 | | Report (volume) | | DIRECTOR BuiiIiETIN 574 MINING DISTRICTS OF THE DILLON QUADRANGLE, MONTANA AND ADJACENT AREAS BY ALEXANDER................................................. Mining districts...................................................................................... Mining development. ...................... .. - - ' -..................................... 18 Placer mining....... ~................................................................ 20 Present status of mining .....:........................................ |  | | Report (issue) | | ________________ Sequence of formations ______________ Madison limestone. _ ________________ Relation to Jefferson...69 69 69 69 69 70 70 70 70 70 70 71 History of mining, by V. C. Heikes.__________________ The first prospectors...Cotton wood area. _________ Regulations governing mining locations____________ Early shipments and experiments...Electric power________________________________ Mining-_______________________________________ Milling...____ Big Cottonwood district.________________________ Little Cottonwood district.______________________ |  | | Report (issue) | | INTRODUCTION. reports are those on the Mercur district, by J. E. Spurr and S. F. Emmons; the Bingham...Bingham The senior author, J3. S. Butler, began district, by J. M. Boutwell, Arthur Keith, and field work on...deposits of Utah in the S. F. Emmons; the Park City district, by J. M. FIELD .WORK AND AUTHORSHIP. summer...author, G. F. Loughlin, began work in the Tintic district in 1911 in collaboration with Waldemar Lindgren...the Leamington district, and of districts in theW asatch Range. Several of the mining districts of the |  | | Journal (volume) | | Resumption of Activities at the Howell Mine BY WILL C. HIGGINS The Howell Mining Company, of Salt Lake City, is...property in the South Fork The property of the Howell Mining Com of Big Cottonwood canyon, about twentyfive...the great Cardiff mine, its near to the discovery of the property of the Howell Mining Company, of the...-roots. The discovery of the Howell reads al district has been not most like a romance . ed for its...ment and operation , the richest portion of and mining activities were inaugurated in Utah the Big a |  | Doe, B. R., Steven, T. A., Delevaux, M. H., Stacey, J. S., Lipman, P. W., Fisher, F. S. (1979) Genesis of ore deposits in the San Juan volcanic field, southwestern Colorado; lead isotope evidence. Economic Geology, 74 (1) 1-26 doi:10.2113/gsecongeo.74.1.1 | Journal (article/letter/editorial) | | Some other deposits (Summitville, Jasper, Red Mountain district) have values of 2ø•Pb/•ø4Pbsimilar to those...have lead isotopiccompositions that are portant mining districts. Studies of lead in the as- more radiogenicthan...applied specificallyto the ores in the Creede district by Bethke et al. (1973) and by Stevenand Eaton...Eaton (1975) and to ores of the Eureka district by Casadevalland Ohmoto (1977). Interaction between lneteoric...to 1976 none had been proven economic. The many mining calnpsof the San Juan Mountains have producedabouta |  | | Book (volume) | | Sweetgrass Hills in the distance, lying within Montana, U.S.A., is a laccolith of syenite yielding a K-Ar...Saskatchewan and Manitoba in the neighbouring states of Montana and North Dakota. The eastern boundary of Interior...Platform is marked by Sweetgrass Arch extending from Montana into Alberta. The term Alberta Basin is used informally...which is drawn across the top of Hudson Bay along Bell Arch; the related Foxe Basin to the northeast is...corner of British Columbia, and much of the western District of Mackenzie, Northwest Territories. In the southern |
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