 | | Report (issue) | | N T I F I C A N D T E C H N I C A L S T A F F SILVER ORES BY Ha B. CRONSHAW, , P h , D . , A.R.S.M....B . CRONSHAW, B.A., PH.D., A.R.S. M. 5 s . net SILVER ORES. B y H . B. CRONSHAW, B.A., PH.D., A.R.S.M...N T I F I C A N D T E C H N I C A L S T A F F SILVER ORES BY H . B. CRONSHAW, B.A., Ph.D., A.R.S.M....supplies of minerals, especially within the Empire, new methods of usage and other commercial developments...Empire. N o attempt has been made to give details of mining or metallurgical processes. HARCOURT, Chairman |  | | Book (edition) | | YEAR 1687"—DAVID T. DAY, CHIEF OF THE DIVISION OF MINING STATISTICS AND TECHNOLOGY WASHINGTON GOVERNMENT...channels of trade, transportation and consumption, new utilizations, and recent discoveries, have, to a...most part, have been progressive. In addition to new finds of valuable deposits, many of the occurrences...has therefore seemed advisable to pre sent such new information as may bring the whole subject more nearly...exten sive deposits, such as coal and iron fields, gold belts, etc., are mentioned in general terms. 688 |  | | 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...Prof. H. E. Gregory, Sheffield Scientific School, New Haven. Delaware.........Prof. B. L. Miller, Lehigh...Tangier Smith, Berkeley, Cal. New Jersey...... .Dr. H. B. Kummel, Trenton. New York.........Mr. D. H. Newland |  | | Report (issue) | | in felsic and intermediate rocks 3.3 Volcanogenic gold 4. Sediment hosted 4.1 Red-bed green-bed copper...Epithermal Au, quartz alunite type 5.6 Hot spring gold 5.7 Disseminated Hg 5.8 Silica carbonate Hg 5.9...Norte Cty, CA Santa Helena, Antioquia, Colombia Goto Mine, Luzan, P.I. References Wells, F. G. et al 1946...alloys, PGE sulfides, pentlandite, pyrrhotite native gold, PGE arsenides. Assemblage 2: Ti-V magnetite, Pt-Fe...magnetite skarns may be rich in gold, gold+base metal sulfosalts in veins, gold placers Metal Concentrations |  | | Report (volume) | | ....................................... 102 District of Columbia .......................................... New Hampshire........................................................... 190 201 New Jersey.............. New Mexico............................................................. New York. .........F. C. Schrader: Besides giving several thousand new localities of mineral deposits and adding more than...to refer to Geological Survey Bulletin 507, "The mining districts of the western United States," and to |  | | Report (issue) | | Oregon can be used: (1) to characterize the gold and silver grades and sizes in deposits yet to be discovered...maximum depths, target areas, and overall lengths of mine workings for use in environmental assessment. The...the known deposits have gold grades (fig. 5) between 13 and 23 grams (g)/t. Silver grades (fig. 6) are reported...target area of 160 hectares (fig. 8). Depth of mining in known deposits range from 31 to 915 m. The geometric... Eighty percent of the deposits have subsurface mine workings lengths between 1,100 and 5,900 m (fig |  | | Journal (article/letter/editorial) | | 20:52 13 January 2015 Mineralogy of the Eldorado Mine YA N K E E B O Y B A S I N , O U R AY C O U N T...city in Columbia, South America, that was rich in gold and treasure. The name is also synonymous with a...a place or source of fabulous wealth in gold, and it can also be used in a metaphorical sense to indicate...the name, as almost every major mining camp had a vein, claim, or mine with that name. This article details...history, geology, and mineralogy of the Eldorado mine in the San Juan Mountains of southwestern Colorado |  | | Book | | stumble over a valuable nugget and stake your own mining claim? Indeed it to is, and author book Jay...prospecting, he points out, is in abandoned mining districts, where valuable mineral ores are present...commercial ores and secondary minerals by state, county, township, and geologic range. For easy identification...Jay Ellis Ransom )' HARPER & ROW, PUBLISHERS New York, Evanston, and London A RANGE GUIDE TO MINES... Publishers, Incorporated, 49 East 33rd Street, New York 16, N. Y. * FIRST EDITION LIBRARY OF CONGRESS |  | | Report (issue) | | Principal Gold-Producing Districts of the United States By A. H. KOSCHMANN and M. H. BERGENDAHL GEOLOGICAL...description of the geology, mining history, and production of the major gold-mining districts in 21 States...relations ---------------------------History of gold mining and trends in production_ J\labama ---------...--------------Cleburne County ----------~----------------- Tallapoosa County --------------------------Alaska...------------------Cochise County -----------------------------Gila County --------------------------------Greenlee |  | | Report (issue) | | THE LOS BURROS DISTRICT, MONTEREY COUNTY, CALIFORNIA. By JAMES M. HILL. INTRODUCTION. The following...prospects of the Los Burros district, in the southwestern part of Monterey County, Calif., are based on observations...properties and the caretaker at the Buclimo mine. The district lies on the west side of the rugged Coast...Coast Range, near the south line of Monterey County, in Tps. 23 and 24 S., R. 25 E. Mount Diablo meridian...500 feet above sea level. GEOLOGY. The whole district is underlain by rocks of the Franciscan formation |  | | Book | | volume is dedicated is four-fold: (1) To locate by mine, deposit, or community those mineralized areas of...Co. Hematite CALERA, Shelby Co. Wavkllite CLAY COUNTY, Sec. 24. T. 19 S R., 7 E. STATUARY, Coosa Co...Co., (W. border of* Marble Crystalline TALLADEGA COUNTY Marble, (crystalline) VALLEY HEAD, DeKalb Co. Hematite...VILLAGE SPRINGS, Blount Co. Hematite WOODS COPPER MINE, Cloaburne Co. Sphalerite ARIZONA COVEI.I.ITE...Feldspar HISSOP, Coosa Co., (near) Beryl JACKSON COUNTY Hematite KENNEDYS, Clay Co., (near) Magnetite MILLERVILLE |  | | Book (volume) | | ............................................288 New Hampshire .....................................................................................307 New Jersey .....................................................................................315 New Mexico ...........................................................................................329 New York..............................................................548 Table of Maps Page Alabama County Map .......................................... |  | | Book | | K FIELD GUIDE to the GEMS and MINERALS of MEXICO (Exclusive of Baja California) A guide to the...Spanish-English, English-Spanish glossary of gem, mineral and mining terms. BY PAUL WILLARD JOHNSON Price $2.00 r...Information............ Driving in Mexico................... Trailcring in Mexico ............. 5 6 6 7 8 8........ A Word to the Wise ............. Jade in Mexico......................... Manto and Chimney Deposits...El Antimonio District Cananea District ...... Arizpe District ........... Nacozari District ...... Moctezuma |  | | Journal (article/letter/editorial) | | On 25 April 1890, Congress selected Chicago over New York City to host an “international Exposition of...Industries and Manufactures, and products of the soil, mine, and sea.” In 1893, Chicago had a population of...Among the buildings were Transportation, Mines and Mining, Electricity, Manufactures and Liberal Arts, Administration...Exposition was the first world’s fair at which mining was given a building of its own and placed on an...other industrial pursuits. In fact, the Mines and Mining Building Karen and Mark Vendl are geologists who |  | | Book (volume) | | first real Gold Rush in America occurred in Georgia following two simultaneous discoveries of Gold by Negro...Dahlonega in Lumpkin Co. Not only was placer and lode gold found in abundance here and elsewhere, but the early...found and are still being occasionally washed out of gold pans. Many other gem crystal species occur in pegmatite...Beryl, some Ruby-red Corundum, Spodumene and Topaz. Georgia has been actively prospected for gold since colonial...times, and the modern gold panner should concentrate his efforts in the known gold-bearing areas. Lode |  | | Report (issue) | | Mines in the Smiley Creek Area of the Vienna Mining District, Blaine and Camas Counties, Idaho Victoria...Mines in the Smiley Creek Area of the Vienna Mining District, Blaine and Camas Counties, Idaho Victoria...Mines in the Smiley Creek Area of the Vienna Mining District, Blaine and Camas Counties, Idaho. . . . ....Mines in the Smiley Creek Area of the Vienna Mining District, Blaine and Camas Counties, Idaho. . . . ..... . . . . . . . . . . . . . . . . . . 15 Vienna Mine.. . . . . . . . . . . . . . . . . . . . . . . . |  | | Report (issue) | | Seward Peninsula-Kobuk region ............ York district .................. Lost River area ................ Uranium possibilities of the York district . Nome district .................. . Uranium- possibilities...possibilities ........... Council district ................ Uranium possibilities- ........... Pairhaven and...' Kantlshna district ............. Nenana district .............. Valdez Creek district ........... Chulitna...Chulitna district ............. Yentna district .............. Iliamna Lake~Lake Clark area ........ |  | | Report (volume) | | most important were those in the Central City district, Colorado, from which about 300 tons of high-grade...the Silver Cliff mine, Wyoming; the Jesse D No. 1 and No. 2 claims, Utah; and the Merry Widow mine, New...New Mexico. Since World War II large uranium-bearing vein deposits have been discovered in the Western...mines, Washington; the W. Wilson mine, Montana; the White King mine, Oregon; the deposits in the Pryor...deposits in the Dripping Spring quartzite, Gila County, Ariz. According to Nininger (1954, p. 43), as |  | | Report (volume) | | and abridgment of the literature from 1858, when gold was discovered, through 1957 (with a few additions...location and means of access to all the metallic mining districts in the State, as well as a large number...varieties and subspecies are known. Some descriptions of new 1ninerals, or of mineral occurrences, have later...important source material from the earliest reports of gold discoveries in 1858, through 1958. Compilation and...next trip may lead to the discovery of a new mineral or a new crystal form. He can surely use the description |  | | Book (volume) | | Most specimen collecting is done in the Lead-Zinc mining dists. of northwestern Illinois, the glacial drift...600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mine⎯pyritized gastropods |  | | Book (volume) | | Most specimen collecting is done in the Lead-Zinc mining dists. of northwestern Illinois, the glacial drift...600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mine⎯pyritized gastropods |  | | Report (issue) | | ORIGIN OF CERTAIN RICH SILVER ORES NEAR CHLORIDE AND KINGMAN, ARIZONA. By EDSON S. BASTIN. INTRODUCTION...the silver mines and prospects of the Cerbat Mountains in 1913, in the course of a study of silver enrichment...by the United States Geological Survey in many mining camps of the western United States. The work of...determination of the extent to which the several silver minerals of the ore are secondary or primary and...Black Mountains, and Grand Wash Cliffs, Mohave County, Ariz.: U. S. Geol. Survey Bull. 397, 1909. 17 |  | | Report (volume) | | _____________________ Zinc-____________ ________ Gold and silver________ _____________ Changes in composition...depth__________ Precipitates from mine waters under superficial conditions_ Composition of mine waters of the Jopliu-region___________...Arizona__________________________ 208 Note on the Bisbee district, Arizona, by F. L. Ransome_ 209 Globe and Miami..._ 219 Santa Rita, New Mexico____________________ 22J Burro Mountain district, New Mexico_____________...Mexico_____________ 222 , Cananea, Mexico __________________ 224 Nacozari, Mexico. ____________________________ 225 Ajo |  | | Report (issue) | | SILVER ENRICHMENT IN THE SAN JUAN MOUNTAINS, COLORADO. By EDSON S. BASTIN. INTRODUCTION. The following...forms part of a topical study of the enrichment of silver ores begun by the writer under the auspices of...made in the study of a particular topic in one district would aid in the study of the same topic in the...specimens to the ores of many camps that had been rich silver producers but had not been studied geologically...regional report, it must be remembered that for each district only such information could be used as was readily |  | | Journal (article/letter/editorial) | | m'vadla Gold, Silver, and Copper Deposits and Their 11Iclllrrerals DAVID VON BARGEN N112 W18695 Mequon...important industry in the economy of Nevada, the Silver State, since territorial times (1861) and was the...area and created the state (1864). There are 526 mining districts in the state, 60 of which produce nonmetallic... Three major mining booms have occurred in Nevada: 1860-1880 (Comstock and other silver Downloaded by...of disseminated gold). The state regained its preeminent status in precious-metal mining with the development |
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