 | | Report (volume) | | Director Bulletin 947-G COPPER DEPOSITS OF THE KOTSINA-KUSKULANA DISTRICT ALASKA BY RALPH E. VAN ALSTINE... Price 15 cents CONTENTS Page Introduction, Copper deposits of the Chitina Valley, by Fred H. Moffit__...geology.__________.i__________________________ Copper Creek.____________________________________________________..._.._ 124 Copper prospects._____________________________________________ Ammann prospect.__________...___________ Peacock prospect-_________________________________________ Mountain Sheep prospect______ |  | | Report (issue) | | CASSITERITE IN SAN DIEGO COUNTY, CALIFORNIA. By WALDEMAR T. SCHALLER. A small handful of cassiterite...crystals was found in the northern part of San Diego County, Cal. (fig. 22), in the spring of 1915, and the...showing position of cassiterite locality in San Diego County, Cal. The rectangle indicates the gem tourmaline...tin ore in place previously known in San Diego County. These are as follows: F. J. H. Merrill 1 has stated...black sand of the mountain gulches, chiefly from the east slope of Laguna Mountain, in the southern part |  | | Report (issue) | | published information, field investigations, and mining company data. 2 ABBREVIATIONS USED IN THIS REPORT...billion percent short ton U.S. dollar gold silver copper lead zinc cobalt manganese iron uranium oxide phosphorous...resources Mining districts Gibbonsville Mining District Indian Creek Mining District Mineral Hill Mining District...Mackinaw Mining District Blackbird Mining District Wilson Creek Mining District Yellowjacket Mining District...Range Mining District Eureka Mining District Carmen Creek Mining District Eldorado Mining District Pratt |  | Price, J. B., Hitzman, M. W., Nelson, E. P., Humphrey, J. D., Johnson, C. A. (2014) Wall-Rock Alteration, Structural Control, and Stable Isotope Systematics of the High-Grade Copper Orebodies of the Kennecott District, Alaska. Economic Geology, 109 (3) 581-620 doi:10.2113/econgeo.109.3.581 | Journal (article/letter/editorial) | | Systematics of the High-Grade Copper Orebodies of the Kennecott District, Alaska Jason B. Price,†,1,*...Geology and Geological Engineering, Colorado School of Mines, Golden, Colorado 80401 2 U.S. Geological Survey...Denver, Colorado 80225 Abstract The Kennecott district, Alaska, contained three important copper-(silver)... the Kennecott Copper Corporation recovered some 1.18 billion pounds (Blbs) of copper and around 9 million...located 20 to 40 m above the contact with the native copper-bearing Triassic (Ladinian) Nikolai Greenstone |  | | Report (volume) | | BUREAU OF MINES With a section on the THUNDER MOUNTAIN DISTRICT By B. F. LEONARD, U.S. GEOLOGICAL SURVEY,...______________________ Salmon River district ____________________________ Chamberlain district _____________________________...Edwardsburg district _____________________________ Ramey Ridge district ____________________________ Big Creek...Creek district ______________________________ Middle Fork district _____________________________ Monumental...Monumental Creek district _________________________ Marble Creek district ____________________________ Crags |  | | Report (volume) | | --. ---- - --- - .A reconnaissance in the Kofa Mountain , Ariz., by E. L. Jon , jr. (pub] ished Oct. 26...reconnaissance of the Cottonwood -American Fork mining region, tab, by B.S. Butler and G. F. Loughlin...Preliminary report on t.he economic geology of Gilpin County, Colo., by E. S. Bastin and J. M. llill (publish..._·- ______ 59 111 PoTA H: Potash in certain copper and gold ores, compiled by B. S. Butler (published..._____ .. __ . _.. ____. ___ a iterite in San Diego County, Cal., by W. T . chall er (published J an. 15, |
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