 | | 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 |  | | 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...different publications; the correct name is Thiebaud (George White 1996, pers. com.). 306 ROCKS & MINERALS |  | | 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-...the interest in this region lies in commercial amazonite collecting; very few study the more esoteric aspects...pegmatites in the Pikes Peak batholith (PPB) in central Colorado. Although some minerals, such as fluorite, hematite |  | | 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...Sentinel and Specimen Rocks; Crystal Park; Glen Cove; Florissant, Lake George, and Crystal Peak; the Tarryall |  | | 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 (article/letter/editorial) | | 36849-5305 Microcline, Variety Amazonite Yucca Hill Prospect, Park County, Colorado T H I S I S S U E ' S C...as amazonite or amazonstone. Although all blue- and green-hued microcline may be termed amazonite, not...not all amazonite is microcline, since several other feldspar species, such as orthoclase and oligoclase...district, California; the general Pikes Peak area of Colorado; gem pegmatites of the New England states; and...several African countries. The list of significant amazonite localities is considerably shorter, although commercial |  | | 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...June 1986, Don Smith discovered an important amazonite pocket, named the “Key-Hole vug,” on the Ten-Percenter...Crystal Peak area north of Florissant in Teller County, Colorado. The contents of this find were among the |  | | 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? ......................................Mountains of Colorado ..................................349 by J. A. Murphy Amazonite from the Pikes...COVER: AMAZONITE with smoky quartz, 10 cm tall, from the Yucca Hill claim, Park County, Colorado. Richard...Natural History for conceiving the idea of a second Colorado issue and for helping a great deal in bringing |  | | Journal (article/letter/editorial) | | IVAN JACOBSON 1714 S. Clarkson Street Denver, Colorado 80210 markivanjacobson@gmail.com No pegmatite...Granite, near Red Stone quarry, Conway, Carroll County, New Hampshire. Henry Minot specimen and photo...Peak, Teller and Park counties, CO, USA Crystal Park–Bear Creek, El Paso County, CO, USA Pikes Peak Granite...Miarolitic topaz, amazonite, phenakite Pikes Peak Granite NYF Miarolitic topaz, amazonite, phenakite References... 3 Mount Antero and Mount White, Chaffee County, CO, USA Mount Antero Granite NYF Miarolitic beryl |  | 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...minerals are quartz, microcline perthite (mostly amazonite), and albite, with local topaz or fluorite, and |  | | Journal (issue) | | - - - - - - - - - - - Mineral Collections 1n Colorado A Supplement to The Mineralogical Record November-December...with amazonite, 11.8 cm, from the "Smithsonian packet," Smoky Hawk claim, Florissant, Colorado. Collected...certificates for mines in the Cripple Creek District, Colorado, in 1898 and 1901. Sponsorship: This special supplement...Collecting in Colorado The Collections: Mel & Pam Bersch Ryan Bowling Ralph Clark Colorado School of Mines...Dorris) Jack & Kaye Thompson George Witters Martin Zinn III and Colorado in the :Mineralogical Record |  | | Other Paper | | Er 1-· N lW f11Ll, <:...Ofd';' UL e,( AMAZONITE FROM THE PIKES PEAK BATHOLITH by Eugen• E. Foord...G•ologica.l Survey Deaver Fedoral Ce�ter Lakewood, Colorado 80225 a..nd Robert F. Ma.rtin Dept. of Geologic�l...PISTOLS .... �---=.. I INTRODUCTION AND HISTORY Amazonite, a bluish-green to greenish-blue variety of microcline...over 110 years. Strictly speaking, the term amazonite (or amazonstone) includes not only green maximum...plagioclase amazoni te. The first description of amazonite from Colorado appears to have been that of Hollister |  | | Journal (issue) | | cavity. The only locality data was given as Blaine County, Idaho. The specimen was probably from the collection...1995), but found no location of ferberite in Blaine County. So I went Fig. 1 Ferberite showing twinning,... microcrystals, Corral Creek, Camas County, Idaho. Continued on page 9 Denver Shows of 2001 Continued...apophyllite (not of heulandite) from a new find in Custer County, Idaho. These pseudomorphs are quite spectacular...News, P .O. Box 2043, Coeur d'Alene, ID 83816-2043 USA Phone: 208-664-2448 Email: lanny@mineralnews.com |  | | 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 |  | | Journal (issue) | | Colorado Springs Mineralogical Society Founded in 1936 December 2015 PICK&PACK Vol 55 .... Number 10...Mark Lemesany COLORADO MINERALOGICAL SOCIETYPICK PO BOX 2 COLORADO SPRINGS, COLORADO 80901-0002 December...Senior Center is located at 1514 North Hancock in Colorado Springs. For more information on any of the sub-groups...combined with the gem & mineral show); Boulder County Fairgrounds, Exhibit Building, 9595 Nelson Rd....Modreski on “Colorado Mineral Collecting” at 3 p.m. on Sunday. Thurs., Dec. 17, 6:00 p.m., Colorado Scientific |  | | 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) | | Our Lucky Monday – a great collecting story Colorado, USA J. Scovil photo. Issue #6 The Collector’s...pocket, it could be the end of our search for amazonite with smoky quartz. Monday morning, 13 June, things...photo. The Pikes Peak region has been producing amazonite and smoky quartz specimens as well as other pegmatite...smoky quartz with amazonite from Lucky Monday pocket, Smoky Hawk claim, Colorado, USA. 8.2 cm in length...length. Spirifer collection. amazonite crystals in association with deep black smoky quartz. This discovery |  | | Journal (article/letter/editorial) | | and one from southern California (Byron Weege, George Morgan, and Bill and Jonina Pogue) banded together...The intent of the partnership was to search for amazonite and smoky quartz miarolitic pockets beneath the... north of Lake George, Colorado. The claim itself is in Teller County near the Park County border. The...pattern emerging as to color or crystal form. PARK CO.ITELLER CO. I I CRYSTAL PEAK Figure 2. Location...written about the ratio between microcline and amazonite occurrences in the Pike's Peak region (see Foord |  | | Journal (article/letter/editorial) | | both structurally bound HrO and Pb impurities. Amazonite color is controlled by either (1) an absorption...blue-greenvarieties of microcline and orthoclase (amazonite) is radiation-induced (Przibram, 1956,p. 253)...intensity of an ultraviolet absorption band in amazonite,attributable to a Pb2+ transition, increasedupon...of color and weight loss during dehydration of amazonite (Plyusnin, 1969) becauseneither H2O nor OHalonecan...less 794 HOFMEISTER AND ROSSMAN: COLORING OF AMAZONITE precisedue to baselineapproximation,the data frorn |  | | Journal (article/letter/editorial) | | 10:40 30 December 2014 GODSEND CLAIM, LAKE GEORGE, COLORADO Figure 1. View of the terrible damage caused...in June 2002 along Crystal Creek, where fine amazonite and smoky quartz have been collected since the...photo. RAYMOND R. BERRY 7513 Tudor Road Colorado Springs, Colorado 80919 rayber@peoplepc.com Figrtre 5....4314 Woodland Park, Colorado 80866 Raymond R. Berry is an active member of the Colorado Springs Mineralogical...Mineralogical Society and the Colorado Chapter of Friends of Mineralogy. His most recent article for Rocks |  | | 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... 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) | | finely powdered obsidian rock obtained from Clear Lake in Oregon. It is used to validate the methods and...abandoned mine sites in the mountains of central Colorado. A unit of SRM 2780a consists of approximately...6 (Right) - Sheet Copper – Flambeau Mine (Rusk County, WI) Figure 2—Dr. Weis’s Personal Memorabilia...Figure 7—Manganoan Calcite – Montreal Mine (Iron County, WI). Figure 3 (left) - “Wonderful World of Agates”...mineral specimens from the Montreal Mine (Iron County, Wisconsin). Most of the specimens came from the |  | | 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 (issue) | | Weber by the Natural History Museum of Los Angeles County (see February 2005 Mineral News - Ed.). Between...noted for the mounted specimens acquired by the LA County Museum, the collection provides a solid reference...Review: Rockhounds 1he Movie, 21-10:15. Gardinos, George: Kerhonkscn, N.Y. Sclenilc Localily Gone, 21-8:11...Rosenzweig (1925-2005), 21-12:5. Jacobson, Mark I.: Colorado Pioneer Nelson "Neis" D. Wanemaker: Prospec1or...Origins by H. Wenk & A. Bulakh, 21-1:9. Los Angeles County Musuem Acquires Oulslanding Micromount Collection |  | | Journal (issue) | | Operator of the Crystal Peak Gem Mines, Teller, Colorado Mark Ivan Jacobson markivanjacobson@gmail.com...com A. B. Whitmore is remembered in Colorado as the owner and operator of the Crystal Peak Gem Company...which distributed uncounted crystal specimens of amazonite - a blue-green colored microcline, and smoky quartz...1856), Walter (b. I 859), Mary Ella (b. 1866) and George Comings (b. I 878). Since his father was a minister...various times in Ohio, Iowa and Illinois. Moving to Colorado In July 1875 Albert Whitmore at the age of 21 |
|
Lake George, Park County, Colorado, USA