 | | Report (issue) | | Magnesioferritc Magnetite (Titaniferous magnetite) (Titano-magnetite) (Chromium-bearing magnetite) Alaghemite...lampaditc, limonite, lithiophoritc, magnesite, magnetite, malachite, martite, microclinc, nontronite, paragonite...lcverrieritc(?), .lithiophoritc^ locllingitc, magnesite, magnetite, manganocalcite, man- 10 Localities by County...ilmcnite, kaolinite, lithiophorite, magnesite, magnetite, malachite, metahalloysitc, monazite, olivine...specularite, spcssartinc, steatite, titaniferous magnetite, tourma line, tremolite, tremolite-actinolite |  | Chen, H., Clark, A. H., Kyser, T. K., Ullrich, T. D., Baxter, R., Chen, Y., Moody, T. C. (2010) Evolution of the Giant Marcona-Mina Justa Iron Oxide-Copper-Gold District, South-Central Peru. Economic Geology, 105 (1) 155-185 doi:10.2113/gsecongeo.105.1.155 | Journal (article/letter/editorial) | | Giant Marcona-Mina Justa Iron Oxide-Copper-Gold District, South-Central Peru HUAYONG CHEN,1,†,* ALAN H...grades (346.6 Mt @ 0.71% Cu). The emplacement of magnetite orebodies with uneconomic Cu grades (avg 0.12%)...generated, respectively, cummingtonite and phlogopite-magnetite assemblages through high-temperature Mg-Fe metasomatism...swarm of massive magnetite orebodies, in turn overprinted by subordinate magnetite-sulfide assemblages...assemblages. Magnetite and weak Cu and Zn sulfide mineralization coincided with a 156 to 162 Ma episode of andesitic |  | | Journal (article/letter/editorial) | | City zinc district, the Bumpass Cove iron-zinc-manganese district, the Sweetwater barite district, and the...deposits. The Ducktown copper district represents the most complex mining district and contains the largest...SW of Oak Ridge: maghemite (Monger 1986). Moore prospect, 4.5 miles SSE of Norris: calcite, chalcopyrite...mine) (Glenn 1925). Blount County Blockhouse prospect, 3-acre area 300 feet NW of Piney Grove Church...(D. Coskren, pers. comm.). Bradley County Brown prospect, on White Oak Mountain, 2 miles NW of McDonalds: |  | | Report (issue) | | 1921 and 1922 was devoted chiefly to the Wrangell district. A part of the results have already been published...understanding of the occurrence of ores in the district examined is by no means complete. Therefore, the...with the gold and silver deposits of the Hyder district and the copper and nickel ores of Chichagof and...Ketchikan district, and of the mainland from Port Houghton to Taku Inlet, in the Juneau district. From August...the description of the Cripple Creek prospect in the Hyder district, and other data. He is also under obligations |  | | Report (volume) | | are incomplete, but mines in the Mammoth mining district (fig. 1) may have produced as much as $1 million...adjacent to the old Mammoth Mine in the Mammoth district was in production during 1978. 1 2 MINARETS...Bliss prospect Crown Point-Nidever prospect Red Top Mountain prospects Minarets magnetite prospect Mark...Mark prospect Paved road Secondary road Trail )( Prospect Mammoth 'Jt mine Devils Postpile National...potential. • SUMMARY • 3 The Crown Point-Nidever prospect on Shadow Creek (fig. 1, No. 3) has about 9 million |  | | Report (issue) | | Road; turn onto soil road and preceed for 4.6 km. Prospect is 0.8 km southeast of house. Location WASH-1128...Village Road Cut (Route 302) Catherine Mountain Prospect 6. Branite Pegmatite Host H. G. Starret Columbite...195£. 1958. Source of information Knox County. Prospect is south Morrill and of Route 1; 0.8 km east of...of gravel pit 93 m to opening. Hancock County. Prospect is Emmor.s, 1910; located 0.8 km east of Fox Pond;...autunite Columbite, autunite Nate Perry Petallite Prospect Nevel Quarry 23. Autunite, columbite, uraninite |  | | Report (volume) | | platinum-group elements DESCRIPTION: Disseminated magnetite and chromite in dunite and small, discontinuous...of bornite, minor chalcopyrite, and secondary chalcocite, covellite, native copper, and magnetite. Sulfide...Silver, gold, copper, and zinc Kasaan Peninsula district Paleozoic copper-iron (molybdenum) skarn Produced...rocks DESCRIPTION: Contorted tabular masses of magnetite, chalcopyrite, and pyrite and gangue of calcite...with chalcopyrite, magnetite, and calcite. Skarns to south contain hornblende, magnetite, chalcopyrite, and |  | | Report (issue) | | Ore Deposits of the St. Lawrence County Magnetite District Northwest Adirondacks New York GEOLOGICAL... Ore Deposits of the St. Lawrence County Magnetite District Northwest Adirondacks New York By B. F. LEONARD...Development of magnetite ores (1830-1939)______ Recent discoveries and development of magnetite ores (194..._______ Rocks of the St. Lawrence County magnetite district. Metasedimentary rocks and migmatites____..._____..__ Occurrence of the magnetite deposits._____________ Position of magnetite deposits with respect to |  | | Thesis/Dissertation | | for facetgrade grossular garnet. His grossular prospect was. a failure but he did succeed in discovering...proportionately with decreasing altitude. Small pods of magnetite 33 Table 2. Mineral species of the skarris...Vesuvianite Laumonite ? Wad Limonite Unidentified Magnetite 34 are found at two places at the contact of...largely on the distributions of grossular and magnetite are simply shown on the distribution plots of...Hematite Barite Hemimorphite Bornite Limonite Calcite Magnetite Cerussite Malachite Chalcopyrite |  | | Book | | Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...assemblage of the vein-dike consists of ilmenite. magnetite, anatase, biotite, microcline and minor fluorapatite...well as good specimens of epidote, pyroxene, magnetite, titanite and other species. Equant, complex crystals...with crystals of corundum, rutile, zircon and magnetite. Russian scientists have made detailed studies...be found sporadically in old mine workings and prospect pits along the 50-krn length of the Ilmeny Mountains |  | | Journal (issue) | | Gary Grenier Ellis Wolfe HISTORICAL CONSULTANTS Martin Anne Robert T. Curran, Jr. Richard Hauck Roger...forging of i ro n . A l t h ough more than s i x ty magnetite mi nes were worked in the Highlands, few produced...mjne, for exa mple, was a sou rce o f superb magnetite crystals, as was the Forest or Dean mine (B eck...eck, 1 842 ) . B u t there was one magnetite mine whose name is fam iliar to m i n eral collectors everywhere:...Highlands ( Isachsen et al, 1 99 1 ) . Nu merous magnetite ore bodies, of which the Tilly Foster is perhaps |  | Brew, David A., Johnson, B.R., Grybeck, Donald, Griscom, Andrew, Barnes, D.F., Kimball, A.L., Still, J.C., Rataj, J.I. (1978) Mineral resources of the Glacier Bay National Monument Wilderness Study Area, Alaska. Open-File Report Vol. 1978 (78-494) US Geological Survey doi:10.3133/ofr78494 | Report (issue) | | Astrolabe-De Langle stock De Langle'Mountain magnetite prospectOther mineralization in vicinity Remainder...Glacier deposit vicinity C-161 Tarr Inlet knob prospect and vicinity C-162 North side of Johns Hopkins...Chief (Joe's Dream) prospect C-222 Rambler (Challenger) prospect C-230 Galena prospect C-233 Sunrise...Sunrise prospect C-233 A. F. Parker prospect C-234 Hop along prospect C-236 Whirlaway prospect C-237...Mt. Parker area C-: 237 Russell Island gold prospect C-238 Ptarmigan Creek basin C on c lus ion Remainder |  | Gualtieri, James Louis, Thurber, H.K., Miller, Michael S., McMahan, Areal B., Federspiel, Frank F. (1975) Mineral resources of additions to the Alpine Lakes study area, Chelan, King, and Kittitas Counties, Washington. Open-File Report Vol. 1975 (75-3) US Geological Survey doi:10.3133/ofr753 | Report (issue) | | Upper West Fork Miller River-Bear Creek area Napco prospect Bear Creek prospects Cleopatra mine Aces Up mine...Lower Mineral Creek area Durrwachter prospect Copper Queen prospect Lower West Fork Miller River area Akishin...Coney Basin mine Lower Cleopatra prospect Black Dike prospect Lynn prospect Miscellaneous prospects Money...Creek area Damon mine Apex mine Great Republic prospect Goat Creek shear zone Miscellaneous prospects...Huckleberry Mountain area White Cat prospect Hughes-Wayman prospect Copper Queen claims Miscellaneous prospects |  | | Report (issue) | | Feather River Roadless Areas, 89 California, by Martin L. Sorensen and Alan R. Buehler . . . . Benton...Chips Creek Roadless Areas, California, by 101 Martin L. Sorensen and J. Mitchell Linne .. _. . . . ...Jacinto Wilderness, California, by Brett F. Cox and Martin D. Conyac . . . . ........... .. .. . San Joaquin...Roadless Area, Montana, by Richard E . Van Loenen and Martin C. Conyac . . . . . . . . . . . . . . . . . . ...Creek Roadless Areas, Oregon, by James G. Evans and Martin D. Conyac Kalmiopsis Wilderness, Oregon, by orman |  | | Journal (issue) | | fumaroles or openings and outlets in a volcanic district. As the first visitors at this California Hecla...Company, San Francisco, Cal ifornia. BACON, C. F ., AM IMOTO, P. Y ., SHERBURNE, R. W ., and SLOSSON, J...(1946) Quicksilver deposits of the western Mayacmas district, Sonoma County, California. California Journal...meter pit. Here it is common to find Powellite C aM 0 4 masses of bright garnet disseminated through...er, 1993 who apparently did little more than prospect for new occurrences on the west end of Lot 52 |  | | Report (volume) | | S. Banko, District Ranger, both of the Wenatchee National Forest. James M. Dolan, District Ranger, North...materially aided field parties in work in his district. Thanks are due the personnel of the Leavenworth...zones of the area was furnished by Zoeb Mogri, District Geologist, and Gary Schell, Geologist, Cities...enstatite with minor clinopyroxene and chrome magnetite. The other 10-20 percent of the rock is composed...chlorite are present. Accessory minerals include magnetite, ilmenite, sphene, leucoxene, prehnite, and carbonate |  | | Report (issue) | | I°x2° quadrangle and ore deposits of the Atlanta district, Idaho .................... Snee, L.W. , and Kunk...Geology and mineral deposits of the Vienna mining district, Blaine and Camas Counties, Idaho .... 1 3 17...Group in the Vienna district, and the Bunker Hill mine in the Mineral Hill district. Tungsten veins (15A...(15A, fig. 2): Examples are the Big Falls Creek prospect and the Corral Creek Tungsten deposit. Greisen...Mountain prospect in the Alta district and the Rinebold prospect in the Roaring River district. Copper |  | | Report (issue) | | example, hypersthene-quartz, biotite-quartz, garnet-magnetite sym plectite. There appear to be two generations...D Granite -undlfferenliated ,--:;-'aM Burro-burro Gfoups (vofcani cs ( 'P ' ... 46 Ktl...of disseminated magnetite which gives the rock its colour and magnetism. The magnetite occurs both as...Bedding is defined by slight variations in the magnetite content and is picked out on weathered surfaces...containing some iron oxide which has been converted to magnetite. Other erratically distributed minor impurities |  | | Journal (issue) | | known as the Big Island. One site is in the Puna District located on the windward side of the island near...chief city, Hilo, and the other is in the Kohala District on the leeward side. The most significant new...is located on the dry or leeward side. The Puna District has the advantage of close proximity to Hilo,...major port and largest business center. The Puna District also has the advantage of having considerable...structures only marginally efficient. The South Kohala District includes the commercial port of Kawaihae. While |
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