 | | Report (issue) | | Deposits of the Jefferson City QuadranglJefferson and Lewis and Clark Counties, Montana By GEORGE E....1922Geology and mineral deposits of the Jefferson City quadrangl~, ·Jefferson and Lewis and Clark Counties, Montarra...deposits of the Jefferson City quadrangle, J e:fferson and Lewis and Cl ark Counties, Montana. 1963. (Card...2) 1 1. 'Geology-Montana-.Jefferson City quadrangle. 2. Ore-depositsMontana-Jefferson C:ity quadrangle...quadrangle. 3. Mines and mineral resources-Montana-Jefferson City quadrangle. I. Pinckney, Darrell Mayne, 1925- |  | | Report (issue) | | PRELIMINARY REPORT ON THE COMET AREA JEFFERSON COUNTY MONTANA UNITED STATES DEPARTMENT OF THE INTERIOR...PRELIMINARY REPORT ON THE COMET AREA JEFFERSON COUNTY, MONTANA By George E. Becraft This report concerns... PRELIMINARY REPORT ON THE COMET AREA JEFFERSON COUNTY, MONTANA By George E. Becraft CONTENTS Page Page.......... Prebatholith volcanic rocks........... Quartz monzonite................... Alaskite ............. Comet mine ....................... Gray Eagle mine ................... Silver Hill mine.......... |  | | Report (volume) | | BULLETIN 527 ORE DEPOSITS OF THE HELENA MINING REGION MONTANA BY ADOLPH KNOPF WASHINGTON GOVERNMENT............................ Historical sketch of mining..................................................andesites ....................................... Quartz monzonite.......................................................................... Marysville district.......................................................... Drumlummon mine........................................... Cruse mine.......:............. |  | | Report (issue) | | SURVEY VEINS IN THE NORTHERN PART OF THE BOULDER BATHOLITH, MONTANA by Darrell M. Pinckney U. S. Geological................... 11 \ , Rocks of the Boulder batholith ............. 12 mature of vein exposures...Mineral assemblages .....'......»..... ». 25 Quartz-tourmaline asse iblage ,v ............. 1 Pyrite-quarti...Arsenopyrite-quartz assemblage ........« . 31 ......... 32 .................*. 3$ Quartz-pyrite-chalcopyrite...reins containing the quartz-pyritechalcopyrite assenblage .........»... Quartz veins ............. |  | | Book (edition) | | gem stones mon dull are as hard or harder than quartz, a com- mineral everywhere present as dust which...Hardness Scale 6. Orthoclase 1. Talc 2. Gypsum 7. Quartz Topaz Corundum 10. Diamond 3. Colcite 8. 4...Your will scratch orthoclase feldspar but not quartz. In making hardness appears to be a scratch paper...the general arrange- ment of these surfaces. Quartz and amethyst, for example, are frequently crystallized...SPODUMENE DANBURITE DATOLITE GARNET FLUORITE QUARTZ CRYSTALS SPINEL STAUROLITE •^^ VESUVIANITE |  | | Journal (article/letter/editorial) | | accepted abstracts follow. THE GARNET LINE IN OXFORD COUNTY, MAINE, PEGMATITES. M. M. Felch, W. B. Simmons...intermediate and core zones in many of the Oxford County, Maine, pegmatites. This study primarily focuses...centuries. The garnet line plays an important role in mining these two localities, as it is a zonation indicator...garnet lines host a range of primary inclusions: quartz, mica, tourmaline, zircon, as well as xeno368 ...and neighboring mineral phases (e.g., albite and quartz). A similar occurrence of tourmaline-rimmed garnet |  | | Report (volume) | | Director Bulletin 842 OF THE GREATER HELENA MINING REGION MONTANA BY J. T. PARDEE and F. C. SCHRADER UNITED...___-_____________-_-_--___-_-__---_-_.--_____ Granite (quartz monzonite)____.__-_______--__-_-______ Rhyolite...______________________-__-_________--_------___-_ Ophir district.________________________________________________...__________---__--_-___ Austin district._.____..._..._._.____._____.____.___-.___._____ Marysville district.___________...___________________________________________ Gould district._______________________________________________ Stemple |  | | Report (volume) | | it helpful to refer to Survey Bulletin 507, "The mining districts of the western United States," and to...exhausted by mining or quarrying. Deposits of minerals of wide distribution, such as quartz and calcite...because they occur in sufficient quantity to warrant mining for their usual products but because they furnish...Palo Alto. Colorado.........Prof. R. D. George, Boulder. Connecticut..... .Prof. William N. Rice, Middletown...Prof. E. B. Mathews, Johns Hopkins University, Baltimore. Michigan..........Mr. R. A. Smith, Lansing. Dr |  | | Report (issue) | | ASSESSMENT OF THE HELENA NATIONAL FOREST, WEST-CENTRAL MONTANA Edited by R.G. Tysdal 1 , Steve Ludington2 , and...ASSESSMENT OF THE HELENA NATIONAL FOREST, WEST-CENTRAL MONTANA U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 96-683-A...in west-central Montana. It lies in the vicinity of Helena, the capitol city of Montana, and includes Federal...lands within parts of five counties: Broadwater, Jefferson, Meagher, Powell, and Lewis and Clark. * Gold...was discovered in the region in Powell County in 1852. Mining began in the 1860's, and since then the |  | | Book (volume) | | gold-bearing areas. Lode deposits usually consist of Quartz veins in solid rock, while placer deposits occur...Dahlonega Co. and Rabum Co., and the McDuffie County Belt extending through portions of McDuffie, Warren...Sphalerite. BALDWIN COUNTY MILLEDGEVILLE, at state farmjasper. BANKS COUNTY COMMERCE, along Hwy. 59...Co. linerock crystal. BARROW COUNTY WINDER, along rd. to Jefferson and 1½ mi. inside the Co. line in...Guide for Rock Hounds in the United States BARTOW COUNTY AREA, Saltpeter Cave, as floatjasper. CARTERSVILLE: |  | | Report (volume) | | ....................................... 102 District of Columbia ......................................... 139 144 146 153 158 163 169 . 172 174 Montana..................................................to refer to Geological Survey Bulletin 507, "The mining districts of the western United States," and to...exhausted by mining or quarrying. Deposits of minerals that are widely distributed, such as quartz and calcite...because they occur in sufficient quantity to warrant mining for their usual products, but because they furnish |  | | Report (volume) | | mines_______________________________________ Boulder CountY----------------------------------~-----------Jamestown...Generalfeatures--------------------------------------Blue Jay mine, by R. U. King__________________________ Fair Day...mine________________________________________ Nations Treasure mine, by R. U. King___________________ Victory group...IV Description of principal mines-Continued Boulder County-Continued Other areas __________________________...___________ Shirley mine _____________ ----- __ ------------__________ Sisk mine, by F. B. Moore____ |  | | Report (issue) | | Silurian quartz monzonite, and the post-Lower Devonian granodiorite, Attean quadrangle, Somerset County, Maine:...andKruger, C. L. Aeromagnetic map of northeastern Iron County, Michigan: 1 sheet, scale 1:31,680. Aug. 27, 1965...L., Aeromagnetic map of part of eastern Baraga County, Michigan: 1 sheet, scale 1:62,500. June 11, 1965...geologic map of Bradley Peak quadrangle, Carbon County, Wyoming: 1 sheet, scale 1:20,000. May 17, 1965...RedBuffalo Route of Interstate Highway 70, Summit County, Colorado: 10 p., 1 fig. Jan. 29, 1965. (Wa, Da |  | | Report (issue) | | known. For simplification by AGI the Sections on County Index and Rock Unit Index were merged into a broader...bibliography can be searched by location, i.e. the county or by the subject material or the rock unit name...GEOLOGY SERIALS LIST AAAS Selected Symposia Series. Boulder, CO: Westview Press for the American Association...with Programs - Geological Society of America. Boulder, CO: Geological Society of America. ISSN: 00167592...Uranium Seminar. New York, NY: American L1stitute of Mining, Metallurgical, and Petroleum Engineers, L1c.ISSN: |  | | Journal (article/letter/editorial) | | North America; the rare earth pegmatitesb of Llano County (Texas), Minas Geraes(BraziI), Ytterby (Sweden)...pp. 11-13, 1933 8 Bastin, Edson S., Feldspar and quartz deposits of southeastern New York: U. S. Geol.Straey...1lBoth tin and tungsten minerals occur in pegmatitic quartz veins accompanying the Paleozoic granites of western...2, pp. 104-105, 1907. la Reid, A. Mclntosh, The mining fields of Morina, Mt. Claude, and Lorinna: Tasmania...pp. 300-311. t6 Dolmage, Victor, Finlay River district, British Columbia:' Canad'ian l[i'n. TH E AM |  | | Book (edition) | | YEAR 1687"—DAVID T. DAY, CHIEF OF THE DIVISION OF MINING STATISTICS AND TECHNOLOGY WASHINGTON GOVERNMENT...and consump tion, or better and cheaper means of mining, extraction, and convey ance to market, may in...correspondence has been carried on with geologists, mining engineers, and other local authorities, and various...mmed at Broken Arrow aud Trout creek, in Sc. Clair county. The strata in this field are more faulted und...prong of Canoe creek, in St. Clair county, to Ha\sop creek, in Bibb county, a distance of 60 miles. Down to |  | | Report (issue) | | grouped as a uni• \ Quartz monzonite Dominantly mediurn-g rained b1otite hornblende quartz monzoni1e; Jo,·at...shown at this scale are included in 9m. T6N Pre-batholith volranics Light to dark gray aphanitic andesihc...longitudinal section, and cross section of the Comet Mine adapted from company maps mode by Blair W. Stewart...,. Comet Gray Eagle Silver Hill Baltimore Free Enterprise Boulder Mercury Australian Bismar k Cleveland...Hope-Bullion Morning Glory High Ore {Montana Consolidatt!d) East Mint Boulder Chief Ella 12' 30 .. , Preliminary |  | | Report (volume) | | Geophysical Union.. Transactions, American Institute of Mining and Metallurgical Engineers _..._ American Journal...Colorado Mining Association publications . Economic Geology. _ . _ ___... Engineering and Mining Journal...of Sedimentary Petrology_...__._ Mines Magazine Mining Engineering ........___..._...._____ Advances in...Tallahassee, Fla. GA Georgia Department of Mines, Mining and Geology, 425 State Capitol, Atlanta, Ga. IM...Minneapolis, Minn. MOB Office of the Director, Montana Bureau of Mines and Geology, Butte, Mont. NEV Office |  | | Report (issue) | | Connecticut New Haven, Yale University Library District of Columbia · Washington, Library of Congress...information immediately available to property owners and mine operators concerned with exploration for and productiqn...Waldemere, Geology of the Ruin Basin area, Gila County, Ariz.: 134 pp., 36 pls., 1 fig. May 7, 1951. Geology...Washington 25, D. C. Brokaw, A. L., Green Monster mine, Clark County, Nevada: 9 pp., 7 pls. Oct. 4, 1951. U. S...Byers, F. M. , Tungsten deposits in the Fairbanks district, Alaska: 68 pp., 9 figs. Sept. 20, 1951. U. S |  | | Report (volume) | | nos. 1-8. Boston, Mass. American Institute of Mining Engineers: Bulletin, nos. 109-120; Transactions...Mineralogist, vol. 1. Philadelphia, Pa. American Mining Congress: Report of Proceedings, 18th Annual Session...nos. 1-7. San Francisco, Cal. California State Mining Bureau: Bulletin, no. 71. San Francisco, Cal. California...Summary report for 1915. Ottawa, Ont. Canadian Mining Institute: Monthly Bulletin, nos. 45-56; Transactions...Transactions, vol. 18. Ottawa, Ont. Canadian Mining Journal, vol. 37. Toronto and Montreal, Canada. Canadian |  | | Report (issue) | | 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...ee County ----------------------------R[aricopa County ----------------------------R[ohave County -- |  | | Journal (article/letter/editorial) | | ......................................... 401 District of Columbia................................................................. 407 Maryland and District of Columbia.............................................................................. 410 Montana............................................................................................ 463 Mining operations.......................................Photographed by H. F. Reid, Johns Hopkins University, Baltimore, Maryland, 1890 Negatives in Professor Reid’s |  | | Journal (article/letter/editorial) | | and genetic relations of these rocks and the Baltimore Gabbro, and (3) on correlation of the Wissahickon...Maryland Piedmont and indicates that Hopson's Baltimore Gabbro is younger, not older, than the older group...Piedmont, the Precambrian basement complex known as Baltimore Gneiss is unconformably overlain by a thick sequence...interpretations of the relations between the Baltimore Gabbro (as used by Hopson, 1964), the granitic...granitic rocks and their relations to Hopson's Baltimore Gabbro and the Glenarm Series, of the radiometric |  | | Book | | On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN...AJO Famous mineral localities: the New Cornelia mine, Ajo, Arizona (by W. J. Thomas & R. B. Gibbs) 14:283-298...Iron-manganese phosphates of the Williams pegmatites, Coosa County, Alabama (by P. B. Leavens & T. A. Simpson) 6:66-73...ALICE GLORY HOLE The Alice glory hole, Clear Creek County, Colorado (by T. A. Hanson & W. B. Craft) 18:185187 |  | | Report (issue) | | of the eastern half of the lone quadrangle, Nye County, Nevada. [Menlo Park, CA] : U.S. Geological Survey...of the Zwagg Island Wilderness Study Area, Currv County, Oregon. [Menlo Park, Calif.] : U.S. Geological...only Dean, Lewis S. Mineral resources of Clay County, Alabama. Geological Survey of Alabama, 1988. M(235)4...quadrangle, Carroll and Frederick Counties, Maryland. [Baltimore] : State of Maryland, Department of National Resources...Higgins, Michael W. Geologic map of Cecil County. [Baltimore] : State of Maryland, Department of National |
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