 | | Journal (article/letter/editorial) | | IVAN JACOBSON 1714 S. Clarkson Street Denver, Colorado 80210 markivanjacobson@gmail.com No pegmatite...albite, and smoky quartz are enhanced by a purple or green cube of fluorite hanging from a crystal face or...or nestled on a crystal druse. Figure 2. Index map showing the major worldwide pegmatitic fluorite localities...Granite, near Red Stone quarry, Conway, Carroll County, New Hampshire. Henry Minot specimen and photo...significance Crystal Peak, Teller and Park counties, CO, USA Crystal ParkâBear Creek, El Paso County, CO, USA |  | | 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...found in pegmatites in the Pikes Peak batholith (PPB) in central Colorado. Although some minerals, such...Pikes Peak Granite within the Pikes Peak batholith, in an area north of Florissant in Teller County, taken |  | | 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...some reporting that these holes once contained smoky quartz crystals that had been selectively etched out...biotite/Fe-zinnwaldite crystal from the Crystal Peak area, Teller County, Colorado; this crystal was enclosed in |  | | Journal (article/letter/editorial) | | December 2012 Flgun 1. View from the summit of Pika Peak looking northwest acro88 the cliffâs 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 âEarly, Middle, and Lateâ Eras. In Colorado we because of the subsequent folding and overthrusting |  | | 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...uncounted crystal specimens of amazonite - a blue-green colored microcline, and smoky quartz throughout...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 (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...Rocks & Minerals in 1938 about finding smoky quartz in the Crystal Peak area (Hurianek 1938). Jerry, in turn...Florissant and Lake George for amazonite and smoky quartz for the past 150 years, but few have had the |  | | 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) | | 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) | | - - - - - - - - - - - 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 supplement...Collecting in Colorado The Collections: Mel & Pam Bersch Ryan Bowling Ralph Clark Colorado School of Mines |  | | 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...have been in the Crystal Park area. The largest fine-quality topaz specimens in Colorado occur in several |  | | 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 |  | | Book (edition) | | methods and by checking their color, hardness, crystal formations, transparency and other characteristics...T'S fun and profitable to hunt gems 1 Typical crystal forms of prominent minerals Characteristics of...gem stones mon dull are as hard or harder than quartz, a com- mineral everywhere present as dust which...Hardness Scale 6. Orthoclase 1. Talc 2. Gypsum 7. Quartz Topaz Corundum 10. Diamond 3. Colcite 8. 4...Your will scratch orthoclase feldspar but not quartz. In making hardness appears to be a scratch paper |  | | 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 stateâs minerals is Colorado Rockhounding, by Voynick (1994). Other published |  | | Journal (article/letter/editorial) | | partnership was to search for amazonite and smoky quartz miarolitic pockets beneath the pegmatite ledges...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 |  | | Journal (issue) | | Julius Weber Mamaroneck, New York COLORADO ISSUE #2 Articles Colorado locality index.............................. 323 by B. L. Muntyan Whatâs new in Colorado minerals? ......................................of Colorado ..................................349 by J. A. Murphy Amazonite from the Pikes Peak batholith...AMAZONITE with smoky quartz, 10 cm tall, from the Yucca Hill claim, Park County, Colorado. Richard A. Kosnar...invaluable reference which should provide us with crystal draw ings to illustrate articles for centuries |  | | Journal (issue) | | Fluorite on Amazonite 7.5 cm, from the Smoky Hawk claim, Colorado. Collected by the Dorris family; Tom...Bacher; Reinhold Bacher photo. Fluorapatite, 3.3-cm crystal, from the Pulsifer quarry, Maine. Collected by...own favorite experiences is gazing raptly into a crystal pocket just after it has been opened, and all the...classic locality for spectacularly large apophyllite crystal clusters, which still rank as some of the largest...cleaned off the thaumasite to expose the entire crystal. It is free of damage thanks to the protective |  | | Journal (issue) | | Colorado Springs Mineralogical Society Founded in 1936 July 2015 PICK&PACK Vol 55 ...... Number 6 Inside...Jacobson Topic: Pegmatitic Rare-earth Minerals of Colorado: Species and Identification Refreshments provided...by the Faceting Group CSMS Calendar Pg 2 Crystal Peak Gem Co Pg 4 Gravel Pit Pg 6 New Fossil Laws...Friends of Mineralogy, Colorado Chapter. Mark has collected rare earth minerals in Colorado, Texas, Wyoming...Minerals of Colorado: Species and Identification Most of the pegmatitic rare-earth minerals in Colorado are found |  | | 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 |  | Foord, E. E., ÄernĂœ, 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...crystallized micas. Principal associated minerals are quartz, microcline perthite (mostly amazonite), and albite |  | | Book (edition) | | â _ ; COLORADO GEM TRAILS AND MINERAL GUIDE ! â : ' BOOKS BY RICHARD M. PEARL Colorado Gem Trails...Mineral Guide Colorado Rocks, Minerals, Fossils Americaâs 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 â
COLORADO GEM TRAILS AND MINERAL GUIDE â
SKETCH MAPS BY MIGNON WARDELL PEARL |  | | Journal (article/letter/editorial) | | DESIRED PLEASE SEND THEM I N . Abbreviation*: xlâcrystal xledâcrystallized flâfluoresces ARIZONA â The...beautiful whitish chalcedony nodules (covered with quartz xls) I collected on the Juan Miller Campground...other. Wynne, in southern Cross County, is in eastern Arkansas. COLORADOâA loose but beautiful bright green...green amazonstone (amazonite) crystal was sent in by Crystal Gallery, 20 South Garrison, Linwood, Colo...listed in our December R&M ad." ânote with the crystal. To add to its attractiveness the crysinch tal |  | | Report (volume) | | distinguished by their, physical properties: color, crystal form, cleavage, parting, hardness, specific gravity...the ruby, sapphire, spinel, emerald, rutile, and quartz of gem quality have been synthesized. The best...important aids in identifying gems. They are: color, crystal form, cleavage, parting, hardness, specific gravity...in most minerals. Most gem stones have certain crystal systems that form under favorable conditions of...particular atomic arrangement results. The six crystal systems in which gem stones may form are: isometric |  | | Book (edition) | | COLO RAD O GEM T RAILS t.lilky quartz crystals, Ow-ay. Katherine H . Jensen. AND MINERAL GUID E RICHARD...MILEAGE L OGS. REVISED EDITION Revised Edition, COLORADO GEM TRAILS AND MINERAL GUIDE HICllAHD :--1. PEARL...an extensive „em and mineral collecting tour 01 Colorado, revealing the interesting places where Nature...Swallow, Publisher) 2679 South York Street Denver, Colorado 80210 - , =· - ·, BOOKS BY RICHARD M. PEARL...Minerals, Fossils in Colorado America's Mountain: Pikes Peak and the Pikes Peak Region Seven Keys to |  | | 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 |  | | Journal (article/letter/editorial) | | 04:13 19 December 2014 Mount Antero, Chaffee County, Colorado A s virtually every collector knows, many...are found in certain pegmatites, granite bodies, quartz veins, and metal deposits. The pockets of pegmatites...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)...localities, and, when colorless, phenakite can resemble quartz. Phenakite exhibits a Mohs hardness of 7.5â8 and |
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Smoky Hawk claim, Crystal Peak, Teller County, Colorado, USA