 | | Report (volume) | | Lincoln and Sanders Counties, Montana, and Bonner County, Idaho By U.S. GEOLOGICAL SURVEY and U.S. BUREAU...Lincoln and Sanders Counties, Montana, and Bonner County, Idaho By ROBERT L. EARHART, U.S. Geological Survey...Lincoln and Sanders Counties, Montana, and Bonner County, Idaho By M. DEAN KLEINKOPF and DOLORES M. WILSON...Lincoln and Sanders Counties, Montana, and Bonner County, Idaho By DAVID J. GRIMES and ROBERT L. EARHART...Lincoln and Sanders Counties, Montana, and Bonner County, Idaho By NICHOLAS T. ZILKA, U.S. Bureau of Mines |  | | Report (issue) | | Oregon and from out-of-state-for such information on mining properties has shown the present need for such...reasonable time information that is of value to the mining industry, that it is deemed best to issue this...alphabetical name and location list of all mines in the district, a general introductory statement covering the...geology of the state, an index map showing the mining divisions of the state as covered by the several...Statement Baker County 13 ____ 13 _ _______________ Baker Area Cable Cove District Connor Creek Area |  | | Report (volume) | | A reconnaissance of the Cottonwood -American Fork mining region, tab, by B.S. Butler and G. F. Loughlin...________ Notes on the fine gold of nake River, Idaho, by J . . L Hill (publi hed Dec. 21, 1915) . . ...Preliminary report on t.he economic geology of Gilpin County, Colo., by E. S. Bastin and J. M. llill (publish...227 237 CELLA. EOU,S: itrate dcpo i in southern Idaho and eastern Oregon, by G. R. Mansfield (published..._____ .. __ . _.. ____. ___ a iterite in San Diego County, Cal., by W. T . chall er (published J an. 15, |  | | Report (issue) | | Metallurgist MARK EHLE, Mining Engineer J. B. TENNEY, Geologist G. R. FANSETT, Mining Engineer R. E. S. HEINEMAN..."The Geology and Mineral Deposits of Southern Yuma County" is the most pretentious bulletin of the kind that...in many parts of the county, it has not been easy to prospect southern Yuma County at all thoroughly, but...__________ . __ .____ _____ ______ __. General mining history_______________________ __________ ._______________...46 46 46 47 47 48 PART H.-MOUNTAIN RANGES AND MINING DISTRICTS .............. CHAPTER L-TRIGO MOUNTAINS |  | | Book | | Nickel. β The principal ore of nickel is pyrrhotite, ORES OF METALS 7 composed essentially and...reappreciable quantity of nickel. gion, Ontario, the pyrrhotite is mixed with small quantities of pentlandite...Glacial deposits, also the and so on. Era or Group Cenozoic Mesozoic or Secondary Period or System...the rare and very valuable metals of the platinum group. The order after that is roughly the order of importance...quantities of copper pyrites, zinc blende, galena, pyrrhotite, magnetite, mispickel, rides, molybdenite, |
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