 | | Journal (article/letter/editorial) | | 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...perhaps be the Phillipine island arc, and Jack Colorado show two major rock groups with different ages |  | | Journal (article/letter/editorial) | | 20:04 16 May 2014 Stove Mountain Area Colorado Springs, Colorado All photos by Gary Zito unless otherwise...otherwise noted 224 ROCKS & MINERALS GARY ZITO Colorado School of Mines Metallurgical and Materials Engineering...Engineering Department 1500 Illinois Street Golden, Colorado 80401 gzito@mines.edu SARAH L. HANSON Adrian...20:04 16 May 2014 in the Stove Mountain area of Colorado have provided numerous attractive specimens of...crystals. Figure 1 (center spread). Stove Mountain, Colorado. Figure 2 (center spread, inset). An outcrop of |  | | 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 |  | | Report (issue) | | 21 2.78 100.41 (2) 2.74 100.04 (1) St. Peters Dome, Colorado, USA; average of two analyses, corresponds...willemite, gahnite, topaz, zircon, quartz, microcline, zeolites. Distribution: From West Cheyenne Ca~ non, near...near St. Peters Dome, El Paso Co., Colorado, and Cumberland, Providence Co., Rhode Island, USA. Large crystals...complex, Nigeria. From the El Criollo pegmatite, Cerro Blanco, Tanti district, 45 km west of C¶ordoba,...National Museum of Natural History, Washington, D.C., USA, 127180; The Natural History Museum, London, England |  | | 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) | | MINERALOGY OF THE MOUNT ROSA AREA, EL PASO AND TELLER COUNTIES, COLORADO. II. PEGMATITESI EuceNB B. Gnoss...alkalic granites in the Mount Rosa area, west of Colorado Springs. One is the older calc-alkalic Pikes Peak...crystals, zircon, biotite, siderite, and minor topaz, allanite, cassiterite and genthelvite. The Pikes...minerals in pegmatites of the St. Peters Dome district, Mount Rosa area,Colorado,attracted the attention of...and agesof pegmatites occur side-by-sidein the district has led us to a clarification of the paragenesis |  | | Journal (article/letter/editorial) | | 09:35 10 October 2014 Helen Hunt Falls, El Paso County, Colorado O wing to its diverse paragenesis and...localities is quite long. The Pikes Peak region of Colorado has been a historical source of exceptional zircon... occurring with many desirable species such as topaz, beryl, and tourmaline. It is common in calc-alkaline...zircon crystals from Helen Hunt Falls, El Paso County, Colorado. Dave Bunk specimen, Jeff Scovil photo...quartz specimen from Helen Hunt Falls, El Paso County, Colorado. Dave Bunk specimen, John Smolski photo |  | | 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...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 (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."...Park area. The largest fine-quality topaz specimens in Colorado occur in several separate and distinct |  | | Journal (issue) | | Julius Weber Mamaroneck, New York COLORADO ISSUE #2 Articles Colorado locality index.............................. 323 by B. L. Muntyan What’s new in Colorado minerals? ......................................339 by M. I. Jacobson The San Juan Mountains of Colorado ..................................349 by J. A...10 cm tall, from the Yucca Hill claim, Park County, Colorado. Richard A. Kosnar specimen; photo by John...should be mailed to Dr. Arthur Roe, 3024 E. Sixth St., Tucson, Arizona 85716, so as to be received before |  | | Report (volume) | | ------------------------------------------------------- 51 Topaz --.----_..----.--...---.--...-._.---.......-_.....ARSENIDES. BISMUTHINITB. From the Rosario Mining District, Sinaloa, Mexico. W. I-I. Melville. Described...mine of the Canadian Copper Company, Sudbury, district of Algoma, Ontario. Specific gravity, 4.541 ~...From the Silver King mine, Calico, San Bernardino County, Cal. Specific gravity, 6:28. Analysis by W. H...From .Teocalli Mountain, Brush Creek, Gunnison County, Colo. Specific gravity, 7.400 at 14.5°, corrected |  | | Report (issue) | | fractures and in the groundmass of some fluorine-rich, topaz-bearing rhyolites; in pods in a carbonatite vein...chiolite, microcline, quartz, fluorite, siderite, topaz (Ivigtut, Greenland); sodalite, villiaumite, eudialyte...lovozerite, natrolite, chabazite, aegirine (Mont St. Hilaire, Canada). Distribution: Formerly in a large...southwestern Greenland. In the USA, from St. Peters Dome, near Pikes Peak, El Paso Co., in the Goldie carbonatite...carbonatite, Fremont Co., and the Green River Formation, Colorado; in the Round Top intrusion, Sierra Blanca Peaks |  | | Journal (issue) | | Colorado Springs Mineralogical Society Founded in 1936 July 2015 PICK&PACK Vol 55 ...... Number 6 Inside...Jacobson Topic: Pegmatitic Rare-earth Minerals of Colorado: Species and Identification Refreshments provided...Friends of Mineralogy, Colorado Chapter. Mark has collected rare earth minerals in Colorado, Texas, Wyoming...Minerals of Colorado: Species and Identification Most of the pegmatitic rare-earth minerals in Colorado are found...the South Platte district, Jefferson County; St. Peters Dome district, El Paso County, Trout Creek Pass |  | 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) | | Pegmatites in the Pikes Peak Batholith, Central Colorado Daniel E. Kile Research Associate, Denver Museum...Nature & Science 5176 Black Bear Run - Littleton, Colorado 801215 Email: centennial87@comcast.net were sparse...throughout the Pikes Peak batholith in central Colorado, and many of them provide spectacular thumbnail-...pegmatites in the Pikes Peak batholith (PPB) in central Colorado. Although some minerals, such as fluorite, hematite...batholith, in an area north of Florissant in Teller County, taken prior to the arsoncaused 2002 Hayman fire |  | | Report (issue) | | GEOLOGICAL SURVEY Locatable Mineral Reports for Colorado, South Dakota, and Wyoming provided to the U.S.............................................. 1 COLORADO ................................................Complete citations are provided on the figures.] COLORADO Gunnison and White River National Forests Mountain...Coronado Groups (USGS, 1997a)......... 46-49 Part of Colorado Springs - Castle Rock area (Trimble and Machette...1979) ......... 50 Geologic map of the St. Peters Dome district (Steven, 1949) ..................... 51 |  | | Report (issue) | | thomsenolite, prosopite, pachnolite, ralstonite, fluorite, topaz, potassian mica, pyrite, galena (Ivigtut, Greenland)...deposit, southwestern Greenland. At St. Peters Dome, near Pikes Peak, El Paso Co., and in the Goldie carbonatite...Fremont Co., Colorado; from the Zapot pegmatite, 25 km northeast of Hawthorne, Fitting district, Mineral...Mineral Co., Nevada, USA. In the Mt. Cleveland tin mine, western Tasmania, Australia. At Perga, Volyn, Ukraine |  | | Journal (issue) | | Crystal Peak area north of the town of Florissant in Colorado. In addition to being a prospector, miner, and...including Jerry Hurianek, whose longtime activities in Colorado are documented in t\vo of his unpublished articles...(Continued on next page) Only $30 - postpaid in the USA Available exclusively from: Excalibur Mineral Corporation...left Florissant in his later years. he deeded his mining claims to several area rock clubs and private individuals...explore other areas in Crystal Peak and elsewhere in Colorado. His wideranging interests in exploring diverse |  | Van Alstine, R. E., Worl, R.G., Heyl, A.V., Trace, R.D., Parker, R.L., Griffitts, W.R., Sainsbury, C.L., Cathcart, J.B. (1976) Geology and resources of fluorine in the United States. Professional Paper 933. US Geological Survey doi:10.3133/pp933 | Report (issue) | | Peninsula, Mich. 10. Porphyry molybdenum ore, Colorado 11 . Zinc ore, Edwards , N . Y. 12. Manganese...Survey in accordance with the provisions of the Mining and Minerals Policy Act of 1970 (Public Law 91-631...discovered or not currently profitable to mine. The mining of mineral deposits, once they are discovered,...occurrences.......................... Fluorine in topaz deposits and occurrences.................................................................. Castle Dome . .... .. .. ....... .. .......... . ........ . |  | | Journal (article/letter/editorial) | | Drift stope level, Climax, Colorado 2Ht In the ore zone, which forms a dome-shaped cap of intensely silicified...there are three difierent kinds of veins; sericite-topaz veins, p1'riteIopaz-qnartz veins, and molybdenite-quartz...mostly in fine veinlets with molybdite, wolframite, topaz, cassiterite, monazite, pyrite and chalcopyrite... OCCURRLNCD OF POLYTYPES 2Hr Fairplay, Park Co., Colorado Harvard 81614 This locality simply has been mentioned...Harvard unnumbered Mountain Lion Mine, Boulder Co., Colorado. 1859 OF MOLYBDENITE Magnolia Dist', ZHt |  | | Journal (article/letter/editorial) | | mineralogy and paragenesis of pegmatites from San Diego County, California. He will also be remembered for his...a gem-quality rubellite specimen from the Pala district, spring 1991. 2. Gene Foord with his friend George...George Ashley at Hiriart Mountain, San Diego County, California, 1986. 3. Gene in Jackson, Wyoming, August...bucket at the San Diego Tourmaline Mine, San Diego County, California in 1974. 5. Boris Schmakin, Skip Simmons... Gene’s grandfather used his earnings from the mining ventures to purchase a smelter in Utah where he |  | | Report (issue) | | https://archive.org/details/fluorspardeposito00Oharr COLORADO GEOLOGICAL SURVEY BOULDER R. D. GEORGE, State...State Geologist BULLETIN 18 FLUORSPAR DEPOSITS COLORADO By HARRY KAMES A. AURAND BROTHERS, STATE...-...- Governor of Colorado GEORGE UNORLING nee ee President University of Colorado VicCTOR Ct A LDERGONG...TRANSMITTAL. State Geological Survey, University of Colorado, April 29, 1920. Governor Oliver H. Shoup, Chairman...honor to transmit herewith Bulletin 18 of the Colorado Geological Survey. Very respectfully, R. D. GEORGE |  | Foord, Eugene E., O'Connor, Joseph T., Hughes, John M., Sutley, Stephen J., Falster, Alexander U., Soregaroli, Arthur E., Lichte, Frederick E., Kile, Daniel E. (1999) Simmonsite, Na2LiAlF6, a new mineral from the Zapot amazonite-topaz-zinnwaldite pegmatite, Hawthorne, Nevada, U.S.A. American Mineralogist, 84 (5) 769-772 doi:10.2138/am-1999-5-609 | Journal (article/letter/editorial) | | Geological Survey, Denver Federal Center, Denver, Colorado 80225, U.S.A. M.S. 939, U.S. Geological Survey...Survey, Denver Federal Center, Denver, Colorado 80225, U.S.A. 3 Department of Geology, Miami University, Oxford...Geological Survey, Denver Federal Center, Denver, Colorado 80225, U.S.A. 5 Department of Geology and Geophysics...Geological Survey, Denver Federal Center, Denver, Colorado, 80225, U.S.A. 2 ABSTRACT Simmonsite, Na2LiA1F6...breccia pipe structure that cuts the Zapot amazonite-topaz-zinnwaldite pegmatite located in the Gillis Range |  | Galliski, Miguel Angel, Černý, Petr, Márquez-Zavalía, María Florencia, Chapman, Ron (1999) Ferrotitanowodginite, Fe2+TiTa2O8, a new mineral of the wodginite group from the San Elias pegmatite, San Luis, Argentina. American Mineralogist, 84 (5) 773-777 doi:10.2138/am-1999-5-610 | Journal (article/letter/editorial) | | Geological Survey, Denver Federal Center, Denver, Colorado 80225, U.S.A. M.S. 939, U.S. Geological Survey...Survey, Denver Federal Center, Denver, Colorado 80225, U.S.A. 3 Department of Geology, Miami University, Oxford...Geological Survey, Denver Federal Center, Denver, Colorado 80225, U.S.A. 5 Department of Geology and Geophysics...Geological Survey, Denver Federal Center, Denver, Colorado, 80225, U.S.A. 2 ABSTRACT Simmonsite, Na2LiA1F6...breccia pipe structure that cuts the Zapot amazonite-topaz-zinnwaldite pegmatite located in the Gillis Range |
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