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| Bedded Iron Deposits of the Southwestern Ruby Range, Montana , , 'A " U,S. GEOLOGICAL SURVEY PROFESSIONAL...Bedded Iron Deposits of the Southwestern Ruby Range, Montana By HAROLD L. JAMES With a section on THE...THE KELLY IRON DEPOSIT OF THE NORTHEASTERN RUBY RANGE U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1495...and mineral deposits of the southwestern Ruby Range, Montana UNITED STATES GOVERNMENT PRINTING OFFICE...bedded iron deposits of the southwestern Ruby Range, Montana. (U.S. Geological Survey professional paper |
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| the Kelly and Carter Creek areasof the Ruby Range,southwestern Mineral assemblages Montana, indicate o...consensuspeak temperature estimateof 745+50"C. For the Carter Creek area, garnet-clinopyroxene,garnethornblende...chemicalspeciesbetweenminerals or (2) recrystallizationof quartz, magnetite,and carbonates (r'.e.,the non-refractory...ind mineral assemblagesin two areas within the Ruby Range, southwesternMontana. These two areas,designatedin...designatedin Figure I as the Kelly and Carter Creek areas,are particularly well-suited to the proposedstudy |
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| somemetamorphic Precambrian iron-formations in southwestern Montana INon P. Itr.fir,Igce eNo CoRtrlgt-IsKLEIN, JR....iron-formations from the Tobacco Root and Ruby Mountains and the Gravelly Range of southwesternMontana were studied...associatedwith the iron-formation in the Ruby Creek area of the Gravelly Range are of chlorite grade. The high...high-gradeiron-formation assemblages are mainly of the type quartz + magnetite + hematite * one or two pyroxenes +...feldspar. Similar assemblages from the Carter Creek area of the Ruby Mountains are relatively amphibole-rich |
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| Virginia City mining district), Madison and Beaverhead Counties, southwest Montana: Mineral-resource and mineral-environmental...mining district Blacktail mining district Cherry Creek mining district Chinatown mining district Horse...Red Bluff mining district Revenue mining district Ruby Mountains mining district Sheridan mining district...Resource Area. Figure 2. Mineral localities in Madison and Beaverhead Counties plotted by mining district...McDonough, 1989). A. Copper Mountain and Carter Creek deposits. B. Ruby (Johnny Gulch Iron) and Black Butte |
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| metamorphic lithologies from two small areas in the Ruby Range, southwesternMontana, has been studied by electron...Saxena(1979) yield anomalously high timperatures for the Ruby Range. If this result is observedin other upperamphibolite...pairs in natural assemblages from the Ruby Range, southwestern Montana (Fig. l). Potentially the most useful...considerations in mind, two small areas in the Ruby Range were chosen for study. These areas, designated...designated in Figure I as the Kelly and Carter Creek areas, ate I km2 and 9 km', respectively. Coexisting garnets |
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| Deposits of the Tobacco Root Mountains, Southwestern Montana GEOLOGICAL SURVEY PROFESSIONAL PAPER 1187...Deposits of the Tobacco Root Mountains, Southwestern Montana By HAROLD L. JAMES GEOLOGICAL SURVEY PROFESSIONAL...deposits of the Tobacco Root Mountains, southwestern Montana. (Geological Survey professional paper ; 1187)...Supt. of Docs. no.: I 19.16:1187 1. Iron ores--Montana--Tobacco Root Mountains. 2. Geology, stratigraphic-Pre-Cambrian...__________________________________ 12 Carmichael Creek (2) ____________________________________ 13 Boulder |
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| cores of many northern Rocky Mountain uplifts in Montana, Wyoming, and South Dakota, and in the southwesternstates...iron-formation stratigraphy,however, differ greatly from one range to another; it is likely that each area of iron-formation...contemporaneous sediments. The iron-formations range in thicknessfrom about 100 feet to more than 2,000...content of unoxidized rock typically is in the range of 25 to 35 percent. Beds of iron-formation as much...Magnetite and quartz are the dominantconstituents. Lithologic associations vary widely: in the Ruby Mountains |
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| Association: Magnetite, hematite, ferroan diopside, quartz, almandine. Distribution: From Bauchi, Nigeria...South Africa. In the USA, in Montana, around Copper Mountain and Carmichael Creek, in the Tobacco Root...the Ruby Creek area, in the Gravelly Range, Madison Co.; also the Carter Creek area, in the Ruby Mountains...Mountains, Beaverhead and Madison Cos.; and in Utah, at Hanksville, Wayne Co. On Arcedeckne Island, District |
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| /Reconnaissance of . Parts of Beaverhead 4 and Madison Counties Montana GEOLOGICAL SURVEY BULLETIN 969-C A...RECONNAISSANCE OF PARTS OF BEAVERHEAD AND MADISON COUNTIES, MONTANA BY M. R. Klepper ABSTRACT This report...miles in parts of Beaverheacl and Madison Counties, southwestern Montana. The area lies between parallels...of the Snowcrest Range, the southern part of the Ruby Range, the upper part of Ruby River Valley, and...Cherry Creek group and in part to the Pony series of Tansley, underlie the southern part of the Ruby Range |
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| Assessment of the Dillon 1 ox 2° Quadrangle, Idaho and Montana AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL...of the Dillon 1 o x 2° Quadrangle, Idaho and Montana By ROBERT C. PEARSON, CHARLES M. TRAUTWEIN, EDWARD...assessment of the Dillon 1Montana I by Robert C. Pearson ... [et al.]. p. em.- (U...Assessment of the Dillon 1o x 2° Quadrangle, Idaho and Montana By Robert C. Pearson, Charles M. Trautwein, Edward...ABSTRACT The Dillon 1"x2° quadrangle in southwestern Montana and east-central Idaho was investigated as part |
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| Cretaceous Stratigraphy and Paleontology, Western Montana U.S. GEOLOGICAL SURVEY BULLETIN 1962 AVAILABILITY...Cretaceous Stratigraphy and Paleontology, Western Montana A. Redefinition of Frontier FormationBeaverhead...FormationBeaverhead Group Contact, Lima Peaks Area, Southwestern Montana and Southeastern Idaho By T.S. DYMAN, J.C ..HALEY...National Park, and the Madison Range and Livingston Area of Southwestern Montana By R.G. TYSDAL and D.J...Cretaceous) Belemnite Actinocamax in Central Western Montana By WILLIAM A. COBBAN This volume is published |
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| with 49 natural high-Mn granulites from Ruby Range, Montana, USA, and Karnataka, India, yields the P–T...content of the co-existing clinopyroxene in the range XCpx=0–0.51. Comparisons between the new and former...their application to the Mn-rich samples from Ruby Range (Dahl, 1980) still show a regular decrease in...Data from Mn-rich natural assemblages Ruby Range, Montana, USA Dahl (1980) presented data for 10 garnet–clinopyroxene...from Kelly and three from Carter Creek, both in the Ruby Range, Montana, USA. Variations of garnet compositions |
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| Petrogenesisand Timing of Talc Formation in the Ruby Range, SouthwesternMontana DALE L. ANDERSON,*DAVID...Abstract Talc depositsin the RubyRange,southwestern Montana,haveformedin Archeandolomitic marblesthat were...sixtalc prospectsin the RubyRange,southwestern Montana,havebeenstudied in detail to developa modelfor...TobaccoRootMountains, Highland Mountains, Gravelly Range, and GreenhornRangeacrosssouthwesternMontana (Fig...(Fig. 1; Berg, 1979; and referencestherein). In the Ruby Rangetwo talc minesare currentlyin production:the |
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| 574 MINING DISTRICTS OF THE DILLON QUADRANGLE, MONTANA AND ADJACENT AREAS BY ALEXANDER N. WINCHELL .......................................... Cherry Creek group........................................................................................... Quartz monzonite................................................................................... 40 Quartz monzonite porphyry............................................................................. Quartz monzonite aplite- -........................... |
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| PEGMATITES OF E. WM. MONTANA. • HEINRICH. CONTENTS. PAGE Abstract .......................................................................... Montana pegmatite................................................................................ Stone Creek pegmatite................................................. Horse Creek quartz-dioritepegmatites............................. Mica Creek peridotitepegmatite............................................ Gird Creek pegmatites..................................... |
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| GOLD PLACERS OF THE RUBY DISTRICT. By HENRY M. EAKIN. LOCATION AND EXTENT OF THE DISTRICT. The chief...chief settlement of the Ruby district is Ruby, situated on the south bank of Yukon River opposite the mouth...mines of the district are about 25 miles south of Ruby on a number of streams that belong to the Nowitna...on the rocks which outcrop in the bluff near Ruby Creek in 1902, but they were not published, being foreign...headwaters of Innoko River and in 1910 visited the Ruby, Innoko, and Iditarod districts.2 During that year |
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| Trace-Element Zoning in the Bodie Mining District, Mono County, California--A Comparison to the "Hot Spring" Model...North Slope and Beaufort Sea--Evidence from Carter Creek, Arctic National Wildlife Refuge (ANWR), Alaska...GEOLOGY 11 Sequential-Partial Extraction of Final Creek Aquifer Material Near Globe, Arizona for SO and...Framework of the Powder River Basin, Wyoming and Montana, Utilizing Computer-Generated Isopach and Structure...long belt from north Victoria Land to the Ohio Range. Although coal beds as thick as 10.7 m have been |
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| Mineralogist, Volume 65, pages 821-836, 1980 Sapphirine* quartz associationfrom Archeanrocks in EnderbyLand, Antarctica...Quartzites and granulites containing the sapphirine-quartz associationare found in the pyroxene-granulite-facies...assemblagein these quartzites is interpreted to be quartz-sapphirine-orthopyroxene-rutile+plagioclase. Cordierite...formed from the reaction between sapphirine and quartz after the peak of metamorphism.Sapphirinesare somewhatmore...associationmay representthe univariant reaction sapphirine+ quartz : sillimanite + orthopyroxenein the iron-free systemand |
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| through a wide range of scales, from millimeters to kilometers, respond to a wide range of processes,...have endeavored to compile examples from a broad range of environments and ages in order to provide participants...Shelf SEDIMENTARY HISTORY OF THE MOYVOUGHLY AREA, COUNTY WESTMEATH, IRELAND: EVIDENCE FOR SYNSEDIMENTARY...PERMIAN QUEEN FORMATION U.S.M. QUEEN FIELD, PECOS COUNTY, TEXAS . By K. E. Tucker and R. G. Chalcraft 9...downdip to Gray Bioturbated, Kaolinitic Dolomitic Quartz Sandstone. 'These siliciclastics occur with dolomites |
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| GEORGE OTIS SMITH, DIRECTOR 578 THE ^ IDITAROD-RUBY REGION ALASKA BY HENRY M. EAKIN WASHINGTON GOVERNMENT.................................................. Ruby district..................................................... Otter Creek............................................... Flat Creek................................. Black Creek.............................................. Willow Creek.......................... 34 Otter Creek................................................... 34 Flat Creek............... |
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| Mountain Wilderness Study Area and Extension, Buncombe County, North Carolina By F. G. LESURE and A. E. GROSZ...Mountain Wilderness Study Area and Extension, Bunc1m County, North Carolina. (Geological Survey bulletin ;...studied is in the Pisgah National Forest in Buncombe County. CONTENTS Page Summary -------------------...------------------------------------------------Quartz-biotite gneiss -------------------------------...Mountain Wilderness Study Area and Extension, Buncombe County, N.C _____________ In pocket FIGURE 1. Index map |
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| to mari.Iie conditions of deposition in central Montana during the Eagle and Judith River epochs, by C... Geologic exploration of the southcustom front range of trans-Pecos Texas: Texas Univ. Bull. 1753 pp...Mountain regions, although farther north, ·in· Montana, this activity appears, to have commenced at an...Oower Eocene) age, which is on Calaveras · Creek in Wilson County, Tex.; 355 miles west of the most westerly...Geon01nites are found in assemblages which indicate a range from humid wann temperate conditions (for example |
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| Deposits of the Permian Rocks in Central Western Montana GEOLOGICAL SURVEY PROFESSIONAL This report concerns...Deposits of the Permian Rocks in Central Western Montana By ROGER W. SWANSON GEOLOGY OF PERMIAN ROCKS IN...district_____________________ Gird Creek syncline__-__-_______-_-_________ Douglas Creek syncline.---____-_-____--__-__...Coberly syncline.__-______________-_________ Gold Creek syncline________________________ Pendant syncli...Summary of phosphate resources in central western Montana. ________________________ References cited__________________ |
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| 6. Thickness--In meters at the type section; a range is given if known. 1. Texture, structure, distinctive...phyllitic and pyritic quartzite intervals 5. Gray 6. Range 1500-2100 m 9. Overlies Heflin Phyllite (Talladega...Cleburne County. Absaroka Supergroup/Volcanic Supergroup U ABRK03 1. Eocene 2. Wyoming (NW), Montana 3. Smedes...m 8. Washburn Group, Sunlight Group, Thorofare Creek Group g. Unconformably underlies Junction Butte...volcanic field, Yellowstone National Park, Park County, Wyo. Academy Church Shale Member (Springer Formation) |
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| the Bird Mountain 7 .5-min quadrangle in Brewster County, Texas, is shown (fig. 3). The upper Cathedral...._ 0 30 l NORTHERN DEL NORTE MOUNTAINS I COUNTY 50 KM I 50 Ml I ., Figure 1. Location of the...immature, hematitic sandstone, siliceous cement, and quartz and chert grains. All sandstones but the lowest...siliceous and calcareous cement, composed mostly of quartz but containing some chert grains and sedimentary...and are laterally discontinuous. Sand grains are quartz and chert; some beds contain pelletal intraclasts |
