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| PEGMATITES OF EIGHT MILE PARK, FREMONT COUNTY, COLORADOXT E. Wrrr. HerNnrcu, Department of Mineralogy...The Eight Mile Park pegmatite district, three to twelve miles west of Canon City, Fremont County, Colorado...separate paper. 420 PEGMATITES OF EIGHT MILE PARK, COLORADO 42r area are flanked on the east by...Springs biotite schists by granite, aplite, and pegmatite. The pre-Cambrian structural elements trend uniformly...aplite sills in granite, (5) the attitudes of pegmatite sills in schist, and (6) the trend of the axis |
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| PEGMATITES OF EIGHT MILE PARK, FREMONT couNTY, coLoRADO E. Wm. Heinrich, Deparlment of Mineralogy, Uniaersi...Torbernite(?)..... Magnetite Hematite. Chalcocite. Native silver. Malachite, azurite, and chrysocolla Bismutite...J/J 5t I 579 583 5d5 PEGMATITES OF EIGHT MILE PARK, COLORADO .).) I MINERALOGY GeNBnar, FnarunBs...FnarunBs On the basis of occurrence the pegmatite minerals may be divided into three groups: o 1. The common...present at all, are small. fn the School Section pegmatite 1- to 6-inch vugs containing minute cleavelandrte |
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| Lithium-Bearing Pegmatite in the Clear Creek District, CLEAR CREEK COUNTY, COLORADO In all of Colorado's...Recently a lithiumbearing pegmatite has been rediscovered in the Clear Creek district on the east flank of...of Mt. Evans. This pegmatite, the Bald Mountain tourmaline prospect, contains specimens of dark green and...of the pegmatite occur at the road cut. Mineral enthusiasts should be aware that the pegmatite is located...and unauthorized collecting is not allowed. The pegmatite was studied by the authors from July to September |
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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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| BEYERITE FROM COLORADO* E. Wru. IferNnrcrr, Unioersity of Michigan, Ann Arbor, Michigan. Ansrnacr Bismutite...pegmatites in colorado and northern New Mexico. rn three pegmatites in south-central colorado (Mica Lode...school section deposits, Fremont county, and Meyers Ranch body, park county) beyerite is intergrown with...spring of 1943the writer examined pegmatite deposits in south-central colorado for the Geological Survey, united...been recorded (Heinrich, 1946). Field work on Colorado pegmatites was resumed in the summer of 1946 under |
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| PEGMATITE MINERALS OF THE UNITED STATES DAVID M. SEAMAN American Museum of Natural History, New York...article are for the most part uncommon or rare in pegmatite. Only fluorite, calcite and siderite are at all...Bernardino County, California and also in pegmatites north of the Reagan mining district, Nevada. FLUORIDES...the most common fluoride mineral occurring in pegmatite. It is often associated with cassiterite, tourmaline...amount in the rare earth type of pegmatite as at Barringer Hill, Llano County, Texas where large masses weighing |
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| 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...schists and granites of Larimer County are cut by numerous pegmatite dikesl which have been exploited...exhibiting an ore mineral phaseoccur in Boulder County.3JeffersonCounty contains both tourmaline and muscovite |
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| 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...and mineral deposits, ranging from the gold and silver that first brought prospectors and other adventurous...prohibitions on collecting or to private land or mining claims for which permission has been obtained....been written as guides to mineral collecting in Colorado. A classic, which went through three major editions |
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| ELEMENTS IN GRANITE PEGMATITE By DAVID M. SEAMAN 36 Winter St., Norway, Maine 04268 The native elements...elements are very rare minerals in granite pegmatite and where found, they occur chiefly in or neir the quartz...quartz cores as very late minerals in the pegmatite. Bismuth and graphite are the most common elements...elements noted in pegma tite; with gold, silver, copper, arsenic, an timony, allemontite, iron, and sulfur...but throughout the world such occurrences in pegmatite are quite rare and of no, or very little economic |
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| friends. W evada was experiencing a boom in gold mining and exploration was as at a high point. We agreed...love fo r the remote Nevada deserts and the old mining districts. We also served in the military during...Rediscovered: The Royal Gorge No. 1 Mine, Eight Mile Park, Fremont County, Colorado Mark Ivan Jacobson Perth Pouch...tourmaline pegmatite near Royal Gorge (Jacobson 1997), Eight Mile Park, Fremont County, Colorado. This photograph...colored tourmalines Ben Roesch 6 14 Southern Cross Colorado Springs, CO 80906 (Sterrett 1909). The purpose |
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| PEGMATITE MINERALS OF THE UNITED STATES Downloaded by [University of Florida] at 10:46 04 August 2017...and Rincón, California; in the Petaca district of Rio Arriba County, New Mexico; from the Harney Peak region...of South Dakota; the Reagan mining district, Kern range, White Pine County, Nevada. SULFUR, S, occurs...decomposition of metallic sulfides. It has been found in Colorado as tiny yellow grains as a very rare mineral in...New York. GRAPHITE. C, is rather uncommon in pegmatite. In the eastern and southeastern Adirondack region |
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| Mammoth-St. Anthony Mine (Tiger, Pinal Co., Arizona, USA). Ex coll. Rock Currier. Part of the American Mineral...the state is home to the New Mexico Institute of Mining & Technology (NMIMT), formerly the New Mexico School...admitted to NMIMT to begin studies in geology and mining engineering. I can still remember the first time...about 26 miles west of Socorro in the Magdalena District. The smithsonitc specimen was approximately 12...but virtually every student majoring in geology, mining or metallurgical engineering had paid a visit to |
 | 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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| Pegmatite Minerals of the United States David M . Seaman American Museum of Natural History, N e w Y...often makes up the greater bulk of the mass of pegmatite material. Many masses are found in the cores in...from the Devil's Head area southwest of Denver, Colorado, a few years ago. A large milky quartz crystal...Connecticut, and from the Mt. Antero region of Colorado. A very large smoky quartz crystal was recovered...Custer, South Dakota; near the Royal Gorge in Colorado, and elsewhere. Small crystals of rose quartz |
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| by Vandall King. from Orchard Dome, Fort Bend County, Texas Art Smith 9118 Concho Houston, Texas 77036...77036 • In I 969 and 1970 Duval's Frasch sulfur mining operations at Orchard Dome were being geared down...1 White fluorite, 2 mm, Orchard Dome, Fort Bend County, Texas, photo by the author. ,/" 2 Minero!...Mine: the Royal Gorge No. 1 Mine, Eight Mile Park, Fremont Co., Colorado Mark Jacobson 112 N. Lemans St...tourmaline mine of the Colorado miner, C. A Beghtol. This long lost pegmatite was described by Douglas |
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| ...........................................59 Colorado ...............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ..................................Co. Mining Districts ............................................................22 Arizona County Map.........................23 Arizona – Cochise Co. Mining Districts .................................... |
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| Corporation of America Mine No. 4, St. Lawrence County, New York T he technological development of mankind...ornamentation and trade such as those of gold and silver. Iron, however, is another matter entirely. The...famous Tilly Foster iron mine near Brewster, Putnam County (see Cook 2008 and references therein) was the...Essex County; excellent sharp octahedra to 2 cm have been collected at Port Henry in the same county. The...of America’s No. 4 mine at Balmat, St. Lawrence County, is well known for lustrous magnetite crystals |
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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 variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |
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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 variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |
 | | 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...PEARL Exploring Rocks, Minerals, Fossils in Colorado America's Mountain: Pikes Peak and the Pikes Peak...Atlas of Colorado American Gem Trails Nature As Sculptor: A Geologic Interpretation of Colorado . Scenery |
 | | 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 |
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| experiencing remnants of winter while the rest of the county can feel spring in the air. This means it’s time...vanegas3@charter.net CHAPTER PRESIDENTS (ALSO BOARD MEMBERS) COLORADO CHAPTER: Mark Jacobson; markivanjacobson@gmail...MINERALOGY Vol.46, No.2 Page 5 Compliments of the Colorado Chapter Newsletter: Get it While You Can: the...pay for all of the infrastructure required for a mining company to process the deeper, lower grade hypogene...copper minerals rarely occur as good specimens in Colorado. If you want to add a great specimen of azurite |
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| 1965 MINERALOGY AND PARAGENESIS OF THE COTOPAXI, COLORADO, Ct-Zn SKARN DEPOSIT Cuenr.BsA. Sar-orrr,Departmentof...base-metal deposits crops out in south-central Colorado. At Cotopaxi mineralization is confined to a small...INrnonucrroN Nearly all metallic mineralization in Colorado is associatedwith igneous rocks and structures...but little-studied ore deposits in south-central Colorado is Precambrian in age. These deposits (Fig. 1)... galena and pyrite; it contains only traces of silver and gold. The deposits are readily identified by |
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| Geology and Ore Deposits of the Front Range Colorado By T. S. LO\'ERING and E. N. GODDARD GEOLOGICAL...cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund ~ oopr is...__________________________________________ _ 1 Summary of mining districts---.---------------------Introduction..._________________ _ Pikes Peak granite _____________________ _ Silver Plume granite ___________________ _ Pegmatites..._________________ _ Harding sandstone _________________ _ Fremont limestone _________________ _ Devonian _______ |
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| is from Leiper’s quarry at Springfield, Delaware County, Pennsylvania (Peters 1984). When the spessartine...to 7 cm across occur near Middletown, Middlesex County, and massive spessartine and relatively small crystals...localities in Figure 2. A classic Avondale, Delaware County, Pennsylvania, spessartine specimen with a major...HUK [OL *PU JPUUH[P4PULYHS:VJPL[` Delaware County, Pennsylvania. Detailed work by Lindsley and Peters...States are from pegmatites of the Amelia district, Amelia County, Virginia (Sinkankas 1959, 1997). Here |
