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| (amiant) s epidotomje v granite na lokalite Nižná Boca blízko štôlne Josephi (Zipser, 1817). Vysoké a Západné...veľké sa nachádzajú v potoku Borzová a v oblasti Vyšná Stráň, v okolí Vígľaša (Fiala, 1954; Kodera et al...Našli sa v starých banských dielach na lokalite Vyšná Boca (Ozdín a Chovan, 1999), v Dúbrave a inde. Na...(Rojkovič, 1997). A A t -; ASBOLÁN 60 Nižná Boca (Smimov et al., 2006).Arzenopyrit Štiavnické vrchy:...sedimentami (Modra-Dolinkovský vrch) alebo vulkanitmi (Vyšná Šebastová-Maglovec; Ozdín et al., 2006). AXINIT-(Fe) |
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| September and was centred on Nenthead and the Lake District. Six members of the Society made the long journey...Rampgill mines and the last day high in the Lake District on the Old Saddleback mine dumps at a height of...siderite/ankerite and more recently epimorphs of quartz after fluorite ( see Vol.8. Pt.1 Journal of the...through a tight squeeze into an area where there were quartz epimorphs to be collected from loose material on...a constituent mineral in the manganese bearing quartz veins outcropping at this site. On the shaft dump |
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| DIRECTOR BULLETIN 527 ORE DEPOSITS OF THE HELENA MINING REGION MONTANA BY ADOLPH KNOPF WASHINGTON GOVERNMENT.............'................... Location of the region..................................................andesites ....................................... Quartz monzonite.......................................................................... Marysville district..................................................................................... Elliston district.............................................. |
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| Director Bulletin 842 OF THE GREATER HELENA MINING REGION MONTANA BY J. T. PARDEE and F. C. SCHRADER...___-_____________-_-_--___-_-__---_-_.--_____ Granite (quartz monzonite)____.__-_______--__-_-______ Rhyolite...______________________-__-_________--_------___-_ Ophir district.________________________________________________...__________---__--_-___ Austin district._.____..._..._._.____._____.____.___-.___._____ Marysville district.___________...___________________________________________ Gould district._______________________________________________ Stemple |
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| MINERAL AND ENERGY RESOURCE ASSESSMENT OF THE HELENA NATIONAL FOREST, WEST-CENTRAL MONTANA Edited by... MINERAL AND ENERGY RESOURCE ASSESSMENT OF THE HELENA NATIONAL FOREST, WEST-CENTRAL MONTANA U.S. GEOLOGICAL...GEOLOGICAL SURVEY OPEN-FILE REPORT 96-683-A * The Helena National Forest (the Forest) covers about 975,000...west-central Montana. It lies in the vicinity of Helena, the capitol city of Montana, and includes Federal...and Lewis and Clark. * Gold was discovered in the region in Powell County in 1852. Mining began in the 1860's |
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| gold-bearing veins that made the Marysville mining district famous in the early history of Montana. The Marysville...obtained during recent detailed investigation of the region by the writer, and the conclusion is reached that...order, the Empire formation, the Helena limestone, renamed here Helena dolomite, the Marsh formation, and...formation and the Helena dolomite through which it cuts. The metamorphism of the Helena "limestone,, was...described by Barrell in his classic memoir on the district, but not that of the Empire formation, which was |
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| in western Montana........................ 106 Helena Mountains..................................................... ............ 120 Localities near Helena..................................................and the Lewis and Clark ranges, which lie in the region represented by the Ovando, the Coopers Lake, and...writer have traced the Newland, the Spokane, and the Helena formations, and those of the Missoula group from...established regional datum planes, such as the top of the Helena or the Newland limestones. Whether or not the higher |
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| that now it formsthe prevailingsurfacerock o.f the region. As a consequence of the granite invasion a series...report by the writer entitled"Ore Depositsof the Helena MiningRegion,Montana," Bull.U.S. Geol.SurveyNo...SurveyNo. 527(in press). Io 5 106 ADOLPH KNOPF. region,was formed around the margin of the granite and...intrusion of the Boulder batholith are Wickes, Helena, Rimini, Elkhorn, and. preeminently, Butte. The...conclusionfollows logically that many ore depositsof the region, which belong to Lindgren's deep-zone group, were |
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| pre-Cambrian age. The Idaho Springs formation, a quartz biotite schist of sedimentary origin, is really...rocks of the area include stocks of granite gneiss, quartz diorite, and hornblendite, and the younger Silver...pre-Cambrian rocks of the Cottonwood-American Fork mining region of Utah, southwest of Park City, consists mainly...layer resembling tillite. The St. Joe-Clearwater2 region of Idaho, comprising about 250 square miles, lies...the southeast of the Coeur d'Alene lead-mining district. The Algonkian sediments exposed in this area |
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| but it also became the center of activity in the region. The town of Elkhorn grew around the mining operation...surrounding area became known as the Elkhorn mining district. Below Elkhorn and Christopher S. Tucker Crow...M. Reinig, who operated a photography studio in Helena, Montana, from about 1907 until 1940; this is likely...116 tons of the much-milled tailings out of the district as flux in 1943 (Gray 1998). The Elkhorn Silver...then began pumping water out of it for use in a district-wide core-drilling project (Everson et al. 1989; |
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| Formation.___________________________________________ Helena Dolomite._____________________________________________...lead and zinc occur in the Spokane Formation and Helena Dolomite of Precambrian age, the Flathead Sandstone...mineralization. This mass is interpreted to be a quartz monzonite pluton lying just below the westwarddipping...E3 Lewis and Clark Forest, and Henry Greitl, District Ranger, were most cooperative in assisting with...GEOLOGY the Empire and Spokane Formations and the Helena Dolomite (Mudge, 1966b; McGill and Sommers, 1967) |
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| Gold Deposits in the Virginia City-Alder Gulch District, Montana By DANIEL R. SHAWE and KENNETH L. WI...Gold deposits in the Virginia City-Alder Gulch District, Montana / by Daniel R. Shawe and Kenneth L. Wier...placersG G7 Helena—Last Chance district, MontanaG G9 Virginia City—Alder Gulch district, MontanaG G9...G9 Boise Basin district, IdahoG Gll References cited Gll Gold deposits in the Virginia City-Alder Gulch...Gulch district, Montana G14 AbstractG G14 IntroductionG G15 Geology Gold depositsG G15 Age of the depositsG |
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| 1951 GEOLOGY AND GROUND-WATER RESOURCES OF THE HELENA VALLEY, MONTANA By Howard W. Lorenz and Frank A................ Chemical quality of water in the Helena Valley..............*.... Introduction..o»................................. Waterlogging in the Helena Valley................................ Present...39 39 io ^0 k2 Plate lo Geologic map of the Helena Valley, Mont............. 2. Section showing successive...successive changes of water level In wells in Helena Valley, Mont., during June, July, August, and September |
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| ll!RECTOR GEOLOGY OF THE MARYS,TJLLE NfiNING DISTRICT, ~IONTANA A STUDY OF IGNEOUS JNTH.USlON AND..._______ . __ ·- __ ._·______________ . __ ... _ Helena limestone ....... _........ _._ ... _.. __ ............ __ ._ .... _. __ ._ ... _.. ___ . __ .. Quartz diorite of Marysville batholith. ___ .. _. __ ...-Continuod. Page. Structural g<~ology of the Marysville district. ........................... __________________.... __ .. 21 Folds and faults of the Marysville district _. _.... _... _: .... ___ ....... _.... _.... |
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| Klepper) 7* Partial, analyses of the Helena limestone near Helena. Mont. 8» Partial analyses of molar-tooth...equivalents* In their early work the Siyeh and Helena Here correlated and thought to "be younger than...Kitchener and the Siyeh, Wallace, Blacfcfoot, and Helena, among others, as being equivalents (table 2) *...the tfolted States, each is used only in a single region. 3bmsnclature has varied but currently in northern...Springs. In Glacier latlonal Park and the surrounding region Siyeh limestone, derived from Mount Slyeh, (Willls |
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| .......................................... 690 Helena limestone and its equivalents....................section across western Montana from the region near Mis soula to Helena, crossing the south ends of the Mission...Glacier Park by Willis,3 in the Cœur d’Alene mining region by Calkins,4 in northwestern Montana by Calkins...Montana, Calkins 14 was working in the Cœur d’Alene district, and in Philipsburg, publishing his reports and...Dawson : Report on the geology and resources of the region In the vicinity of the Forty-ninth Parallel from |
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| east of Helena.. 82 Distribution 82 Greyson shale 83 Spokane shale 84 Empire shale 84 Helena limestone...outlines of quadrangles and other areas in the region that are cited in this report. 3. Fence diagram...Rocks from in and east of the Coeur d'Alene mining region, Shoshone County, Idaho, and Mineral 48 County...sedimentary rocks 23. Partial analyses of the Helena limestone near Helena, Mont 24. Partial analyses of molar-tooth...spectrographic analyses of selected specimens from the Helena limestone along the Helen:, Scenic Drive about |
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| Sulphur Springs 10 Great Falls Bozeman 287 28 Helena 13 29 30 32 27 17 16 8 7 87 t Havre ... . . . . . . . . . . . . . . . . . . . 101 41. Quartz Hill . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . 125 51. Rochester Mining District . . . . . . . . . . . . . . . . . . . . . . ....mountains, like this one in the Neihart Mining district, stand as testimony to the mining craze in Montana’s...Nestled in these valleys are historical towns such as Helena, Missoula, Butte, and Bozeman. The mountainous |
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| Data on the composition and mineralogy of the Helena dolomite outside the aureole allow inferences concerning...reviewedmost recently by Weill and Fyfe (1964). The Helena dolomite (Knopf, 1950), from which the hornfels...1966). Except where adjacent to the stocks,the Helena dolomite is essentially unmetamorphosed.It is the...zones.On the south side of the aureole, where the Helena dolomite may be traced into the contact aureole(Fig... F aV t- L a)41 lna >l t30 TAMORPHOSED HELENA FORMATION U 2 o t(xb f,r.r-=E 2oooFt cN o |
 | Graham, G., Hitzman, M. W., Zieg, J. (2012) Geologic Setting, Sedimentary Architecture, and Paragenesis of the Mesoproterozoic Sediment-Hosted Sheep Creek Cu-Co-Ag Deposit, Helena Embayment, Montana. Economic Geology, 107 (6) 1115-1141 doi:10.2113/econgeo.107.6.1115 | Journal (article/letter/editorial) |
| Mesoproterozoic Sediment-Hosted Sheep Creek Cu-Co-Ag Deposit, Helena Embayment, Montana GARTH GRAHAM,1,† MURRAY W. HITZMAN...1G4, Canada Abstract The northern margin of the Helena Embayment contains extensive syngenetic to diagenetic...north of White Sulphur Springs, Montana, in the Helena Embayment, the eastern branch of the Mesoproterozoic...Creek Deposit Coeur d’Alene D 47° Missoula E Helena Embayment F Oregon 45° Soap Gulch Prospect Extent...the northeastern edge of the Basin, within the Helena Embayment. Letters correspond to locations on Figure |
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| mining. Other small gold deposits were found in the region. Gold was found to the south in the Beaverhead...prohibited white men from entering the Yellowstone region. This fed rumors of gold in the area. On 10 April...produced $16 million and established the city of Helena. Placer mining camps sprung up all over the territory...(Staatz et al. 1979). Browns Lake mine, Rock Creek district, sec. 3 and 4, T. 4 S., R. 10 W. Mined from 1954...1972). Calvert mine = Red Buttons, Wise River district, sec. 12, T. 1 N., R. 13 W. The pit is reached |
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| Part II Geology and Gold Deposits of the Oatman District, Northwestern Arizona By ED DEWITT, JON P. THORSON...Mining District, Montana By JAMES W. WHIPPLE Gold Deposits of the Boulder County Gold District, Colorado... CONTENTS Geology and gold deposits of the Oatman district, northwestern Arizona Abstract II Introduction...Geology and gold deposits of the Marysville mining district, Montana Abstract 129 Introduction 129 Geologic...III Gold deposits of the Boulder County gold district, Colorado Abstract 137 Introduction 137 Acknowledgments |
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| HILL GOLD DEPOSIT, MONTANA. VERNER NEAR HELENA, • JONES. INTRODUCTION. THE Spring Hill gold...gold mine, located four miles southwestof Helena,Lewis and Clark County,Montana,was the leadinggold producerof...REGIONAL GEOLOGY. The areal geologyof the Helena district has been discussed in a reportby W. H. Weed'5from...•933. x Knopf, A.: Ore Deposits of the Helena Mining Region, Montana. U.S. Geol. Surv. Bull. 527,...Deposits in the Winston-Deer Lodge Area, South of Helena, Montana. U.S. Dept. of the Interior, Memo. for |
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| mine____________________________ 90 93 95 98 Helena-Frisco mine________ _______ Morning lode __________________...deposits to other deposits in the Coeur d'Alene district ___________________ 120 Antimony deposits_____...INTRODUCTION. The Coeur d'Alene district, the most productive mining district in Idaho and one of the great...geology and ore deposits of the Coeur d'Alene district, Idaho : U. S. Geol. Survey Prof. Paper 62, 190S...a large mining district, and this is particularly true of the Coeur d'Alene district. Many eminent geologists |
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| Empire Formations ---------------------------------Helena Dolomite ................-----.-..-----------------------...units 8 3-7. Photographs: 3. Evans Peak, showing Helena Dolomite and Snowslip and Shepard Formations.-...square miles, lies about 45 miles northwest of Helena and about 50 miles northeast of Missoula, Mont...are not economically significant. Copper is in quartz-carbonate veins and in green beds in the Precambrian...Precambrian sedimentary rocks. The copper-bearing quartz-carbonate veins are in the southernmost part of the |
