 | | Journal (article/letter/editorial) | | IVAN JACOBSON 1714 S. Clarkson Street Denver, Colorado 80210 markivanjacobson@gmail.com No pegmatite...icing on the more spectacular crystals of beryl, topaz, and tourmaline. Even the common minerals of microcline...cube of fluorite hanging from a crystal face or nestled on a crystal druse. Figure 2. Index map showing...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 (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...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) | | COLORADO TOPAZ Topaz, Al Si0 (F,OH) is one of Colorado's better known gem minerals. Though Col orado...orado topaz may not compare in size with that found in Brazil, gemmy crystals up to 4 inches have been found...(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 |  | | 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) | | Root Pocket, Two Point claim, Pikes Peak batholith, Teller County. The Collectorâs 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 stateâs minerals is Colorado Rockhounding, by Voynick (1994). Other published |  | | 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) | | 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) | | - - - - - - - - - - - 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) | | abandoned mine sites in the mountains of central Colorado. A unit of SRM 2780a consists of approximately...6 (Right) - Sheet Copper â Flambeau Mine (Rusk County, WI) Figure 2âDr. Weisâs Personal Memorabilia...Figure 7âManganoan Calcite â Montreal Mine (Iron County, WI). Figure 3 (left) - âWonderful World of Agatesâ...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 (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...museum and private collections, as do somewhat rarer topaz, garnet, and phenakite specimens. Perhaps Americaâs...aquamarine localities, Mount Antero, Chaffee County, Colorado, was highlighted by Jacobson and Lees (2008)...and other veins. Commonly associated minerals are topaz, beryl, Dr. Robert B. Cook, an executive editor |  | | 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...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 (issue) | | Carlson, Mark J. Elder, Audrey E. Smith P.O. Box 234 Crystal Falls, Michigan 49920 shawncarlson@hotmail.com...Dam gold prospect is located in central Dickinson County, Michigan, approximately ten kilometers north of...the dominant exposed bedrock in this part of the county. Excavated near the tum of the 20th century, the...obvious even when visiting some of the Garland County mines. I also planned to do some Magnet Cove collecting...quartzite bluffs. In 2005, two noteworthy quartz crystal pockets were discovered approximately 210 meters |  | | 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; |  | | 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...6. Orthoclase 1. Talc 2. Gypsum 7. Quartz Topaz Corundum 10. Diamond 3. Colcite 8. 4. Fluorite...by the angles at which their plane surfaces (crystal faces) are placed with respect to one another...lopsided by the de- fun and profitable 3 TYPICAL CRYSTAL FORMS OF PROMINENT MINERALS BERYL CHIASTOLITE |  | | Journal (issue) | | Gold Mines Middle Buttes Volcanic Complex Kern County, California Allan R. Blaske allan.blaske@gmail...volcanic complex is located in southeastern Kern County, approximately 9 miles southwest of the town of...Gold Mines, Middle Buttes Volcanic Complex, Kem County, California, Mineral News, Vol. 34, No. 4, April...dome-hosted epithennal precious metal deposit, Kern County, California: Unpub. M.Sc. thesis, Michigan Tech... L., and Brady, J, 1990, Cactus Gold Mine, Kem County, California, California Geology, April 1990, p |  | | 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 |  | | 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) | | as arsenopyrite, wolframite-ferberite, apatite, topaz, or scheelite-are actively sought by collectors...subconchoidal to uneven fracture. Its luster on crystal faces is usually adamantine because of its high...the Martin prospect and Bennett quarry in Oxford County. Good crystals up to 25 mm have been found with...crystals up to 1 cm at the Gillette quarry, Middlesex County, Connecticut. Cassiterite as small crystalline...Conway Granite north of Moat Mountain, Carroll County, New Hampshire. Good cassiterite specimens, a few |  | | 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 |  | | Book (edition) | | 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...Atlas of Colorado American Gem Trails Nature As Sculptor: A Geologic Interpretation of Colorado . Scenery |  | 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...perthite (mostly amazonite), and albite, with local topaz or fluorite, and rarely tourmaline (schorl-elbaite) |  | | 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 (issue) | | Discovery of Gem-Grade Chrysocolla From Ontonagon County, Michigan Tom Rosemeyer datolite@charter.net This...for the week at the Minesota mine in Ontonagon County and mineral collect this area during part of the...Schoenfuss detecting al the Quincy mine, Houghton County, Michigan in August 2018. He has made several important...chunk of crystalline cuprite that contained small crystal vugs. He also started to find small chips of blue-green...conglomerate and vugs in cuprite. beautiful spherical crystal aggregates of needle-like malachite were found |  | | Report (volume) | | distinguished by their, physical properties: color, crystal form, cleavage, parting, hardness, specific gravity...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...cleavage, surfaces are parallel to some of the crystal faces of some gem stones. For example, diamonds |
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