 | | Journal (article/letter/editorial) | | 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 |  | | Journal (article/letter/editorial) | | PEGMATITES OF EIGHT MILE PARK, FREMONT couNTY, coLoRADO E. Wm. Heinrich, Deparlment of Mineralogy, Uniaersi...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...sericite crystals were obseryed. Vugs with very small quartz crystals were found on the Mica Lode dumps. A few |  | | Report (issue) | | 2.90 2.58 Total 100.56 100.00 (1) Eight Mile Park, Colorado, USA. (2) (Na, Li)Al(PO4 )(OH, F) with Na:Li...Lepidolite, quartz, elbaite, mica (Eight Mile Park, Colorado, USA). Distribution: In the USA, from Eight...about six km northwest of Cañon City, Fremont Co., Colorado; in the Strickland quarry, Portland, Middlesex...near Jihlava, Czech Republic. From the Tremearne pegmatite, Breage, Cornwall. In Brazil, large crystals from...Valley, Minas Gerais. At the Rusororo pegmatite, Gatumba district, Rwanda. Name: For its content of sodium |  | | Journal (article/letter/editorial) | | 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 |  | | Journal (article/letter/editorial) | | in quartz. A Lithium-Bearing Pegmatite in the Clear Creek District, CLEAR CREEK COUNTY, COLORADO In...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...and blue tourmaline in quartz, as well as fine-grained lepidolite. History Boos (1954) first noted the...of the pegmatite occur at the road cut. Mineral enthusiasts should be aware that the pegmatite is located |  | | 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 (article/letter/editorial) | | were found in the Mica Lode pegmatite, Eight Mile Park, Fremont county, colorado. Two other new triplite...school Section pegmatite in the same district and another pegmatite in El Paso county, colorado. The triplite...in a study of the pegmatite deposits of Eight MiIe Park, Fremont County, Colorado, the junior author...GnNnner, Gror,ocv The geology of the Eight Mile Park pegmatite area has been studied by the junior author...author (Heinrich, 1947). The area is a 25-square mile plateau roughly bisected by the Royal Gorge of the |  | | 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...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 |  | | Journal (article/letter/editorial) | | NOTESAND NEWS MONTEBRASITEFROM EIGHT MILE PARK, FREMONT COUNTY, COLORADO* E. Wu. Hnrunrcrr ano ArrcB S...group from a pegmatite on Eight Mile Park, west of Canon City, Fremont County, Colorado (Schaller, l9Il...Natromontebrasite, Meyers Quarry pegmatite, Eight Mile Park, Fremont Co., CoIo. Analyst-W. T. Schaller... B. Montebrasite, Meyers Quarry pegmatite, Eight Mile Park, Fremont Co., Colo. Analyst-Alice S. Corey...difierent names within 40 years. The occurrence on Eight Mile Park is the only one known, and it was found there |  | | 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...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...1951 version with a slightly different title), is Colorado Gem Trails and Mineral Guide, by Pearl (1951, |  | | Journal (issue) | | MINERALOGICAL SOCIETY BULLETIN What the Heck is Pegmatite? (The Basics) by Bob Carnein Lake George Gem &...& Mineral Club News June 2019 Now retired to Colorado, Dr. Carnein was an active member of NMS when he...that are 2 cm across surrounded by finer grained quartz and potassium feldspar grains that are 5 mm across...the first problem when defining what a pegmatite is. Pegmatite is the name of an igneous-rock texture...rock type. On the average, mineral grains in a pegmatite are more than 1 cm (about ½ inch) across (Bates |  | | Journal (article/letter/editorial) | | PEGMATITE MINERALS OF THE UNITED STATES DAVID M. SEAMAN American Museum of Natural History, New York...to twenty or more feet in length and to six or eight feet in height and width. Black tourmaline is the...found in all types of pegmatite from the common granite type to the lithium pegmatite. Many localities have...near Bedford and Overlook, New York; near Golden, Colorado and elsewhere. A fine crystal measuring 4x4x10...crystal was noted in the Luella mine near Avon, Latah county, Idaho, which measured 3x3x8 feet. Other large |  | | Journal (article/letter/editorial) | | Radioactive columbite is related to a particular pegmatite district, its paragenetic position, and the presence...of the properties and textures of the opaque pegmatite minerals in polished section. Species studied...the discovery, at the Mica Lode pegmatite in Fremont County, Colorado (Heinrich, 1948), of a relatively...specimenswere collectedby the writer. Eight-Mile Porh, Fremont Co., Colorad.o Ref.: Heinrich, 1958 Deposits...spessaritite) rock that replaces footwall parts of quartz-microcline cores. G (Mica Lode) 5.58, 5.66, and |  | | Journal (article/letter/editorial) | | 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 |  | | Journal (issue) | | The Mineral Collector's Newsletter Rodsrox Smoky Quartz Claims Lane A. Griffin 590 Hammill Lane Reno, Nevada...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...Mine workings at Eagleville with high gra de gold/ quartz veins. Over two miles of workings are represented...Rediscovered: The Royal Gorge No. 1 Mine, Eight Mile Park, Fremont County, Colorado Mark Ivan Jacobson Perth Pouch |  | | Journal (issue) | | collection of & FOSSIL SHOW • 1305 Memorial Ave. (1 mile west of 1-91) • W". SPRINGFIELD, ~ Herb & Monika...well-known Ukrainian heliodor occurrence and its many pegmatite minerals. Like its predecessor locality issues...history, geology, mineralogy and a discussion of pegmatite origins, all with exceptional photography of many...is interesting and well diagramed. Chapter 4, Pegmatite Minerals, extends 72 pages and is further divided...informative mineral features". The authors describe quartz, feldspar, mica and others in terms of what the |  | | Journal (article/letter/editorial) | | ELEMENTS IN GRANITE PEGMATITE By DAVID M. SEAMAN 36 Winter St., Norway, Maine 04268 The native elements...minerals in granite pegmatite and where found, they occur chiefly in or neir the quartz cores as very late...late minerals in the pegmatite. Bismuth and graphite are the most common elements noted in pegma tite;...but throughout the world such occurrences in pegmatite are quite rare and of no, or very little economic...found in a pegmatite along Coosa Creek four or five miles south of Blairsville in Union County, Georgia |  | | Journal (article/letter/editorial) | | ZONING IN PEGMATITE DISTRICTS* E. Wu. HurNnrcrr, University of Michigan, Ann Arbor, Michigon ABSTRACT...ABSTRACT fn numerous pegmatite districts the size, shape, external and internal structure, texture and mineral...mineral content of an individual pegmatite can be shown to be functions of the distance of the body from...Widespread and intensive field investigations of pegmatite mineral deposits during the last 15 years have...attention has been directed toward the study of pegmatite districts or provinces and toward relating the |  | | Journal (article/letter/editorial) | | Pegmatite Minerals of the United States David M . Seaman American Museum of Natural History, N e w Y...Silica and Silicates ( 107 ) from the pegmatites at QUARTZ, silica, Si02, is an essential mineral in the granite...colored crystalline quartz often makes up the greater bulk of the mass of pegmatite material. Many masses...are of pink or the rose quartz variety. Rock crystals, or the colorless quartz crystals, are often found...found as well as are smoky quartz crystals in the cavities of druses which occur in many pegmatites. Amethyst |  | | Journal (article/letter/editorial) | | FEBRUARY, 1965 THE CHIEF LITHIUM PEGMATITE, DEVILS HOLE, FREMONT COUNTY, COLORADO1 E. Wu. HnrNnrcu eNo...mately one airline mile north of the well-known Devils Hote (lingneim) pegmatite (Hanley et aI.,1950)...on the south side of the Antelope Gulch, about I mile west of the junction betweenAnterope and E a s t...) . and chemicals corporation in canon city, colorado. However, Iithium minerals were rumored to have...found in this area as early as 1956. The Chief pegmatite was exploredfor lithium and berl,llium in the |  | | Journal (article/letter/editorial) | | 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 |  | | Journal (issue) | | 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). |  | | Journal (issue) | | 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 |  | | Journal (article/letter/editorial) | | MOUNT ROSA AREA, EL PASO AND TELLER COUNTIES, COLORADO. II. PEGMATITESI EuceNB B. Gnoss, CaliJornia Diris...Michigan. Aesrnlcr Two contrasting swarms of pegmatite dikes occur intermingled in the Pikes Peak granite...alkalic granites in the Mount Rosa area, west of Colorado Springs. One is the older calc-alkalic Pikes Peak...type. The accessory assemblage of the Mount Rosa quartz-microcline-riebeckite pegmatites consists chiefly...Pikes Peak pegmatites, which are characterized by quartz and amazonite crystals, zircon, biotite, siderite |
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