 USA Phone: 208-664-2448 E-mail: lream@comtch.iea.com...Fresnoite find at the Junnila Mine, San Benito County, California Scott Kleine 3895 Lisa CT, Apt C Reno...on the Junnila Property, located in San Benito County, California. This mine was formerly known to have...minerals occur, with most quartz, localities, Magnet Cove., etc., only $14.95 plus $2.00 s&h, order from LR |  | | Journal (article/letter/editorial) | | mineral has been mined quite extensively in Clay County, Alabama, from one end to the other. It is quite...Tree, two miles south of Antimony Peak, near Hollister, San Benito County, California. While it might sound...crusts of stibiconite, a hydrous antimony oxide." COLORADOā"The micro hunter can do well almost within the...Ind. Fortville is in N.W. Hancock County, near the Hamilton County line; the gravel pit is close by,... just over the line in Hamilton County. "For your World News department I am sending you an amethyst |  | | Journal (article/letter/editorial) | | University] at 07:55 02 December 2014 Figure 1. County map of New York State, prepared by William Besse...listed. L O CA L I T I E S B Y C O U N T Y Albany County Indian Ladder: brookite; F. Old Callanan quarry:...11 August 1859: olivinebronzite chondrite. Bronx County Various excavations: chabazite, harmotome, quartz...(amethyst), stilbite; F. Clinton County Au Sable Forks, iron mines north of: microcline (sunstone), magnetite,...calcite, gypsum, microcline, augite, stilbite, titanite, zircon, others; F, C. Columbia County Ancram lead |  | | Catalog/List | | iron, manganese, and titanium) Bladed in quartz; Colorado ... .. ... . ... .... ..... .... ... . AUGITE-See...localities . .. ....... Xlcd groups of pale blue xis; Colorado .. ... ... . . .... . Cleavages, white; Tennessee...XI-prism, pale blue; Colorado. !" to :I", 15Ā¢, or 10 for $1.00. XI-prisms. small; Colorado. Per oz., 50Ā¢. Gemmy...VERITE (gold telluride) Xline in and on rock; Colorado. Specimens from 1 x l" to 2 x 3" at 76,t, $1.00...Rich mass; Colorado. per oz., 60Ā¢ ... .. .............. . ..... 2.50 High grade; Colorado . . . . . |
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