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| 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...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 |
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| 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 |
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| MILEAGE L OGS. REVISED EDITION Revised Edition, COLORADO GEM TRAILS AND MINERAL GUIDE HICllAHD :--1. PEARL...an extensive ¼em 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 |
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| the summit of Pika Peak looking northwest acro88 the cliffâs of Glen Cove to South Park and the Tarryall...Ihe Pikn P c i l Balhdilh dates for rocks in this area rnngc from I .7 to I .8 billion years. The zone...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 |
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| 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 |
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| 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 |
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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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| 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 |
 | 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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| Prepared in cooperation with the Colorado Geological Survey for the United States Department of Agriculture...Service Development of Industrial Minerals in Colorado Circular 1368 U.S. Department of the Interior...Survey Development of Industrial Minerals in Colorado By Belinda F. Arbogast, Daniel H. Knepper, William...John S. Dersch Prepared in cooperation with the Colorado Geological Survey for the United States Department..., 2011, Development of industrial minerals in Colorado: U.S. Geological Survey Circular 1368, 87 p. Library |
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| Our Lucky Monday â a great collecting story Colorado, USA J. Scovil photo. Issue #6 The Collectorâs...known as âTwo Pillarsâ. T. Dorris photo. The Pikes Peak region has been producing amazonite and smoky quartz...miarolitic cavities (pockets) in the decomposed Pikes Peak granite. Beginning in 2000, Joe discovered an extensive...from Lucky Monday pocket, Smoky Hawk claim, Colorado, USA. 8.2 cm in length. Spirifer collection. amazonite...Editors: Paul Cragan (USA John Veevaert (USA) Associated Photographer: Jeff Scovil (USA) Contact: tom@spiriferminerals |
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| Denver, Colorado, USA Š 2011 by Lithographie, LLC P.O. Box 11613 ⢠Denver, CO 80211 ⢠USA Phone 1.303...Topaz ALFREDO PETROV & JOHN RAKOVAN 34. Colorful Colorado DAVID W. BUNK 42. Mongolian Topaz: The Gorkhi...and chromium can substitute for aluminum in the crystal structure. Ideal "fluortopaz" (Al2SiO4F2) would...lighter and larger than fluorine. Crystals and Crystal Structure Crystals are orthorhombic and are typically...dipyramidal with point group symmetry 2/m 2/m 2/m. Crystal structure consists of layers of oxygen, fluorine |
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| Boots on the ground in the Black Hills Rockhound Area. By Bill Rozday 20 Find jagged quartz crystals...Parting Shot...................... 82 Part II: Peak production came at a steep price. By Bob Jones Find...Wulfenite from the Red Cloud (photo credit)mine (La Paz County), Arizona, is world famous. (3.9 cm high) Jeff...in quantity. Arizonaâs colorful lead molybdate crystal groups are familiar to every serious mineral collector...making amazing finds of topaz in the Pikes Peak area of Colorado and superb nodules of variscite near Fairfield |
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| ...........................................59 Colorado ...............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ......................................................................22 Arizona County Map ........................................................33 Arizona â Maricopa Co. Morristown area Site Map ...................................... |
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| indicate annotation of thesis title by addition of county. Capitalization of terms in revised abstracts was...particular to Mis s Edith Rich, and to the Natrona County Library, for procuring theses. Many university...WARD OWEN, 1951, Cambrian diabase flow in [Utah County], central Utah: Brigham Young Univ. M. S. thesis... 98 p. Upper Cretaceous rocks of the Coalville area are the Frontier (bottom), Wanship and Echo Canyon...Siltstone at the base of the Chinle Formation on the Colorado Plateau shows alteration features associated with |
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| on Amazonite 7.5 cm, from the Smoky Hawk claim, Colorado. Collected by the Dorris family; Tom Spann photo...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...June a heavy rain revealed that this mineralized area contained prehnite balls (exceeding 1 inch in diameter) |
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| ...........................................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 variegatedâŻocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.âŻgemmy |
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| ...........................................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 variegatedâŻocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.âŻgemmy |
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| development on poldered sediments in the Baie dâAuthie area (Somme, France). Cores 40 90 cm deep from recent...1158 indicate that the natural mineral suite of kaolinite, mica, illite, and two disordered mixed-layered...Clay Minerals Figure 1. Sketch map of the poldered area to the south of the Authie river bay. To the left...map). Somme River estuary. The Authie river marsh area has been poldered at different intervals since 1158...this peak as was the case for studies by Gharrabi and Velde (1995) and Lanson (1997) A second peak was |
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| 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 |
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| essentials of crystallography, chemistry, and crystal structure. These provide a firm basis for discussion...crystallography at the beginning of the text, crystal systems and associated conventions and terminology...minerals in order to avoid those lamentable errors in crystal forms and colors which are instantly apparent to...slightly reduced, and a few enlarged, as the diamond crystal of Plate 1, depicted in both natural and greatly...definition of the terms 'mineral', 'rock', and 'crystal' cannot be avoided at this stage. A rock is an |
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| well as 104 black-and-white photographs 45 new crystal drawings of rare species the most complete now...all entries include the mineralâs formula, its crystal system, locality, and physical property data, as...Encyclopedia of minerals Sagiiache County Pu blic Library Saguache , Colorado DEMCO For Reference Not to...Wendell E. Wilson Library Saguache County Public Saguache, Colorado VAN NOSTRAND REINHOLD New York ...sizes: ââxlââ refers to the size of the largest crystal, âââsphââ refers to the diameter of the largest |
 | Best, Myron G., Grant, S. Kerry, Mehnert, H.H., Keith, J.D., Naeser, C.W. (1987) Oligocene and Miocene volcanic rocks in the central Pioche-Marysvale igneous belt, western Utah and eastern Nevada. Professional Paper 1433ab. US Geological Survey doi:10.3133/pp1433ab | Report (issue) |
| ... Abandonment of Wallaces Peak Tuff Member General comment on crystal-rich dacite tuffs ... Escalante...Springs Formation ....................... Indian Peak caldera .............................. Utah sector...section of the northeastern segment of the Indian Peak caldera ... 5 6 10 A4-A10. Maps showing distribution...Wah Wah Springs Formation and location of Indian Peak caldera Greens Canyon Tuff Member of Ryan Spring...of at least 6,600 km3 and formed the large Indian Peak caldera complex. These units constitute two eruptive-compositional |
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| well as 104 black-and-white photographs ⢠45 new crystal drawings of rare species ⢠the most complete coverage...all entries include the mineral's formula, its crystal system, locality, and physical property data, as...Encyclopedia of minerals ~~cbe County Public Library Saguache, Colorado OEMCO For Refere nee Not to...Sagtiache Co1tntr Publlc I...ibran' Saguache, Colorado ~ VANNOSTRAND REINHOLD ~ - - - - N e w York...sizes: "xl" refers to the size of the largest crystal, "sph" refers to the diameter of the largest spherical |
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| at the outstanding shows of the annual San Diego County Fair at Del Mar, California. In addition, the collections...Los Angeles, California, E. M. Gunnell, Denver, Colorado, Specimen Minerals, Ltd., Woodville West, South...compound names ⢠Major mineral classes CHAPTER 4 CRYSTAL GROWTH 57 Crystals from melts, solutions and...crystals ⢠Internal imperfections of crystals ⢠Crystal and aggregate habits ⢠Twinning CHAPTER 5 GEOMETRY...of crystallography ⢠Cell shapes and systems ⢠Crystal axes ⢠How faces are related to axes ⢠Axial ratios |
