 | | 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 (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) | | 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 America’s...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) | | Jean COWMAN & Philip PERSSON Tribute Pocket, CO, USA Mineral photography: James Elliott INTRODUCTION...partnership, which is actually quite uncommon ... Topaz from the Tribute Pocket, Agnus Dei claim; 5.9 cm...a freshly mined topaz crystal from the Tribute Pocket, Agnus Dei claim, Colorado, USA. HISTORY: DISCOVERY...DISCOVERY AND RE-DISCOVERY Topaz has been known from the Pikes Peak area since the early twentieth century...across a reference to “magnificent peachy-pink topaz crystals up to 5 cm” Continued on page 6 Pederneira |  | | Journal (article/letter/editorial) | | Vol. 20 SOCIETY OF' AMERICA MAY, 1935 No.5 COLORADO PEGMATITES KBNNBTU K. Lauons, Unioersity of Kansas...in every county 'of Colorado along the Front Range of the Rocky Mountains from Larimer County on the Wyoming...Wyoming line to Custer County in the south-centralpart of the state, and in scatteredpre-Cambrianareas...The pre-Cambrian schists and granites of Larimer County are cut by numerous pegmatite dikesl which have...exhibiting an ore mineral phaseoccur in Boulder County.3JeffersonCounty contains both tourmaline and muscovite |  | | Journal (issue) | | I. Jacobson, Denver, CO Anthony R. Kampf, l.A. County Museum of Natural History, CA Virgil W. Lueth,...across a local area net\,vork. Subscription offices: USA/North America: Taylor & Francis Group, LLC, 530 Walnut...Copyright Clearance Center (www.copyright.com) in the USA or the Copyright Licensing Agency (www. cla.co.uk)...86 Chips from the Quarry Connoisseur's Choice: Topaz from Granite Pegmatites, Limoeiro Mine, Virgem da...Brazil: At the Natural History Museum of Los Angeles County, Carl A. Francis and Aaron Celestian 89 Who's |  | | Journal (issue) | | 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...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 (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) | | 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...highways. Latest information is given on local tra\'el and collecting conditions and land ownership, so...Swallow, Publisher) 2679 South York Street Denver, Colorado 80210 - , =· - ·, BOOKS BY RICHARD M. PEARL...PEARL Exploring Rocks, Minerals, Fossils in Colorado America's Mountain: Pikes Peak and the Pikes Peak |  | | Book (edition) | | — _ ; COLORADO GEM TRAILS AND MINERAL GUIDE ! ■ : ' BOOKS BY RICHARD M. PEARL Colorado Gem Trails...Trails and Mineral Guide Colorado Rocks, Minerals, Fossils America’s Mountain: Pikes Peak and the Pikes...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 |  | | 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 |  | | Report (issue) | | 14: Topaz Perfect Cleavage ISBN 978-0-9790998-9-2 Publisher Lithographie, LLC Denver, Colorado, USA...Lithographie, LLC P.O. Box 11613 • Denver, CO 80211 • USA Phone 1.303.495.5521 • Fax 1.303.482.1238 www.lithographie...United States of America Photo Credits Cover: Topaz, 3.5 cm tall Capao Mine, Ouro Preto, Minas Gerais...Sigerman collection Robert Weldon photo Above: Topaz, 5.5 cm tall El Chalten, Santa Cruz, Argentina Scott Rudolph...brooch/pendant is set with topaz from three different localities. Two Brazilian "Imperial" topaz gems make up the |  | | Journal (issue) | | collection, page 105; Brown Topaz- Barry and Beth Kitt collection, page 150; Blue Topaz-Lyda Hili collection...ticket to the booming silver-rush town ofLeadville, Colorado. Eventually rnoving on through New Mexico and...put in the ground brought to the surface a huge crystal of gadolinite, and for a short time I enjoyed the...most pleasant excitement, bringing out crystal after crystal from the decomposed feldspar, until the...celestine crystal groups found at various sites in the Gien Rose Limestone formation of Lampasas County. Lampasas |  | | 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 (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 |  | | 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 |  | | Book (volume) | | ...........................................59 Colorado ...............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ......................................................................22 Arizona County Map ................................................................................49 Arkansas County Map .......................................... |  | | Book (volume) | | Hallelujah Junction, Nevada; blue, cushion cut topaz (25.30 ct), Ramona, California; brownish yellow...56 ct), Sweet Home Mine, Colorado; colorless scheelite (19.66 ct), Kern County, California; octagonal...Vivid blue matched benitoite gems from San Benito County, California, consisting of 52 benitoites and 75...Ellis, [D; Jeannette B. Carillo, Gem Center USA, EI Paso, TX; Gary Christopher, The Prospectors Cache...James D. Lindberg, Las Cruces, NM; Jack Lowell, Colorado Gem & Mineral Co., Tempe, AZ; Steven & Lorna Lukinuk |  | | Book (volume) | | _— ’* : i mine in. q)! Y eit iia -el ~~ a a 7 : 7 ¢ z = NTs tbee _ = hee Dy...Isle Royale National Park were rendered by Superintendent John G. Lewis and Park Historian Lloyd Abelson...Barron of the Southern Gem and Mineral Company of El Paso, Texas. Information on the Virgin Valley opal deposits...Kobuk jade locality. Descriptions of San Diego County, California, gemstones and the mines in which they...the generous assistance of many residents of that county. My special thanks are extended to Elbert H. McMacken |  | | Book (volume) | | ...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |  | | Book (volume) | | ...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy | | | Book (volume) | | Hallelujah Junction, Nevada; blue, cushion cut topaz (25 .30 et), Ra1nona, Caufornia; brownish yellow...rhoColorado; eolorless scheelite (19.66 cc), Kern Cowny, California;...Vivid blue matched benitoite gems from Sai, Benito County, California, consisting of 52 benitoites and 75...Ellis, ID; Jeannette B. Carillo, Gen1 Center USA, El Paso, TX; Gary Christopher, The Prospectors Cache...James D. Lindberg, Las Cruces, NM; Jack Lowell, Colorado Ge1n & Mineral Co., Tempe, AZ; Steven & Lorna |  | | Book (edition) | | describes sites under of the nearest town and county. and the many maps included book contain such...test samples in the field for color, hardness, crystal formation, transparency, and other distinguishing...Diamond M Tourmaline ^P Ruby. Sapphire O Quartz crystal ^J^ Garnet __ Azurite, Malachite, Chrysocolla...in rock and being the first to see a sparkling crystal fresh from nature's hand. And the gem hunter gains...clues toid garnet are these: 1. Hardness. 2. Crystal structure 3. Cleavage — — the innate shape |  | | Book | | information b Book review c Crystal morphology information d Crystal drawing ff Continues on following...193-256 137-208 129-192 209-264 193-256 [ [ COLORADO-Ill] 177-256 121-184 89-168 1-120 1-88 [ ...177-256 185-280 169-248 [ 425-528 337--400 COLORADO-II] 321--400 337--400 ARIZONA-Ill] 337--400...69-132 65-128 1-64 11 / 1980 20 I 1989 [ COLORADO-I] [ 289-352 385-448 [ AUSTRALlA] 353-504...Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN |  | | Journal (issue) | | TOPAZ, I J.INERALOGICAL RECORD JANUARY-FEBRUARY 1995 • VOLUME 26 NUMBER 1 • $10 Wayne & Dona Leicht...England Richard C. Erd U.S. Geological Survey Menlo Park, CA Steven R. Morehead Riverside, CA Donald R. Peacor........ 5 by M. A. Menzies Pink topaz from the Thomas Range, Juab County, U ta h ........................Lichte & P. H. Briggs FM-TGMS-MSA Symposium on topaz...................................................Columns Notes from the editor by W. E. Wilson TOPAZ, COVER: TOPAZ crystals to 4 cm, on matrix, from Ghundao |
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Agnus Dei claim, Cameron Cone, Crystal Park, El Paso County, Colorado, USA