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| Thorium and Rare-Earth Minerals in Powderhorn District, Gunnison County, Colorado By J. C. OLSON and...Page PLATE 55. Generalized geologic map of Powderhorn district showing localities examined....____________________________...86. Index map of Colorado, showing location of Powderhorn district, Gunnison County, Colo_-__-__--_-_-_----_-_--_...of 11 samples of veins and carbonate rocks, Powderhorn district____________________________________...Deposits showing abnormal radioactivity, Powderhorn district 700 704 707 718 A CONTRIBUTION TO ECONOMIC |
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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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| INTERIOR ALKALIC ROCKS OF IRON HILL GUNNISON COUNTY, COLORADO GEOLOGICAL SURVEY PROFESSIONAL PAPER 197-A...Paper 197-A ALKALIC ROCKS OF IRON HILL GUNNISON COUNTY, COLORADO BY ESPER S. LARSEN Shorter contributions...Alterations of melilite_ ______________________ Zeolites, cancrinite, and anal cime _____________ Other...Page PLATE 1. Geologic map of Iron Hill area, Gunnison County, Colo____---__,______-.___-___-_--___-_-_--_---___-__..._____________ 18 4. Section south of Deldorado Creek, showing variation in pyroxenite,______________ |
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| Prepared in cooperation with the Colorado Geological Survey for the United States Department of Agriculture...Service Development of Industrial Minerals in Colorado Circular 1368 U.S. Department of the Interior...Survey Development of Industrial Minerals in Colorado By Belinda F. Arbogast, Daniel H. Knepper, William...John S. Dersch Prepared in cooperation with the Colorado Geological Survey for the United States Department...the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards |
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| ............................................. Colorado........................................................................................ 102 District of Columbia ....................................to refer to Geological Survey Bulletin 507, "The mining districts of the western United States," and to...abundant it may have been completely exhausted by mining or quarrying. Deposits of minerals that are widely...because they occur in sufficient quantity to warrant mining for their usual products, but because they furnish |
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| Series 30 Bibliography and Index of Colorado Geology, 1984-1989 Colorado Geological Survey Department of...Resources Denver, Colorado 1990 Information Series 30 Bibliography and Index of Colorado Geology, 1984-1989...Institute under contract to the Colorado Geological Survey Colorado Geological Survey Department of...of Natural Resources Denver, Colorado 1990 ii FOREWORD In recognition of the need to more effectively...published literature on the state's geology, the Colorado Geological Survey is pleased to release Information |
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| GEOLOGICAL SURVEY Locatable Mineral Reports for Colorado, South Dakota, and Wyoming provided to the U.S.............................................. 1 COLORADO ................................................Offer ..................................... 3 Gunnison National Forest Crested Butte Mountain Resort........ . . ............ 10 Pike National Forest County of El Paso (Black Forest) Land Exchange Offer ...131 Roosevelt and Gunnison National Forests Mary Ross Quaintance Estate/Bear Creek Development Corporation |
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| GEOLOGY OF THE SAN JUAN REGION OF SOUTHWESTERN COLORADO BY WHITMAN CROSS AND ESPER S. LARSEN UNITED...granite-of ConejpsiRiver_______. ..-______-__-_.___ Gunnison River area. ____ ______ __.__._._.__ _ ________...57 57 57 58 59 59 60 60 61 61 62 62 62 63 Tracy Creek andesite_-_____--_________l____________________...__-__ Resources. ____ __ ^_____ _ ______ Metal mining.._____________-_-------__--_-______-____--_____Production...of the San Juan region, Colorado _________ In pocket 2. Relief map of Colorado showing the relation of |
 | | Report (volume) |
| it helpful to refer to Survey Bulletin 507, "The mining districts of the western United States," and to...abundant, it may have been completely exhausted by mining or quarrying. Deposits of minerals of wide distribution...because they occur in sufficient quantity to warrant mining for their usual products but because they furnish...A. F. Rogers, Stanford University, Palo Alto. Colorado.........Prof. R. D. George, Boulder. Connecticut...Collier, Eugene. Pennsylvania.... .Mr. R. R. Hice, Beaver. Prof. Florence Bascom, Bryn Mawr. Rhode Island |
 | | Journal (article/letter/editorial) |
| material in the United States was at the Rutherford mine near Amelia Courthouse, Virginia, where large amounts...gems. Noted from Pala, California; Mt. Antero, Colorado; some localities in Chester and Delaware counties...pegmatite near the Royal Gorge in Fremont County, Colorado. Common in the pegmatites of Yavapai and Maricopa...a number of pegmatites. It may 235 be colored white, pale green, amber-yellow, honey-yellow, wine-yellow...colored. Grossularite is found in the Ben Nevis Mine on San Augustin Peak, Organ Mountains, New Mexico; |
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| 193-256 137-208 129-192 209-264 193-256 [ [ COLORADO-Ill] 177-256 121-184 89-168 1-120 1-88 [ ...177-256 185-280 169-248 [ 425-528 337--400 COLORADO-II] 321--400 337--400 ARIZONA-Ill] 337--400...69-132 65-128 1-64 11 / 1980 20 I 1989 [ COLORADO-I] [ 289-352 385-448 [ AUSTRALlA] 353-504...On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN Famous mineral |
 | | Journal (article/letter/editorial) |
| with its representation of mining tools clearly proclaim Montana’s mining origins. Montana’s production...published describing the occurrence, collecting, mining, and cutting of the two state gemstones. Figure...Granville Stuart established Montana’s first mining camp at Gold Creek in 1860. Geologic Provinces The state...MICHAEL J. GOBLA 19055 East Bethany Place Aurora, Colorado 80013 gobla@copper.net Unless otherwise noted...view showing the Indian Queen mine ca. 1905 at Farlin, Beaverhead County. 208 ROCKS & MINERALS Downloaded |
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| ALTERATIONS OF THE UNCOMPAHGRITB OF IRON HILL, COLORADO Espun S. LensBNl aut E. A. GonaxsoN Aesrnacr The...a coarse-grained melilite rock from Iron Hill, Colorado, ofiers an unusually good opportunity to follow...Cebollite.. Undetermined mineral B. BrugnatelJite Zeolites Amphibole, chlorite, aegirite, and mica SucnsssroN...making a geological map of the San Juan region, Colorado, fgr the United States GeologicalSurvey. The laboratory...located in Gunnison County, Colorado, about 20 miles south 20o west of the town of Gunnison and a few |
 | | Book (edition) |
| science of the physical and historical aspects of the Earth as 3 revealed to us in rocks. Since the rocks...mineral. 5 Test this by rubbing the mineral on a white, hard ceramic plate, or, if necessary, by grinding...Brilliant white when fresh, but tarnishes easily to black or grey Streak: Shining silver white Lustre:...Michigan. Found in Colorado at Aspen and in Boulder County; also in several mining areas in Arizona. Good...rarely with orange tint Streak: Gold yellow, slight white or Lustre: Metallic orange tint Hardness : 2.5-3 |
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| science of the physical and historical aspects of the Earth as 3 revealed to us in rocks. Since the rocks...mineral. 5 Test this by rubbing the mineral on a white, hard ceramic plate, or, if necessary, by grinding...Brilliant white when fresh, but tarnishes easily to black or grey Streak: Shining silver white Lustre:...Michigan. Found in Colorado at Aspen and in Boulder County; also in several mining areas in Arizona. Good...rarely with orange tint Streak: Gold yellow, slight white or Lustre: Metallic orange tint Hardness: 2.5-3 |
 | | Journal (article/letter/editorial) |
| Canyon vofcanics (undivided) GEOLOGIC MAP OF THE BEAVER CREEK AREA WEST OF MARYSVALE, UTAH MOLLOY AND KERR...chemical and mineralogical reaction to alteration. Zeolites, quartz, and feldspar represent primary alteration...Belknap volcanic Gray Hills rhyolite 219 group 227 Beaver Hill tuff 219 12. Fault pattern and monzonite intrusives...Belknap rhyolite 222 1. Geologic map of the Beaver Creek area west of Glass in the Mount Belknap volcanic...volcanic group . 222 Marysvale, Utah 211 Clear Creek tuffs 224 Following Structure 224 2. Compaction features |
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| .3 COLORADO. of COLORADO. J. S. l GEORGETOWN, COLO. GEORGETOWN COURIER PRINT. 1887. 3 Bancroft...From a mineralogical point of view the wealth of Colorado exceeds that of In the metallic minerals almost...to in the following pages Proceedings of the Colorado Scientific Society. Proceedings of the Academy...the U. S. Geological Survey. J. GEORGETOWN, COLORADO, January, 1887. S. RANDALL. : MINERALS...gold-yellow, sometimes inclining to silmasses. ver-white. Very ductile and malleable. Hardness 2*5 to 3. |
 | | Journal (article/letter/editorial) |
| PHYSICAI/ PROPERTIES Color: pale yellow, almost white. Translucent. Luster, somewhat pearly. Form: tabular...phosphate (believed to be new) at the IIudson Bay mine, Salnio, British Columbia. [The abovepropertiesare...Josppn E. pooun of Norrhwestern University. Eng. Mining J., lVZ, (6), 25S-2b9, 1916. Abstract reprinted...SMITH'S FLAT. Bunn EveNs, of placerville, Cal, Eng. Mining J.l@, (19), 8llt-8l5, tgl6. A record of the finding...brief description of anhydrite occurring in bluish-white tabular aggregates in trap at Larrabee's Quarry |
 | | Report (issue) |
| prepared during the last 20 years by geologists and mining engineers of the U.S. Geological Survey and the...and the deposits that have not been discovered. Earth science in its present state of development can...them; they reflect the state of development of the earth sciences as they pertain to detecting concealed... . . Alabama ........ . Adams Gap and Shinbone Creek Roadless Areas, Alabama, by T . L. Klein and Donald...Donald K. Harrison Big Sandy, West Elliotts Creek, and Reed Brake Roadless Areas, Alabama, by Sam H. Patterson |
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| History of Mines in the Smiley Creek Area of the Vienna Mining District, Blaine and Camas Counties, Idaho... History of Mines in the Smiley Creek Area of the Vienna Mining District, Blaine and Camas Counties, Idaho...History of Mines in the Smiley Creek Area of the Vienna Mining District, Blaine and Camas Counties, Idaho...History of Mines in the Smiley Creek Area of the Vienna Mining District, Blaine and Camas Counties, Idaho.... . . . . . . . . . . . . . . . . . . 15 Vienna Mine.. . . . . . . . . . . . . . . . . . . . . . . . |
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| indicate annotation of thesis title by addition of county. Capitalization of terms in revised abstracts was...particular to Mis s Edith Rich, and to the Natrona County Library, for procuring theses. Many university...WARD OWEN, 1951, Cambrian diabase flow in [Utah County], central Utah: Brigham Young Univ. M. S. thesis...Siltstone at the base of the Chinle Formation on the Colorado Plateau shows alteration features associated with...washingtonensis. Basal Chinle outcrops along the Colorado River gorge 11 miles east of Moab, Utah, show |
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| ...................... 1. Rocks from Aroostook County..... ^..................'........... 2. Miscellaneous............................... Maryland and the District of Columbia.....................................1. Elliott County dike............................................... 2. Crittenden County dike..................................... 2. Crystal Falls district, Michigan.................................. ....................... Schist from the Aragon iron mine............................... ill 17 .18 18 19 |
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| WASHINGTON November 3, 2007 9:00 am to 5:00 pm Clark County P. U. D. Building 1200 Fort Vancouver Way Vancouver...of Eugene, Oregon near the town of Trent in Lane County, Oregon, just southeast of Springfield/Eugene (Staples...Rattlesnake post office was established near Rattlesnake Creek in 1868. Later the name was changed to Trent in...still appears on most maps, as does Rattlesnake Creek. Much speculation has been made about the agate...proceeding from Trent south along the Rattlesnake Creek road, crossing Highway 58 to the Southern/Union |
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| WASHINGTON November 8, 2008 9:00 am to 5:00 pm Clark County P. U. D. Building 1200 Fort Vancouver Way Vancouver...the beautiful spessartine from Ruby Mountain, Colorado. So we chalk up another mineral to look for in...small alkalic intrusions of Tertiary age. Most zeolites are associated with these intrusions either as...as primary or secondary minerals. Zeolites are also present, in very small amounts, in bentonite deposits...Museum (MTMM) at Montana Tech. Analcime Blaine County: Igneous rocks, Bearpaw Mountains (Tureck-Schwartz |
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| 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...GEOLOGY AND PETROLOGY OF THE SAN JUAN REGION, COLORADO vard University contributed liberally by financing...topographic maps covering much of the area. Many of the mining men and other residents of the San Juan region...carried on C. W. Hayes, Waldemar Lindgren, David White, and W. C. Mendenhall have supported it so far as |
