 | | Report (volume) | | Resources of the Redcloud Peak and Handles Peak Wilderness Study Areas, Hinsdale County, Colorado U.S. GEOLOGICAL...Resources of the Redcloud Peak and Handles Peak Wilderness Study Areas, Hinsdale County, Colorado By RICHARD...KORZEB U.S. Bureau of Mines U.S. GEOLOGICAL SURVEY BULLETIN 1715 MINERAL RESOURCES OF WILDERNESS STUDY...STUDY AREASSOUTHWESTERN COLORADO DEPARTMENT OF THE INTERIOR DONALD PAUL MODEL, Secretary g U.S. GEOLOGICAL...CO 80225 Library of Congress Cataloging-in-Publication Data Mineral resources of the Redcloud Peak |  | | Report (issue) | | DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Geology, Mineralogy and Paragenesis of the Pride of America Mine...Mine, Lake City, Hinsdale County, Colorado by Richard F. Sanford, Ann M. Kramer, and Hugh O'Brien Open-file............... Geology of the mine area..................................... Mine workings and production...MINERALOGY AND PARAGENESIS OF THE PRIDE OF AMERICA MINE, LAKE CITY, HINSDALE COUNTY, COLORADO By Richard F. Sanford...Kramer, and Hugh O'Brien ABSTRACT The Pride of America Mine exposes two classic fissure-type veins in |  | | Report (volume) | | DEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY GEORGE OTIS SMITH, DIRECTOR BULLETIN 4=78...4=78 GEOLOGY AND ORE DEPOSITS NEAR LAKE CITY, COLORADO BY JOHN DUER IRVING AND HOWLAND BANCROFT WASHINGTON........................................ Official mining districts........................................andesite.............................................. Henson tuff................................................... Hinsdale volcanic series........................................... Lake City district....... |  | | Journal (article/letter/editorial) | | VOL. 75 OF THE SOCIETY THE OF NOVEMBER, ECONOMIC GEOLOGISTS 1980 MultistageVein Ores of the Lake...Lake City District, Western San Juan Mountains,Colorado John,• F. SL^CK U.S. Geological Survey, Federal...Polymetallic vein ores of the Lake City district, in the western San Juan Mountains, Colorado,have producedapproximately$12...arcuate belt around the north, northeast,and east sides of the 22.5-m.v.-old Lake City caldera. The veins,typically0...faults outside the ring fault of the Lake City caldera and within the moat area of the older (28 m.y.) Uncompahgre |  | | Journal (article/letter/editorial) | | COLORADO e Gold Hill 0 DENVER Wulfenite Occurrences in Colorado Leadville 0 1 Tincup 03 . 4 Lake...ROSEMEYER 1632 Camp Bird Mine Road P.O.Box 586 Ouray, Colorado 81427 CONNOISSEURS OF WULFENITE probably do...do not think of Colorado as a noteworthy state that has produced fine specimens of wulfenite. Surprisingly...Surprisingly though, fine microcrystals of wulfenite have been found in a variety of ore deposits throughout the...the state. A good portion of the Colorado wulfenite localities do not compare with those in Arizona and |  | | Report (issue) | | DEPARTMENT OF THE INTERIOR H~bert Work, Secretary U.S. GEOLOGICAL SURVEY George Otis Smith. Director...Director Professional Paper 138 MINING IN COLORADO A HISTORY OF DISCOVERY, DEVELOPMENT AND PRODUCTJON BY ...PUBUCATION MAY BE PROCURED. .)ROM THE SUPERINTENDENT OF DOCUMENTS GOVERNMENT PRINTING OFFICE WASHINGTON,...__________________________ .. _______ _ The first discoveries of gold _____________________ _ Chronologie record __________...location, area, and organization of the mining counties of Colorado _________________________ _ Adams |  | | Report (issue) | | Bibliography and Index of Colorado Geology, 1984-1989 Colorado Geological Survey Department of Natural Resources...Resources Denver, Colorado 1990 Information Series 30 Bibliography and Index of Colorado Geology, 1984-1989...contract to the Colorado Geological Survey Colorado Geological Survey Department of Natural Resources...Resources Denver, Colorado 1990 ii FOREWORD In recognition of the need to more effectively utilize the...the immense store of published literature on the state's geology, the Colorado Geological Survey is pleased |  | | Journal (volume) | | whioh was the Urgest of the lakee of the Great Basin, was fed ohlefly by the snowa of the Waeatoh and Uiatah...oatobment basin embraced about five de> greea of latitnde and three of loneitode, ooDtainlng about 54,000 square...fourth part of the area of the Great Basing This region of Utah has been made a aubjeot of speoial study...study of late years by the U. S. Geological Survey, and many facts of great scientiflo interest have been...been developed. Of the various volcanic districts of Utah, that which is the most interesting this in |  | | Book | | I - ,=: CJ? UBY & SAPPHIRE is a journey into one of mankind's most fascinating subjects. A technical...& Sapphire is just such a book-a rare combination of face and fun, the pertinent and che peculiar. Open...great. Explore the legendary Valley of Serpents, into which pieces of meat were cast co trap tubies. And...the lofty snows of Kashmir, home of storied blue-velvet sapphires. These are but a few of the amazing and...more. T he product of over 15 years of firsthand experience, it covers every facet of che subject fro1n |
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