 | | Journal (article/letter/editorial) | | Denver, Colorado MARK I. JACOBSON Chevron U.S.A., Inc. 700 S. Colorado Boulevard Denver, Colorado 80222...sponĀ sored by the Coors Foundation of Golden, Colorado, and repreĀ sents a significant improvement over...of amazoniteāsmoky quartz and selenite-calcite-aragonite as they are found in nature are special features...as are expanded exhibits of minerals for which Colorado is famousāamazonite, aquamarine, rhodochrosite...its role in providing educaĀ tional tours for Colorado school children. Plans are also proĀ gressing |  | | Book | | Gkologim-in-charge. CATALOGUE OF MINERALS FOUND IN COLORADO. BY ā¢ F. M. ENDLICH. [EXTRACTED FROM THE TENTH...been adopted. tar as practicable, analyses of Colorado minerals have been given. They will aid examination...of the catalogue. systematic enumeration of the Colorado mineral species and references to the publications...Endlich, S. IN COLORADO. X. D. The continuous development of mineral resources of Colorado is productive...Geological .Report for PS75. Now, the survey of Colorado is completed, many additions of species new to |  | | Report (issue) | | Mines La Argentina Maria Teresa Oire Ojo de Agua Rio Alumbrlo Spring Area Lagunita Libertad Loma Blanca...3 S S Rio Alumbrio Spring Rio Alumbrio Spring Rio Alumbrio Spring Rio Alumbrio Spring Rio Alumbrio...Alumbrio Spring Rio Alumbrio Spring Rio Alumbrio Spring Salar Centenario Salar Centenario Salar Centenario Salar...Margarita San Mateo Mine Salar de Pucar Salar de Rio Grande Betina Mine Boratera Blanca Lila Coronel Gorrotti...Diablillos Salar del Rincon 20 de Febrero Calchaquina Centenario Delia Tincalayu Salar del Hombre Muerto |  | | Report (volume) | | GEOLOGY OF THE SAN JUAN REGION OF SOUTHWESTERN COLORADO BY WHITMAN CROSS AND ESPER S. LARSEN UNITED...of the San Juan region, Colorado _________ In pocket 2. Relief map of Colorado showing the relation of...San Juan region to the other mountain masses of Colorado.__________ 10 3. Drainage map of the San Juan...View looking southward up the South Fork of the Rio Grande. 90 12. At Weathering of Alboroto latite tuff;..._ 90 13. A, View looking eastward down the Rio Grande Valley from the head of Weminuche Meadows; B |  | | Book (edition) | | MILEAGE L OGS. REVISED EDITION Revised Edition, COLORADO GEM TRAILS AND MINERAL GUIDE HICllAHD :--1. PEARL...an extensive Ā„em and mineral collecting tour 01 Colorado, revealing the interesting places where Nature...Swallow, Publisher) 2679 South York Street Denver, Colorado 80210 - , =Ā· - Ā·, 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 |  | | Catalog/List | | Laranjeiras Mine, Minas Gerias,Brazil Magnet Cove,Arkansas,USA Ā½ xĀ½ Ā£1.50 5mmĀ£3 Hannover Cove.St Agncs, Comwall...Mongolia. P.D.WellNo I , near Ajo, Pima lxl Ā£4 County, Arizona , U.S.A Ribane Mine, Mozambique Ā£8 Mt...Close, Cobham.Surrey England KT! I 2NL Boron, Kem County,Califomia U.S.A Madagascar Ix! Ā£2 lxl Ā£7. S0...ltaly lxl Ā£5 Boghill Road Quarry, Glengonnley, County Antrim, Yaknl Mine,Bigndic, Turkey 1/,xĀ½ Ā£S Ā½...2x2 Ā£6 Davis Mountains,Maricopa 5mm Ā£3 County,Arizona, USA Hilarion Mine , Lnurium,Greecc Ā½ ā¢ Ā£3 lxl |  | | Book (edition) | | ā _ ; COLORADO GEM TRAILS AND MINERAL GUIDE ! ā : ' BOOKS BY RICHARD M. PEARL Colorado Gem Trails...Trails and Mineral Guide Colorado Rocks, Minerals, Fossils Americaās 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 ā
COLORADO GEM TRAILS AND MINERAL GUIDE ā
SKETCH MAPS BY MIGNON WARDELL PEARL |  | | Report (issue) | | a short article on California diamonds. Amador County: A few small stones have been picked up near the...the towns of Volcano, Oleta and Fiddletown. Butte County: In 1853 it was observed that diamonds occurred..."Wliite Rock canyon and at Smith's Flat. Fresno County Small diamonds are reported to have been found...found a few miles north of Coalinga. Nevada County A 1-^ carat stone was found at French Corral. Siskiyou...El Dorado County Forest Hill. About : sixty have been : : : Bar. Trinit}^ County : INIicroscopic |  | | Journal (article/letter/editorial) | | stones) with smoky quartz on matrix, Mount Antero, Colorado. Denver Museum of Nature and Science specimen...Rhodochrosite on sulfides, Sweet Home mine, Alma, Park County, Colorado, Martin Zinn specimen, Jeff Scovil photo....November/December: Copper, Cliff mine, Keweenaw County, Michigan. A. E. Seaman Mineral Museum specimen...New Mexico, 301 Agate, Colorado, 233, 252-68; Michigan, 387 Aikinite, Colorado, 165 Alabandite, Virginia...Virginia, 324 Altaite, Colorado, 165 Ammonite, Colorado, 225-26 Amethyst, Colorado, 223,233-35 Amphiboles |  | | Book | | MINES AND MINERALS OF THE GREAT AMERICAN RIFT (COLORADO-NEW MEXICO) Sine ā_ā< Ā¢ te om At _SHT 40...MINES AND MINERALS OF THE GREAT AMERICAN RIFT (COLORADO-NEW MEXICO) Richard Walker Holmes and Marrianna...Mines and minerals of the Great American Rift (Colorado-New Mexico). Bibliography: p. Includes index...index. 1. Mines and mineral resourcesāColorado. 2. Mines and mineral resourcesāNew Mexico. I. Kennedy, Marrianna...minerals of the Great American Rift in New Mexico and Colorado. Great American Rift is the name we use for a |  | | Report (issue) | | volcanic series as seen down the valley of the Rio Grande from north of Weminuche meadows, San Cristobal...Petrology of the San Juan Region Southwestern Colorado By ESPER S. LARSEN, JR., and WHITMAN CROSS GEOLOGICAL...an area of I2fiOO square miles in southwestern Colorado UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...expedite the work, the Creecle, Summitville, Del Norte, and Conejos quadrangles were mapped only in detailed...the Uncompahgre, Cochetopa, Saguache, Creecle, Del Norte, and Summitville quadrangles, and Cross was with |  | McANULTY, W. N., SEWELL, C. R., ATKINSON, D. R., RASBERRY, J. M. (1963) Aguachile Beryllium-Bearing Fluorspar District, Coahuila, Mexico. Geological Society of America Bulletin, 74 (6) 735 doi:10.1130/0016-7606(1963)74[735:abfdcm]2.0.co;2 | Journal (article/letter/editorial) | | Etereo and between the Sierra del Carmen on the west and the Serranias del Burro on the east. The ap- ...nearest point on the Rio Grande and 80 air miles southeast of Marathon, Brewster County, Texas (Fig. 1)....OTHERS-BERYLLIUM-BEARING FLUORSPAR, MEXICO the Rio Grande at either StillweU or Heath crossings, preferably...prospecting, exploration, and development district called Del Carmen-Pico Etereo (McAnulty, 1956). Only fluorspar...flank of Sierra del Carmen in a synclinorium between the Carmen range and the Serranias del Burro (Burro |  | | Catalog/List | | 010 ALUMINOCOPIAPITE - Champion Mine, California, USA. A pure yellow botryodal mass. 28x28xl8 011 AMARANTITE... Gila Co., USA. Pale blue patches in matrix. Moderately rich. 22xl7xl0 3,00 018 ARAGONITE xx - Near Epen...locality (Wingberg quarry). The lot for 9,00 019 ARAGONITE variety TARNOWITZITE xx - Tsumeb, Namibia. White...dolomite xls. Nice and cheap. 47x43x32 15,00 020 ARAGONITE xx - Pribram, Czechoslovakia. Pale yellow elongated...variety GOLDEN11 X - Slocum's Quarry, Haddam, CT, USA. A terminated 39x9x7 single xl embedded on a large |  | | Report (issue) | | been found in the mining the nugget Jim, Placer County, California, in 1871 by a small girl in who town...The bibliography has been updated and expanded. County lists published by Collins (1) pp. 40-64, in Murdoch...rhyolite locality in Alameda County and the lawsonite type locality Marin County, which have been completely...Mother Lode, Crestmore, Searles Lake, Pala, Mesa Grande, and others which contributed many minerals found...color" from Cherokee Flat, Butte County); and to borax ("Lake County, in large crystals in the clay of |  | | Report (issue) | | commercial borates. Lawsonite, first found in Marin county in 1895, has proved to be of great petrographic...nickel telluride, melonite, found in Calaveras County in 1867. New minerals and new mineral this is ...products. The gem-bearing pegmatites of San Diego County have aroused special masses, interest. Many ...short articles on California diamonds. A Amador County: few small stones have been picked up near the...recently, one of 21 carats near Plymouth. ; Butte County: In 1853 it was observed that diamonds occurred |  | | Report (issue) | | OF MINERALS AND MINERAL LOCALITIES ALLANITE Inyo County: 1, Coarse grained allanite occurs in a pegmatite...quadrangle, McAllister (4) p. 52. Los Angeles County: Additional reference, Patchick (2) p. 237. This...diagrams. 1, AMPHIBOLES ACTINOLITE San Bernardino County: 3, Additional Wrightwood, reported by Berkholz...locality in alluvium, near 21. HORNBLENDE Inyo County: 1, In large prismatic crystals up to 2.5 inches...Panamint Range, McAllister (4) p. 52. San Bernardino County: 2, Pargasite variety of hornblende occurs in coarsely |  | | Journal (issue) | | Julius Weber Mamaroneck, New York COLORADO ISSUE #2 Articles Colorado locality index.............................. 323 by B. L. Muntyan Whatās 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...Natural History for conceiving the idea of a second Colorado issue and for helping a great deal in bringing |  | | Book | | Mexico, Arizona, southern Cicam part of southern Colorado, and southern Utah, has given rise to some...South America, oe continents from Alaska to Tierra del the northern forests, the jungles of the arid...several groups could be distinguished: In the Colorado River drainage, south of the Grand Canyon, were...the states of Utah, Colorado, Arizona, and New Mexico meet) and in the Rio Grande Valley of New 3 Mexico...in the upper Rio Grande Valley, the Mesa Verde, the Gran Chaco, and later the Rio Grande branches developed |  | | Report (issue) | | observed in the gold gravels at Cherokee, Butte County, and this locality, became the most noted one in...short articles on California diamonds. A Amador County: few small stones have been picked up near the...towns of Volcano, Oleta and Fiddleto^vn. Butte County: In 1853 it was observed that diamonds occurred...Thompson Flat, two miles north of Oroville. El Dorado County: A diamond weighing 1| carats was found at Forest...in White Rock canyon and at Smith's Flat. Fresno County: Small diamonds are reported to have been found |  | | Report (issue) | | University of Texas at El Paso, El Paso, Texas 79968, USA AbstractāIndustrial minerals and rocks in the tri-state...Rey laccolithic intrusion located in the Paso del Norte. High-quality tile is produced in Chihuahua City...aggregate derived from valley-fill deposits of the Rio Grande and adjacent basins, used in concrete and block...Frasch sulfur production in adjacent Culberson County, west Texas. Halite, gypsum, and barite have also...region fronteriza triestatal del oeste de Texas, sur de Nuevo Mexico y norte de Chihuahua ResumenāLos minerales |  | | Book (volume) | | SOUTHWESTERN QUADRANT Arizona, Arkansas, California, Colorado, Louisiana, Nevada, New Mexico, Oklahoma, Texas...Southwestern Quadrant Arizoni, Arkansas, California, Colorado, Louisicna, Nevada, New Mexico, Oklahoma, Texas...Location Numbers Arizona Arkansas California Colorado 258 Louis B30 ana HOW TO USE THIS BOOK...volumes, through very precise directions and accurate county maps, to get you to the best and most accessible...for the county in which it is located. This site number also appears under the given county in the text |  | | Journal (article/letter/editorial) | | Neutral-pH chloride water Opal/chalcedony Calcite, aragonite Opal/chalcedony Opal/chalcedony Taken from references...alteration exposed in a road cut above the Coipa Norte HS gold-silver orebody at La Coipa, northern Chile...also include sinter, as exemplified by Fruta del Norte, Ecuador (Leary et al. 2007). In contrast, there...facies and mineralogic composition (calcite and/or aragonite) are controlled by water composition and temperature...moat sediments of the Creede ash-flow caldera, Colorado, which may mark the distal outflow of the Creede |  | | Journal (article/letter/editorial) | | Minerals Figure 1. Location map for Golden, Colorado, prepared by William Besse. All photos by the...Gem and Mineral Show, are well represented in Colorado. In particular, the Table Mountains near Golden...geochemist with the US.Geological Survey in Boulder, Colorado. His most recentfeature articlefor Rocks & Minerals...Plume and Moss Agatefiom the Del Norte Area, Saguache County, Coloradoā and appeared in the July/August...Mountain having been recently acquired by Jefferson County Open Space, a governmental agency that emphasizes |  | | Journal (article/letter/editorial) | | Geology, Humboldt State University, Arcata, CA, USA Published online: 31 Jan 2014. To cite this article:...Geology, Humboldt State University, Arcata, CA, USA Downloaded by [UOV University of Oviedo] at 02:48...Franciscan Complex in the northern Humboldt and Del Norte County Coast Ranges (Figure 1). I focus on a description...Aalto (1982) subdivided Franciscan rocks of Del Norte County, California, into a western belt of intercalated...Dumitru et al. 2010). In northern Humboldt and Del Norte Counties there is a gradual northward decline |  | | Report (issue) | | Hydraulic Mine,ā in 41 County Amador at Volcano, Flat, Cherokee County 41 Butte 9. showing ...Mountain. Pala surface, showing Weathered Diego County. San Diorite, Dehesa, Orbicular (natural size)...Ramona, Albite, crystallized on 46 County Diego County ---- 47 11. 12. 13. Town of Belfry ...Beach, from exposed Quartz crystals, end Mesa Grande of Entrance to 25. Orbicular Diorite Beach...Gem dump line, San Diego County ---- 73 - --- - 78 Angeles County 85 to the X ray for ten |
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