 | | Report (volume) | | Economic Geology of the Idaho Springs District Clear Creek and Gilpin Counties, Colorado GEOLOGICAL (=) I...Geology of the Idaho Springs District Clear Creek and -i ;i ?i Gilpin Counties, Colorado By ROBERT H. MOENCH...___________ Mines and prospects in the Idaho Springs district ________________ Previous studies.____...the veins____-_-_-__________.___________________ Pyrite veins ______________________________________________...sequence of primary vein minerals ____________________ Pyrite stage_______________r ______________________________ |  | | Report (issue) | | Nines and Prospects, Idaho Springs District Clear Creek and Gilpin Counties, Colorado Descriptions and Kapa...Energy Commission Introduction The Idoiho Springs mining district forms an important segment of tae Front...From 1859, when placer gold was discovered in Idaho Springs and lode gold in Central City, through 1959...from a 50-square-mile area that includes the Idaho Springs and adjacent districts to the north, west, and...and southwest. The adjacent Central City district, which produced ores valued at more than $100 million |  | | Report (issue) | | 1965. 1966. 1967. 1968. Numerous Federal, State, county, and local agencies and other organizations and...-___ California. _ __________________________ Colorado ______________________________ Montana. _____...Mountains_--_-------------- A41 Precambrian rocks of Colorado.__________ 41 41 Mesozoic stratigraphy.__________________...Dakota___________--------------75 Utah-..-.__-. -77 Colorado-____ ___________-.----77 Kansas.--.__.______-_-_..._-_--__-_Nevada __ ___________________________ Idaho. __..___.--___-_-_----_--___-__-_ California ____ |  | | Journal (issue) | | ................. 12 coming full circle with a little blue crystal Collecting on Peridot Mesa ........persuasion, I was able to remove it and grind just a little more off—too much! The cabochon was now too small...60 grit sintered grinding wheel. It still had a little fracture, which I was able to remove with this...gemstone looked great, but I wanted the mounting a little shinier. This was achieved on another buffing wheel...Mineral Society; Palmer Events Center; 900 Barton Springs Rd.; Fri. 9-6, Sat. 9-6, Sun. 10-5; adults $5, |  | | Report (issue) | | A293-A298 of this chapter. Numerous Federal, State, county, 1and local agencies and other organizations and...__ _ Maryland _____________________________ _ Virginia ________ -_-_------------------North Carolina_--...-----------Arizona _______________________________ _ Colorado _______ --_-------------··------ v A35 35 36...___ _ Nevada _______________________________ _ Idaho ________________________________ _ Page Worldwide...cooperators ____________________________ _ 251 State, county, and local cooperators ______________ _ 251 Other |  | | Journal (volume) | | coal famine " in California the Oregon coal-mining helping is Near regions. Marshfield heretofore...Coos Jubilee and other rich shoots might be cut in county, in which Marsh&eld is situated, has a the eOOfoot...& Co. o( years, $21,841,000. this city. — Mining and Scientific Press. chase (50F?.F^ESP0JMDENCE...—Mention not having been your paper for some little time, I will endeavor to give an account of what...its recovery, with the result that in the old District Court judgment was pronounced in hia favor. An |  | | Report (issue) | | Concentric structure in elongate pillows, Amador County, Calif., by W. A. Duffield._______________________________...__________ Ultramafic xenoliths in basalt, Nye County, Nev., by N. J. Trask___-____-___________----_...in Pliocene lacustrine rocks near Rome, Malheur County, Oreg., by R. A. Sheppard and A. J. Gude 3d. Twinning...Eocene age in the Spanish Peaks area, Las Animas County, Colo., by J. D. Vine_________________________...Hope______________________-___-----------_-----------_Basin Creek uplift and Heart Lake Conglomerate, southern Yellowstone |  | | Report (volume) | | Arizona. II. Massive structure in diorite, Sliasta County, California.........:. III. Rhombohedral jointing...jointing in gneiss, Potoinac River near Washington, District of Columbia.....................................VIII. Clay bank at Brick Haven, Virginia,, opposite Washington, District of Columbia ....................filled with sand, from the Grand Canyon of the Colorado, Arizona................................ XIII...Chain Bridge, District of Columbia.. XVI. Thin sections of siliceous oolite from Center County, Pennsylvania |  | | Book (volume) | | CALHOUN COUNTY. By A. H. Worthen Pages CHAPTER 1 to 23 to 42 II. GEOLOGY OF PIKE COUNTY. By ...GEOLOGY OF ADAMS COUNTY. By A. H. Worthen Pages 43 to 61 CHAPTER IV. GEOLOGY OF BROWN COUNTY. By A, H...CHAPTER Pages 62 to 74 V. GEOLOGY OF SCHUYLER COUNTY. By A. H. Worthen Pages 75 to 89 TA35LE OF CONTENTS...CONTENTS. IV CHAPTER VI. GEOLOGY OF FULTON COUNTY, Pages 90 to 110 By A. H. Worthen CHAPTER VII...KENDALL COUNTY. By Pages 136 to 148 Henry M. Bannister CHAPTER X. GEOLOGY OF MORGAN COUNTY. Pages |  | | Journal (issue) | | 212 $3.75 3.75 3.75 3.75 4.25 4.25 'SIX- PACK . SPECIAL - Buy SIX drills of any one size and SAVE .....problems ~ • \ • '' SHAPE Price Price for Each Six-Pak • L-B1 $5.95 $34.00 ,-...; I I L:r1 L-R1...70001 Audra Snowe, Treasurer Rt. 4 , Bo,c 880. Hot Springs, AR 71901 Anita Shier. Secretary 6315 Vanderbilt...pieces- $60 per gram C. GOLD BASE C RYSTAL Clean, little waste-red, blue, orange and green colou r patterns...i11 (;pm ()mtlit~ C ry~tal opal. \\\• havt' been mining and d ealing in opal fur 8 years. lnh'Krit~ all(l |  | | Book | | University of California Berkeley, California Weste-n Mining in the Twentieth Century Oral History Series J...porphyry copper deposits, alliances with international mining companies, problems in business in Latin America...Interviewed in 1998 by Eleanor Swent for the Western Mining in the Twentieth Century Oral History Series. The...Manager of Cove School Drilling Camp, Arizona District Manager, Holbrook, Arizona Study of Mapping Fossil...GRADUATE STUDY AT STANFORD, 1954 TO 1955 Shifting from Mining Engineering to Geology Paleontology Professor Simon |  | | Journal (issue) | | WASHINGTON November 5, 2011 9:00 am to 5:00 pm Clark County P. U. D. Building 1200 Fort Vancouver Way Vancouver...filiform crystal of pyrite. The growth would be long and thin, in spite of the fact that pyrite is a cubic mineral...one of the equivalent directions. The result in pyrite would be a rightangle bend. Thus this process gives...So-called “nanoLaboratory-grown filamentary materials springs” of this type have been formed from a (a) showing...twist All the other minerals under consideration – pyrite, Each is about 1mm long. copper, cuprite, boulangerite |  | | Book (volume) | | from mountain summits, drawn by means of a camera. Six sheets, combining the topography, contour lines,...Hampshire. Geological map of the Ammonoosuc mining district. ILLUSTRATIONS NOT PRINTED HELIOTYPES ...Contoocook valley which extends through Hillsborough county was thus occupied by a lake during a large part...to each other. kames extends from Saco river to Six-mile pond, and from Ossipee lake south-easterly along...higher. The excavation of the old drifts has been six or seven feet in depth, as shown by great stumps |  | | Journal (volume) | | Bryoioa, 617;: Frazer’s Reports of Progress in the District of York, Adams, C Penna., 620; Fourteen per in...average native, especially in the far north, there is little but a struggle for existence with a niggardly environment...performances, full of excitement and interest, still have little to satisfy the love of enjoyment latent in every...as rapidly as possible, one day they came upon a little open spot by the bank of a stream where were two...faraway. The women had denied themselves to save little bits for a child some two years old, whose thin |  | | Journal (volume) | | Borer, 913; Defoliation of nitstrees in Perry county, Pa., 914; Efficacy of Chalcid pilosus Thoms....156; in North ete Gods, 331; ee be| shiy iaee county, Ohio, 332; The Anthropological Institute of Great...species of Fossils from Qbio,:755; Davis on the: Little Mountains east of the Catskills, 755; tion, 830;...75 rikal $: i rite, | 164; Helvite from grg county,Misaa, 337; A new Manganese mineral, 338 ; Galena...423; eh otishminerals, “n eran Monazite from Virginia, 423; Some Leucoxite and Titanomorphite, 424; |
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