 | | Journal (article/letter/editorial) | | 2013 Fluorite in Granitic Pegmatites MARK IVAN JACOBSON 1714 S. Clarkson Street Denver, Colorado 80210...octahe- dral or cubic fluorite crystals perched on earlier-formed minerals. Fluorite is almost always a...purple or green cube of fluorite hanging from a crystal face or nestled on a crystal druse. Figure 2. Index...Index map showing the major worldwide pegmatitic fluorite localities, prepared by William Besse. The numbers...right page). 134 ROCKS & MINERALS Figure 1. Fluorite, 10 × 7.2 × 5.7 cm, from the Conway Granite, near |  | | 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...of localities throughout the Pikes Peak batholith in central Colorado, and many of them provide spectacular...the Pikes Peak batholith (PPB) in central Colorado. Although some minerals, such as fluorite, hematite...Pikes Peak Granite within the Pikes Peak batholith, in an area north of Florissant in Teller County, taken |  | | Journal (article/letter/editorial) | | December 2012 Flgun 1. View from the summit of Pika Peak looking northwest acro88 the cliff’s of Glen Cove...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 “Early, Middle, and Late” Eras. In Colorado we because of the subsequent folding and overthrusting |  | | Journal (issue) | | important miner in the Crystal Peak area north of the town of Florissant in Colorado. In addition to being...being 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others who succeeded...including Jerry Hurianek, whose longtime activities in Colorado are documented in t\vo of his unpublished articles...Minerals in 1938 about finding smoky quartz in the Crystal Peak area (Hurianek 1938). Jerry, in turn, passed...mind, among the finest ever collected from the Crystal Peak area. At that time it was offered at $5,000; |  | | Journal (issue) | | - - - - - - - - - - - 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 |  | | 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? ......................................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...invaluable reference which should provide us with crystal draw ings to illustrate articles for centuries |  | | 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 (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...Wilderness area near Columbine Lake, La Plata County; largest crystal measures 1.25 inches on edge; collected... 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 (article/letter/editorial) | | Root Pocket, Two Point claim, Pikes Peak batholith, Teller County. The Collector’s 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 state’s minerals is Colorado Rockhounding, by Voynick (1994). Other published |  | | Journal (article/letter/editorial) | | YTTRIUM-BEARINGPEGMATITE tsODYNEAR LAKE GEOI{GE,PARK COUNTY,COLORADO* Jnwnr.r.J. Grass ANDIIARRv J. Rosn, Jx., Washington25...Washington25, D. C. and EowrN Ovxn, WoodlandPark, Colorado INrnooucrroN During a visit by Edwin Over to the...a l i t eb o d y . L u m p s o f m a s s i v e fluorite-some that weighed 600 pounds-were common in the...the mine dumps. Examination of these fluorite bodies revealedinclusionsof several mineralsfound to be...be yttrium bearing. The description of the fluorite massesand their associatedfeldspar pegmatite is basedon |  | | 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 (article/letter/editorial) | | 4). It was hoped that by drilling and blasting, crystal pockets underneath the ledges would be uncovered...of the Crystal Peak area, north of Lake George, Colorado. The claim itself is in Teller County near the...the Park County border. The mine is an open pit with four levelscarved into the hillside. Level 2, where...productive. The Rocket mine is within the Pikes Peak batholith, a Precambrian granite between 1.03 billion...such as goethite, were found in these pockets. Fluorite was encountered regularly in both occurrences |  | | 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."...have been in the Crystal Park area. The largest fine-quality topaz specimens in Colorado occur in several...within the large (1,080 mi ) and well-exposed Pikes Peak batholith. The batholith, slightly more than 1 billion |  | | 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 (article/letter/editorial) | | Littleton, Colorado 80125 dkile4@comcast.net Albite and Microcline From the Crystal Peak Area Teller County...County, Colorado A MYSTERY REVISITED F or many years collectors have recovered microcline and albite (variety...specimens from various localities within the Pikes Peak batholith that had unusual irregular hexagonal holes...biotite/Fe-zinnwaldite crystal from the Crystal Peak area, Teller County, Colorado; this crystal was enclosed in...Ten-Percenter claim in the Crystal Peak area north of Florissant in Teller County, Colorado. The contents of this |  | | Journal (issue) | | 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...An unusual specimen from the Flambeau Mine (Rusk County, Wisconsin) is a sheet copper (figure 6). One of |  | | 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...Bacher; Reinhold Bacher photo. Fluorapatite, 3.3-cm crystal, from the Pulsifer quarry, Maine. Collected by...by Federico Pezzotta; Antonio Miglioli photo. Fluorite, 7.4 cm, from the La Barre mine, France. Collected...own favorite experiences is gazing raptly into a crystal pocket just after it has been opened, and all the |  | | Journal (issue) | | 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...devoted to the mines and minerals of Colorado. As most long-time subscribers know, the first in the series |  | | Journal (issue) | | Barnes Whitmore Operator of the Crystal Peak Gem Mines, Teller, Colorado Mark Ivan Jacobson markivanjacobson@gmail...Whitmore is remembered in Colorado as the owner and operator of the Crystal Peak Gem Company, which distributed...distributed uncounted crystal specimens of amazonite - a blue-green colored microcline, and smoky quartz...final hospitalization in 1938. The less than 50 Crystal Peak Gem Company stock certificates that are known...various times in Ohio, Iowa and Illinois. Moving to Colorado In July 1875 Albert Whitmore at the age of 21 |  | | Journal (article/letter/editorial) | | Variety Amazonite Yucca Hill Prospect, Park County, Colorado T H I S I S S U E ' S C O N N O I S S E U...bodies, such as Col orado's Pikes Peak Batholith and the Harney Peak Granite in the Black Hills of South...district, California; the general Pikes Peak area of Colorado; gem pegmatites of the New England states;...the Pikes Peak region of Colorado and include sites in Douglas, E l Paso, Park, and Teller counties.... A review of the more im portant Colorado amazonite localities is given by Eckel (1961), and a complete |  | | Journal (issue) | | Nature & Science 5176 Black Bear Run Littleton, Colorado 801215 Email: centennial87@comcast.net texture...a rare hydrous iron oxalate in the monoclinic crystal system, Fe2+(C2O4) ·2H2O. It was named after Friedrich...California (or those identically named in Nevada, Colorado etc.), the series of adits and stopes collectively...exceedingly small (< 1 mm), necessitating optical single-crystal analysis via a petrographic microscope equipped...millimeters. SEM photos were included to elucidate the crystal form for several of the specimens. Three occurrences |  | 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) | | miarolitic pegmatites of the anorogenic Pikes Peak batholith, Colorado E. E. Foord 1, P. Cern~ z, L. L. Jackson...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...units of the anorogenic Pikes Peak batholith (1.08-1.02 Ga), Colorado range in composition, and follow...(mostly amazonite), and albite, with local topaz or fluorite, and rarely tourmaline (schorl-elbaite). Progressively |  | | Report (volume) | | Minerals of Colorado: A 100- Year Record By EDWIN B. ECKEL GEOLOGICAL SURVEY BULLETIN 1 1 14 A...knowledge____________________________________ Future of Colorado mineralogy______________________________________...mineral localities and metallic mineral deposits of Colorado ________________________________ In pocket III...mineral localities and metallic mineral deposits of Colorado, has not been included in this reprint. Many of...especially Fischer and others, 1946). MINERALS OF COLORADO: A 100-YEAR RECORD By EDWIN B. EcKEL ABSTRACT |  | | Journal (article/letter/editorial) | | MINERALOGY OF THE MOUNT ROSA AREA, EL PASO AND TELLER COUNTIES, COLORADO. II. PEGMATITESI EuceNB B. Gnoss, CaliJornia...the Pikes Peak granite and in related alkalic granites in the Mount Rosa area, west of Colorado Springs...Springs. One is the older calc-alkalic Pikes Peak type; the younger is the alkalic Mount Rosa type. The accessory...pegmatites consists chiefly of radioactive zircon, fluorite, astrophyllite, thorite, and lesser amounts of...aluminofluorides. These dikes intrude both the Pikes Peak and its derivative fayaiite granites along northeast-trending |  | | Book (edition) | | — _ ; COLORADO GEM TRAILS AND MINERAL GUIDE ! ■ : ' BOOKS BY RICHARD M. PEARL Colorado Gem Trails...Mineral Guide Colorado Rocks, Minerals, Fossils America’s 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 ★ COLORADO GEM TRAILS AND MINERAL GUIDE ★ SKETCH MAPS BY MIGNON WARDELL PEARL |
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Dreamtime claim, Crystal Peak, Teller County, Colorado, USA