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| THE ARKANSAS RIVER CANYON, FREMONT COUNTY, COLORADO. 3. THE AMETHYST CARBONATITESl E. Wu. HBrNnrcH aNo...Michigon. ABSTRACT The Amethyst carbonatites in 12 Mile Park, Fremont County, Colorado are the northernmost...exomorphic zones of hematitized and feldspathized granite; 2) calcite barite carbonatite and 3) veins of...Mountain Valley in Fremont and Custer Counties, Colorado (Christman el, al., 1959; Singewaldand Brock,...a difierent guise-they were first explored as amethyst deposits (Sterrett, 1909; Sinkankas,1959).Sterrett |
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| 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...I-billion-year-old 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 |
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| 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 |
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| 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 |
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| 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...samples An overview of weathered Pikes Peak Granite within the Pikes Peak batholith, in an area north of |
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| from the Pikes Peak Gtranite Downloaded by [Nanyang Technological University] at 21:40 11 June 2016 ...ā 1 RAYMOND R. BERRY 7513 Tudor Road Colorado Springs, Colorado 80919 ra yber@peoplepc.com S ince the...the late 1880s the pegmatites of the Pikes P&, Colorado, a m have bean yielding fine specimens of smoky...dismay of some mineralogists,collectors of the Pikes Peak pegmatite minerals have long used the name oncgite...goethite inclusions.ā Recent finds of the material in Colorado an both aesthetically pleasing and mineralogically |
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| Tree Root Pocket, Two Point claim, Pikes Peak batholith, Teller County. The Collectorās Edge specimen, Jeff...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 stateās minerals is Colorado Rockhounding, by Voynick (1994). Other published |
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| 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 |
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| 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."...(1883) as having been found "in the disintegrated granite on one of the steep slopes about 4 miles from Manitou...been in the Crystal Park area. The largest fine-quality topaz specimens in Colorado occur in several separate |
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| 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 |
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| Colorado Springs Mineralogical Society Founded in 1936 May 2016 PICK&PACK Vol 56 ...... Number 4 Inside...(at Waynesburg's field station in Florissant, Colorado). He and his wife Nell moved to Lock Haven, Pennsylvania...of the Franklin, New Jersey and Cripple Creek, Colorado districts; his collection currently numbers around...Mining District, Colorado" (2005). After retiring Bob and Nell moved to Florissant, Colorado, where they currently...Preservation.ā COLORADO SPRINGS MINERALOGICAL SOCIETY PO& BOX 2 COLORADO SPRINGS, COLORADO 80901-0002 May |
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| 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..............................203 R. Barnes Pikes Peak Granite......................................217...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 |
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| Denver, Colorado MARK I. JACOBSON Chevron U.S.A., Inc. 700 S. Colorado Boulevard Denver, Colorado 80222...sponĀ sored by the Coors Foundation of Golden, Colorado, and repreĀ sents a significant improvement over...as are expanded exhibits of minerals for which Colorado is famousāamazonite, aquamarine, rhodochrosite...its role in providing educaĀ tional tours for Colorado school children. Plans are also proĀ gressing...in coordination with the Friends of Mineralogy, Colorado Chapter, to provide a forum for amateur and advanced |
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| important miner in the Crystal Peak area north of the town of Florissant in Colorado. In addition to being a...a prospector, miner, and operator of the Crystal Peak Gem Mines, he also mentored others who succeeded...including Jerry Hurianek, whose longtime activities in Colorado are documented in t\vo of his unpublished articles...in 1938 about finding smoky quartz in the Crystal Peak area (Hurianek 1938). Jerry, in turn, passed along...among the finest ever collected from the Crystal Peak area. At that time it was offered at $5,000; an |
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| Crystal Peak area, north of Lake George, Colorado. The claim itself is in Teller County near the Park County...The Rocket mine is within the Pikes Peak batholith, a Precambrian granite between 1.03 billion and 1.05...(Hutchinson 1976). The pegmatites that intrude into the granite are classified as simple pegmatites, unlike the...believed to be slightly younger than the surrounding granite and are far tougher and less eroded. Pockets are...intrusions, at the contact between the soft, decomposed granite and the coarser-grained pegmatites. At the Rocket |
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| superintendent of the IndependĀ ence National Historical Park. His aim was to provide a lasting legacy to the...Philadelphia's IndeĀ pendence National Historical Park. A t this writing, a dediĀ cation ceremony is anticipated...order by state) follow. ā¢ Colorado's block of Pikes Peak Granite seems to be an especially appropriate contribution..."America the Beautiful." ā¢ Connecticut's Stony Creek Granite has been used in many well-known edificesāfor example...New York City. ā¢ The Delaware block, "Brandywine Granite" (actually a gneiss), was supplied by the Hagley |
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| 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...2840507. email: tyeb- OrĀ·tobf'r 200 I ā¢ Fig. 1 Amethyst scepter quartz with a second orangish scepter |
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| - - - - - - - - - - - Mineral Collections 1n Colorado A Supplement to The Mineralogical Record November-December..."Smithsonian packet," Smoky Hawk claim, Florissant, Colorado. Collected in 2008; Dorris Family collection;...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...Thompson George Witters Martin Zinn III and Colorado in the :Mineralogical Record Supplement to The |
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| South Platte District, Colorado Ā· by Wm. B. Simmons and E. Wm. Heinrich Colorado Geological Survey Department...Department of Natural Resources Denver, Colorado I 1980 Front cover: Wide Angle photograph of the Oregon...2~ pegmatite, South Platte pegmatite district, Colorado. This striking example graphically illustrates...RARE-EARTH PEGMATITE$ OF THE SOUTH PLATTE DISTRICT, COLORADO by Wm. B. Simmons, Jr. Department of Earth Sciences...Michigan Ann Arbor, Michigan 48109 CGS LIBRARY Colorado Geological Survey Department of Natural Resources |
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| MINERAL COLLECTING BY CAMPER IN COLORADO By LAWRENCE AND HARRIETTE SCHOPPEE 9 Greenbrier St., Springfield...investigating such a claim? We took our Camper to Colorado and now that state rivals Canada in our list of...campgrounds are available, and many new sites in Colorado are being opened every year. Our sleeping bags...described in Professor Richard M. Pearl's book, "Colorado Gem Trails and Mineral Guide." As in any other...before starting to collect in Colorado. Traveling from Massachusetts to Colorado is a trip in itself but don't |
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| Cornwall, England (Davidson, 1930), Leadville, Colorado (Laughlin and Behre, 1934) and the Cordillera...characteristic peripheral phenomena ("granite aura") of granite masses. Subsequent writers on pegmatites..."Many pegmatites are found in the upper parts of granite batholiths and in their roof." A few early observers...pegmatites as follows: "From the central mass (of granite) great quartz-feldspar dikes radiate. In passing...by the writer (1948) in the Eight Mile Park district of Colorado. Emmons (1940, pp. 23-24) related the |
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| (left). View of Patagonia Mountains, Santa Cruz County, Arizona, in winter, from the approach to the Santo...Scovil of specimens from the authorās collection Amethyst Scepters from the Santo Nino Mine T he Santo...in the Patagonia mining district in Santa Cruz County, Arizona, on the northeast slopes of Mount Washington...Valley of southern Arizona. The actual site for the amethyst-sceptered quartz crystals is not on the Santo...published many articles on mineral collecting in Colorado and is also a frequent speaker at mineral events |
 | Collins, Donley S., Cobban, Robert R., Foord, Eugene E., Murphy, Jack A. (1989) Bibliography for update and revision of U.S.G.S. Bulletin 1114, Minerals of Colorado -- a 100 year record, by Edwin B. Eckel, Part A - Paper copy --Bibliography data file disks. Open-File Report Vol. 1989 (89-206) US Geological Survey doi:10.3133/ofr89206a | Report (issue) |
| Survey Denver, Colorado Department of Geology, Denver Museum of Natural History Denver, Colorado NOTE FOR...revision of U.S.G.S. Bulletin 1114, Minerals of Colorado A 100 year record, by Edwin B. Eckel By Donley...Prepared in cooperation with Friends of Mineralogy - Colorado Chaptar, and the Denver Museum of Natural History...references dealing with the mineralogy of the state of Colorado. It is part of a more than 10 year effort to update...and revise U.S.G.S. Bulletin 1114, Minerals of Colorado: A 100 year record, by Edwin B. Eckel (1961). |
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| MUNTYAN 536 Third Avenue P.O. Box 495 Ouray, Colorado 81427 All photographs by John R. Muntyan of specimens...Hardin County, Illinois, among other localities. Barite also occurs in many localities in Colorado, where...wellcrystallized crystal groups. Colors reported for Colorado barite range from sky-blue to snowwhite to golden...considerable variety for a single mineral species. In Colorado, barite is found in a variety of environments...amounts in many of the mining districts of the Colorado mineral belt as a gangue mineral, it is seldom |
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| 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 |
