 | | Journal (article/letter/editorial) | | cm long), Beebe Hall, McCain Valley, San Diego County, California. Cal and Kerith Graeber specimen; Jeffrey...is a beryllium aluminum silicate with hexagonal crystal symmetry. Its typical shape is an elongated six-sided...that contain iron-rich minerals, such as black tourmaline, biotite, pyrite, magnetite, triplite, and triphyllite...feature some of the finest aquamarinesfound in Colorado and other areas of the United States. Aquamarine...mineral at this year’s show, but it is also the Colorado state gemstone, having earned that distinction |  | | Report (volume) | | the Mount Zirkel Wilderness and Northern Park Range Vicinity, Jackson and Routt Counties, Colorado By...the Mount Zirkel Wilderness and northern Park Range vicinity, Jackson and Routt Counties, Colorado. (Studies...mineral resources-Colorado--Jackson County. 2. Mines and mineral resources-Colorado-Routt County. 3. Geology-Colorado--Jackson...Geology-Colorado--Jackson County. 4. GeologyColorado--Routt County. I. Patten, Lowell L. II. Daniels, Jeffrey...forest lands in the Mount Zirkel Wilderness and northern Park Range vicinity, Colorado, that are being considered |  | | Journal (article/letter/editorial) | | Identification of uraniferous granitoids in the USA using stream sediment geochemical data R. J. HOWARTH...Geology, University of Georgia, Athens, Georgia, USA J. A. PLANT Institute of Geological Sciences,...magmatic from an area of 76000 km 2 in central Colorado are used to identify uraniferous granitoids on...uranium source rock. Uraniferous granitoids in Colorado, which are associated with sedimentary basins...National Topographic Map Series (NTMS) quadrangles in Colorado (fig. 1). These data form the basis for this investigation |  | | Report (issue) | | Basement in Colorado GEOLOGIC A I, Rock Units of the Precambrian Basement in Colorado By OGDEN TWETO...TWETO GEOLOGY OF THE PRECAMBRIAN BASEMENT IN COLORADO U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1321-A...igneous rocks in outcrop and the buried basement in Colorado UNITED STATES GOVERNMENT PRINTING OFFICE...1912-1983 Rock units of the Precambrian basement in Colorado. (Geological Survey Professional Paper ; 1321-A)...Geology, Stratigraphic Pre-Cambrian. 2. Geology Colorado. QE653.T9 1986 551.7'1'09788 I. Title. For sale |  | | Report (issue) | | Precambrian Petrochemistry of the Northern Park Range, Colorado, and Its Implications for Studies of Crustal Derivation... Precambrian Petrochemistry of the Northern Park Range, Colorado, and Its Implications for Studies of Crustal Derivation...1927Precambrian petrochemistry of the northern Park Range, Colorado, and its implications for studies of crustal derivation...diorites of Elkhorn Mountain ... Olivine gabbros and peridotites of Elkhorn Mountain ....................Park Range ..................................... Colorado ....................................... Crust-mantle |  | | Book | | MINES AND MINERALS OF THE GREAT AMERICAN RIFT (COLORADO-NEW MEXICO) Sine —_—< ¢ 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 resources—Colorado. 2. Mines and mineral resources—New Mexico. I. Kennedy, Marrianna...enter must be obtained to prevent trespass. Old mine workings are dangerous and entering underground |  | | Report (volume) | | . 234 " y { " ,-t .. .~,:",. I " , COLORADO "or.! _ +, (~ STATE OF .~ :'(' COL~ADO /... BULLETIN 40 RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BlaLlllGRAPHY by James L. Nelson-Moore,...Energy COLORADO GEOLOGICAL SURVEY DEPARTMENT OF NATURAL RESUURCES STATE OF COLORADO DENVER, COLORADO 1978...ete 11 st r ng of rad i aaet 1ve occurrences 1n Colorado, with a comprehensive blbi iography and bibliographic...on the Colorado Plateau sparked several periods of exploratIon that ultimately led to a mining "boom ll |  | | Report (issue) | | prepared during the last 20 years by geologists and mining engineers of the U.S. Geological Survey and the...by Chester T. Wrucke and Clarence E. Ellis ..... Mount Baldy Wilderness, Arizona, by Tommy L. Finnell and...Drewe and P. R. Bigsby .................. . Pine Mountain Wilderness , Arizona, by Frank C. Canney and Frank...and Raymond B. Stroud . . . . . . . . Black Fork Mountain Roadless Area, Arkansas and Oklahoma, by Mary...HoraceK. Thurber . . . . . . . . . . . . . Andrews Mountain, Mazourka, and Paiute Roadless Areas, 79 California |  | | Report (issue) | | A293-A298 of this chapter. Numerous Federal, State, county, and local agencies and other organizations and...structural studies ............. . Precambrian rocks in Colorado ............... . Geologic studies .............Ohio .................................... . Rocky Mountain region ........................ . Arizona .................................... . Colorado ................................ . Kansas ...................investigations-continued Water resources-Continued Rocky Mountain region-continued South Dakota •..•...•......• |
|
