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| FLUORITE-RARE EARTH MINERAL PEGMATITES OF CHAFFEE AND FREMONT COUNTIES, COLORADO* E. Wu. HuNnrcn, Universityof Michigan...A small group of pegmatites in Chaffee and Fremont Counties, Colorado, is characterized by the association...rare earth mineral pegmatites in Chaffee and Fremont Counties, Colorado, and to compare the group with...1946 while engagedin field work in south-central Colorado. A part of the field expenseswas met by a generousgrant...Harvard University. Mt. J. E. Meyers of Canon City, Colorado, acted as guide for the writer and deservesspecial |
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| Colorado Springs Mineralogical Society Founded in 1936 December 2015 PICK&PACK Vol 55 .... Number 10...Mark Lemesany COLORADO MINERALOGICAL SOCIETYPICK PO BOX 2 COLORADO SPRINGS, COLORADO 80901-0002 December...Senior Center is located at 1514 North Hancock in Colorado Springs. For more information on any of the sub-groups...combined with the gem & mineral show); Boulder County Fairgrounds, Exhibit Building, 9595 Nelson Rd....Modreski on “Colorado Mineral Collecting” at 3 p.m. on Sunday. Thurs., Dec. 17, 6:00 p.m., Colorado Scientific |
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| 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...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...Atlas of Colorado American Gem Trails Nature As Sculptor: A Geologic Interpretation of Colorado . Scenery |
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| — _ ; 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 |
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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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| A. F. Rogers, Stanford University, Palo Alto. Colorado.........Prof. R. D. George, Boulder. Connecticut...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities: Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20, Pv. 7 E.; Jefferson...Jefferson County, at Elyton; Lee County, at Chewacla lime works; St. Clair County, at Gfeensport; Shelby |
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| ............................................. Colorado.................................................especially from those of Arkansas, California, Colorado, New Mexico, Oregon, South Dakota, Tennessee,...minerals and rocks, their occurrence and uses: Colorado State Geol. Survey Bull. 6, 1913. 8 USEFUL...See Bauxite and Halloysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton; |
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| 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 |
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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..., 2011, Development of industrial minerals in Colorado: U.S. Geological Survey Circular 1368, 87 p. Library |
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| classes: 1. Mines and mineral resources of a given county (describing kind, character, distribution and extent...special report upon the gold resources of Siskiyou County. There is Averill, District SACRAMENTO FIELD...ft. vertically in Amador County and 9000 ft. inclined depth in Nevada County, for example) have been given...top gravel on Yuba River near Smartville, Yuba County. Photo by Walter W. Bradley disquieting feature...the principal mines of the Mother Lode in Amador County during the last quarter of 1934. 'Depression miners |
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| ________ _ Beach deposits ___ -----------------Colorado _____________________________ _ Crystalline rocks...Perce Counties __________ _ Idaho CountY-----------------Valley CountY-----------------Adams, Payette,...and Gem Counties ________________________ _ Boise County ___ --------------Ada, Owyhee, Elmore, and Custer...Spruce Pine district ____________ Madison County and Haywood County _____________________ _ Zirconia district...monazite belt in the Piedmont province __ Stokes County and Surry County_ Wilkes, Alexander, Catawba, Caldwell |
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| Geology and Ore Deposits of the Front Range Colorado By T. S. LO\'ERING and E. N. GODDARD GEOLOGICAL...in cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund ~ oopr...Pre-Cambrian deposits _________________________ _ Mine descriptions __________________________ _ 39 39...disseminations_ Cotopaxi mine _____________________ _ Copper deposits in Jefferson County __ _ F. M.D. property...property _____________ _ Malachite mine ________________ _ Empire mine __________________ _ Hypothermal replacement |
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| . Paoli mine................................................... Deposits near the Paoli mine. ............... 9 9 11 11 Deposits near Dudley, Kings County .......................... 12 Lost Hills................. 14 Deposits near McKittrick, Kern County ........................... California Gypsum and................°...... .............. San Benito County ........................................... 17...deposit........................................ Buena Vista Lake ....................................... |
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| commercial ores and secondary minerals by state, county, township, and geologic range. For easy identification...61 232 PART The Making 43 II 5 7 3 III Mine PART 267 IV Glossary 279 Bibliography 291...cities, and many of today’s prosperous western county seats began as mining-boom camps. trating sand...Whether you such as those listed alphabetically by county, township, and range in Part II of this book. Where...minerals which make lovely cabinet specimens. old mine western states, to kick up and oxidation, |
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| classes: 1. Mines and mineral resources of a given County (describing kind, and extent of development). ...Mineralogist's Report XXVII. 1 Redding, county seat of Shasta County, is located at the extreme northern...into the Pacific Ocean. Weaverville, county seat of Trinity County, is at the west edge of the area, on...addition to these main roads, a large mileage of county and forest roads makes nearly all parts of the...mineral resources of Trinity County, and that for April, 1926, those of Shasta County. These publications are |
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| Geology of the Cerro Gordo Mining District Inyo County, California By C. W. MERRIAM , GEOLOGICAL SURVEY...Gordo mine _____________________________ _ History of the Cerro Gordo mine ____________ _ Mine development...Production of the Cerro Gordo mine _________ _ 8 Geology of the Cerro Gordo mine ____________ _ 8 Rocks of...of the Cerro Gordo mine __________ _ Sedimentary rocks _________________ _ 9 Igneous rocks _____________________...strike __ _ 17 Ore occurrence in the Cerro Gordo mine __ _ Union chimney ____________________ _ 18 Jefferson |
 | | Journal (article/letter/editorial) |
| about 35 miles northwest of Flagstaff, in Coconino County, a pineforested volcanic area. The elevation is...what 1 believe to be obsidian, and clear yellow plagioclase. I gathered some of the sand from the stream-bed...in California recently I visited the Los Angeles County Museum in Los Angeles to see the famous collection...in Los Angeles can walk across the lawn to the County Museum for another thrill—the display of some of...loganberries. Alas, almost no localities are mentioned." COLORADO—Some months ago we received a letter from Carl |
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| is located in the Plomosa mining district, Yuma County, Ariz., in the southern part of the Dome Rock Mountains...the heat is more intense in this vicinity along Colorado River than in any other part of the United States...Tucson into the Gila, which in turn joins the Colorado at Yuma. In a reconnaissance of the mineral deposits...molybdenite occurs at two localities the Leader mine and the Ridley mine. 154 MOLYBDENITE IN SANTA RITA AND PATAGONIA...ECONOMIC GEOLOGY, 1909. PART I. LEADER MINE. The Leader mine, one of a group of copper mines owned and |
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| centers of the state exhibits of minerals, rocks, mine models, etc. a service laboratory for the determination...from Pittsburg, Contra Costa County, and Oceano, San Luis Obispo County. Fig. 1. DETERMINATION OF FINENESS...47 Contra Costa County Antioch-Marchio sand Pittsburg-Roberts sand Los Angeles County El Segundo Beach...Hill deposit Monterey County Del Monte sand Lapis No. 2 sand San Francisco County San Francisco Dune sand...Luis Obispo County Oceano Beach sand NATURALLY BONDED SANDS 48 48 48 50 50 Alameda County Livermore |
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| C. A. Michael. COLD NUGGET FROM SPOTSYLVANIA COUNTY: Longest dimension approximately 13 cm., photograph...updated “check list” just alluded to, (2) a county-by-county listing of the minerals, and (3) resumes of...(Haydcnitc) 9 Virginia Mineral Localities by County This list is included for possible aid in planning...listed only* if localities arc given for them. The county lists do not include com mon rock-making materials...to occur only as traces. ACCOMACK COUNTY: none given. ALBEMARLE COUNTY: actinolitc, agate, almandine, amethyst |
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| ever since. Besides the La Grange mine, the largest hydraulic mine now in active operation, it contains...mines, particularly in the northern portion of the county. Large bodies of gravel of lower grade yet remain... Murphy, of the Union Hill mine; Mr. Pierre Bouery, of the La Grange mine; Mr. W. D. Ayers, of Poker...Globe mine; but more particularly to Mr. H. L. Lowden, formerly county surveyor of Trinity County, who...the whole of Trinity County except the south end and also the part of Humboldt County about the Hoopa Reservation |
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| Sacramento Field District 7 Gold Mines of Placer County 7 San Francisco Field District 07 Los Angeles...classes: Mines and mineral resources of a given county (describing kind, character, distribution and extent...Mining Engineer GOLD MINES OF PLACER COUNTY Foreword. Placer County, taking its name from the Spanish meaning...Penryn and Rocklin; copper, chromite, iron ore (this county having once suplimestone, ported the only blast...mostly idle ; Topography, Rainfall. Placer County extends from the eastern side of Sacramento Valley |
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| ...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |
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| ...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |
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| xenoliths, Vulcan’s Throne, Grand Canyon, Arizona. USA 1629 ALAN M. STUEBER,PAUL PUSHKARand ERNESTA....at 2.5OCand I atm total pressure 2021 ALAN L. CHAFFEE,MICHAELG. STRACHANand R. B. JOHNS:Polycyclic aromatic...ROSAMOND J. KINZLER:Coupled CaAl-NaSi diffusion in plagioclase 211.1 feldspar: Experiments and applications...geothermal waters of Yellowstone National Park, Wyoming, USA 2541 DONALDB. DINCWELL and C. K. SHEARER, J. J...NORDSTROM:Stable isotope geochemistry of acid . . . mine drainage: Experimental oxidation of pyrite 2669 |
