 | | Journal (issue) | | Pegmatites in the Pikes Peak Batholith, Central Colorado Daniel E. Kile Research Associate, Denver Museum...Nature & Science 5176 Black Bear Run - Littleton, Colorado 801215 Email: centennial87@comcast.net were sparse...throughout the Pikes Peak batholith in central Colorado, and many of them provide spectacular thumbnail-...pegmatites in the Pikes Peak batholith (PPB) in central Colorado. Although some minerals, such as fluorite, hematite...batholith, in an area north of Florissant in Teller County, taken prior to the arsoncaused 2002 Hayman fire |  | 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...crystallized micas. Principal associated minerals are quartz, microcline perthite (mostly amazonite), and albite |  | | 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."...longest dimension, associated with feldspar, smoky quartz, and zircon. The large fragment was said to...area. The largest fine-quality topaz specimens in Colorado occur in several separate and distinct localities |  | | 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...some reporting that these holes once contained smoky quartz crystals that had been selectively etched out...Crystal Peak area, Teller County, Colorado; this crystal was enclosed in quartz, preserving its integrity...Crystal Peak area north of Florissant in Teller County, Colorado. The contents of this find were among the |  | | Journal (article/letter/editorial) | | anotlrer by the northeust-southwest-treiiiliii~ Mullen Creek-Nash Fork Shc;ir Zoiic. The older northernmost province...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 |  | | Journal (article/letter/editorial) | | Although Colorado may be most noted for rhodochrosite or amazonite, the many varieties and associations...associations of quartz found throughout the state rank it as one of the premier worldwide localities for that...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...for about 750 known mineral species.* Of these, quartz is one of the most desirable from a collector's...to Minerals of Colorado: A 100-Year Record (Eckel, 1961). 374 ROCKS & MINERALS Quartz was a familiar |  | | 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 |  | | 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 |  | Brigatti, Maria Franca, Lugli, Cristina, Poppi, Luciano, Foord, Eugene E., Kile, Daniel E. (2000) Crystal chemical variations in Li- and Fe-rich micas from Pikes Peak batholith (central Colorado) American Mineralogist, 85 (9) 1275-1286 doi:10.2138/am-2000-8-920 | Journal (article/letter/editorial) | | Fe-rich micas from Pikes Peak batholith (central Colorado) MARIA FRANCA BRIGATTI,*,1 CRISTINA LUGLI,1 LUCIANO...Italy 2 United States Geological Survey, Denver, Colorado 80225, U.S.A. ABSTRACT The crystal structure...Precambrian, anorogenic Pikes Peak batholith, central Colorado, were determined by single-crystal X-ray diffraction...anorogenic Pikes Peak batholith (PPB), central Colorado. The PPB is a result of a complex magmatic history...located in the southern Front Range of Colorado, west of Colorado Springs and south and southwest of Denver |  | | 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... .·.·01orado Spgs :•: ,·; enne Mtn Cripple Creek ( ,�::.� ..:-:::-: .·.•:-� r. _.• . ,�,!,t-i/f |  | | Journal (issue) | | 2008 Table of Contents Collecting Minerals in Colorado - Peter Modreski ...........................Pg...Mining Update .......................... Pg. 20 Colorado Fossil Woods - Frank Daniels ............................................Pg. 28 Chalk Creek Feldspar Field Trip - Justin Zzyzx ........................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 |  | | Journal (article/letter/editorial) | | and quartz, 9.9 cm across, Tree Root Pocket, Two Point claim, Pikes Peak batholith, Teller County. The...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 (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 (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...the term "topaz" in reference to the olivines, quartz, and other Topaz crystals can be extraordinarily...gold-color quartz ("citrine") is often labeled "topaz quartz" and brown, smoky quartz is sold as "smoky topaz...Fossil specimen, Scovil photo Middle left: Topaz and quartz, 2.7 cm tall; Ouro Preto, Minas Gerais, Brazil; |  | | Journal (article/letter/editorial) | | Clear Creek County. Figure 2 (right). Green fluorite encrusted with quartz on a plate of quartz, from...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 (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...AMAZONITE with smoky quartz, 10 cm tall, from the Yucca Hill claim, Park County, Colorado. Richard A. Kosnar...Natural History for conceiving the idea of a second Colorado issue and for helping a great deal in bringing |  | | Journal (issue) | | Crystal Peak area north of the town of Florissant in Colorado. In addition to being a prospector, miner, and...including Jerry Hurianek, whose longtime activities in Colorado are documented in t\vo of his unpublished articles...wrote for Rocks & Minerals in 1938 about finding smoky quartz in the Crystal Peak area (Hurianek 1938). Jerry...Florissant and Lake George for amazonite and smoky quartz for the past 150 years, but few have had the...substantial cabinet-size combination of amazonite and smoky quartz, composed of large, well-formed crystals associated |  | | Journal (issue) | | stations at Minerals Junior Education Day, or Spring Creek Day from a few years ago. Please contact Dave Glick...Gem & Mineral Club News June 2019 Now retired to Colorado, Dr. Carnein was an active member of NMS when...that are 2 cm across surrounded by finer grained quartz and potassium feldspar grains that are 5 mm across...occur at the Devils Hole mine, in Fremont County, Colorado). More typically, they are on the order of...garnet (dark brown). Devils Hole mine, Fremont County, Colorado. (Carnein photo and collection) page 4 |  | | Journal (issue) | | - - - - - - - - - - - Mineral Collections 1n Colorado A Supplement to The Mineralogical Record November-December...com Frontcover Smoky quartz with amazonite, 11.8 cm, from the "Smithsonian packet," Smoky Hawk claim, Florissant...Florissant, Colorado. Collected in 2008; Dorris Family collection; Jeff Scovi l photo. Backcover: Collectible...certificates for mines in the Cripple Creek District, Colorado, in 1898 and 1901. Sponsorship: This special...Collecting in Colorado The Collections: Mel & Pam Bersch Ryan Bowling Ralph Clark Colorado School of Mines |  | | Journal (issue) | | amazonite chips. whose color rivals the best from Colorado and Russia. Having trave led oft en in Namibia...lorandile, calcite, realgar, orpiment, flu orite, quartz. stibnite, s tibiconite, s ulfur and othe r species...and frequently found attached to lorandite and quartz replaced host rock. (Continues o n page 3) 2...that has been a prolific source of dioptase on quartz w ith plancheite. The few specime ns I saw indicate...and I wonder Helvite crystals to 8 mm on 14 cm quartz matrix whether it is an from Navegador Mine, Conselheiro |  | | Journal (issue) | | New Hampshire. that are dominated by small smoky quartz crystals. small white albite crystals. and pale...o f calc ite and willemite but still nice. The quartz veins and granites from o ld m etal mines a lso...One large piece of feldspar (7 by 5 inches) has quartz with intergrowths w ith the fe ldspar. Much of...and mineral history enthusiast. $24.00 per year in USA $30.00 per year elsewhere Matrix Publishing Company...News, P.O. Box 2043, Coeur d'Alene, ID 83816-2043 USA Phone: 208-659-3035 Email: lream@mineralnews.com |  | | Journal (article/letter/editorial) | | (a) Blue, type B amazonite #5 from Lake George, Colorado. The finely spaced dots indicate where the alpha...Medium grecn amazonite #32 trom peatl, Routt County, Colorado. The spectraare the superpositionof the B...t{hite perthite g e m mP Ya r t s 15057 t{igwan Creek,C0 7.5BG9l? Pale blue' turbid mottled Perthite...u e t u r b i d Perthite D[{NH- l,figwam 10934 Creek,C0 7.58G7/7 Blue zoned Perthite (e9 ( 95 7.58G6/8...selected faces 12 1 5 0 2 0 L a k e G e o-r g e Colorado 7 . 5 8 G 7 1 8B ' l u et u r b i d Perthite |  | | 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,...Delta Bravo Denver Box Co. Diversified Minerals Dry Creek Minerals E & R Crystals Eastern Minerals - Czech...Gems Dreamstar Productions Earth Enterprises Elk Creek Fossils Extinctions/Still Life Facop s - Spain Foothills...Chilon, Nerchinsk district, Siberia. 12 = Nathrop, Colorado. 6 The Mineralogical Record, volume 26, January-February |  | | Book | | AFRICA widely in Litchfield County, where good crystals were taken from quartz veins in a variety of metamorphic...Litchfield, where a mass of white quartz on a ridge had once been mined for quartz, and large ilmenite masses...ilmenite crystals to 7 .5 cm in matrix of massive quartz from these dumps-adding that, in his judgment,...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 |  | | Book (volume) | | 56 ct), Sweet Home Mine, Colorado; colorless scheelite (19.66 ct), Kern County, California; octagonal...Vivid blue matched benitoite gems from San Benito County, California, consisting of 52 benitoites and 75...members. Searches could be confined to terrains and creek beds that expose vil Preface types of rocks...Cantlin, Ellis, [D; Jeannette B. Carillo, Gem Center USA, EI Paso, TX; Gary Christopher, The Prospectors Cache...James D. Lindberg, Las Cruces, NM; Jack Lowell, Colorado Gem & Mineral Co., Tempe, AZ; Steven & Lorna Lukinuk |
|
