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| carbonate spars free from cobaltiferous ores, especially an 8-meter (25-ft.) vein at the diorite contact, worked...mica. The iron deposits of Dobschau still yield an annual production of about 35,000 tons, but the cobalt...' This Kupferschiefer is cases. lean in this district, carrying only 1.4% of copper, and no silver,...fissures known as 'rucken' in the Mansfeld copper district also contain occasional nickelite, together with... known examples of this type is the cobalt district of Schneeberg, in Saxony, a mountainous region |
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| Alfredo Petrov alfredopetrov@earthlink.net Sitting on an immaculate white beach, looking out over coral reefs...if I'm bitten up on a mountain? No, you have only an hour before death; try to get bitten closer to the...(Continued from page 1) In those days, Julie was an associate editor (for photomicrography) for Mineralogical...for me to obtain my first professional microscope. an Olympus stereo-zoom model that I still use in my...part of my lectures at local mineral clubs. He had an inquisitive mind, and he often peppered his guests |
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| MOUNTAIN DISTRICT Washington County, Idaho and IRON ORE DEPOSITS IN THE CLEARWATER DISTRICT Idaho County...1947 IRON ORE DEPOSITS OF THE IRON MOUNTAIN DISTRICT, Washington County, IDAHO CONTENTS Page Summary..... 23 ILLUSTRATIONS ^ /j|^ ^/ Iron Mountain District, w T Washington County, Idaho 9 » and* Index....pocketx IRON ORE DEPOSITS OF THE IRON MOUNTAIN DISTRICT Washington County, Idaho SUMMARY The iron ore...Mountain district are 33 miles by road from the Union Pacific railroad at weiser, Idaho* An. alternative |
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| Lead and zinc deposits in the Metaline mining district, northeastern Washington, by Howland Bancroft...17. Map of the Woodward group of mining claims, north of Tyrone, N.Hex..................................veins along later vertical veins carrying only limonite............... 25. Sketch map showing the location...deposits in the producing portion of the Ducktown district................ 26. Cross section of the Mary...Washington, showing the location of the Metaline mining district...................................... 33. Map |
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| MINING JOURNAL TRANSLATOR'S PREFACE. In presenting an English edition of Professor Beck's 'Lehre von den...the publishers to practically rewrite the book from an American standpoint, giving greater . prominence...AUFLAGE Als die Vortrage iiber Lagerstattenlehre an der Kb'niglichen Bergakademie zu Freiberg mir iibertragen...Lehrbuch in deutscher Sprache Hieraus entsprang der Plan, selbst jene Liicke auszufiillen, vermissen...nnd von neuem durchgeseliene Lagerptattensammlung der Bergakademie eine vortreffliche Werk aufgebaut |
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| .............................................. North Carolina and South Carolina....................................................... Cartersville district.................................................................................. Cave Spring district.......................................................................................... 95 North Carolina..........................................region................................ Batesville district.............................................. |
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| The bright-red soil and abundance of debris of limonite (hydrated iron oxide) in bowlders, slabs, and...situation is greatly changed now. Two lines running north and south, the Kansas City Southern and the Texas...which have brought most of the known deposits of limonite within 4 miles of a railroad, interest in their...attention has been devoted to the iron-bearing deposits. An opportunity was presented for a reconnaissance of...Selrrian formations in Texas.) ~~ 16 Scale Limonite prospect 20 Miles FIGURE 11. Map of Bossier |
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| one sense it comprises the so-called Rockwood district and may be considered to extend as far southward...under present conditions. Beds dipping uniformly at an angle of 25° would reach a depth of 1,000 feet at...the material a suitable flux for brown ore or limonite. It is characteristic of the Clinton ores of this...in the region. ~ In the following pages is given an outline of the main facts on which are based the...Appalachians, ROCKWOOD DISTRICT. i LOCATION AND EXTENT. The Rockwood district lies in the Tennessee River |
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| _____-_______________ Hematite______________________________ Limonite-____________________________________________ Magnetite...topographic map of the Punitaqui quicksilver Page district, Coquimbo, Chile___________--____--_________ In...when the large mine at Punitaqui started producing an average of 2,000 flasks annually for export. The...kilometers long, extending from Copiap<3 to Illapel, in north-central Chile. They are with few exceptions in the...closely associated with copper carbonates and limonite, is of supergene origin, having been formed by |
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| Barns Batch Spinney and Grove Farm are described. An analysis of the Aalenian/Bajocian ammonite faunas...particularly those recently collected from the Bruton district of Somerset. Finally the type horizons of the...stratigraphic range. The fol1owing account is thus primarily an attempt to revise the Iitho- and biostratigraphy...to their Cotswold equivalents, but rather to the north Dorset deposits of the same age. These differences...with the prevalence of limonite ooliths, 'snuff-boxes' (complex, laminated limonite concretions, q. v. GatralI |
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| __________________________________________ _ Rocks of the district ______________________________________________...veins in these rocks are known to contain thorite as an important constituent. Tertiary volcanic rocks that...Pass area ; two major systems bound the district on the north and west. Quartz veins in the area are grouped...INTRODUCTION This report describes the general geology of an area of about 80 square miles, and the detailed geology...associations of the thorite, .and to evaluate the district as a potential source of thorium. The study was |
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| ----------------------------------------------LIMONITE ORES______ ----------------------------------...main part of the report is devoted to brown or limonite ores, as these are the ores that have so far been...furnaces were in operation in the county, the ore, limonite or brown hematite, being taken from deposits in...of the Alabama Great Southern Railroad, 1 mile north of Tren~.on, Dade County, and about half a mile...Madison County and possibly at other points in North Georgia. In 1874 the Rising Fawn furnace was erected |
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| Topography, in the Cartersville District, Bartow County, Georgia. An Exposure of Weisner Quartzite along...Cartersville District. Sections S'lowing Structural Geology ot the Cartersville District. Map Showing...the Distribution Manganese Ore in Cartersville District. Section of the Openings on the Blue Ridge Mining...Openings of the Dobbins Mine. Map of the Cave Spring District. Figures Illustrating the Formation of Manganese-breccia...Opening the Lowe Tract. Section along the North Side of an Opening on the Lowe Tract. Section across |
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| _________--____-_---_-------___-_--------_----_______ Ajo district.-_--_.____---------______--_-_--__---_______ Oatman...____________________________________________________ 11 Austria._____________________________________________________...______--__-__---_____----_____-__-___-___________ Bonanza district._________________________________________ Breckenridge...region___________________________________________ Spanish Peaks district.____________________________________ Summitville...________________________________________ Edwardsburg district._____________________________________ 11 11 12 |
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| PREFACE The barytes deposits of the Cartersville district of Georgia are the most productive in the United...geology and barite deposits of the Cartersville district, Ga.: ·The Tradesman, pp. 35-37, May 22, 1910...in ten days of :field work in the Cartersville district. Georgia continues to lead the states in the production... . . . . . . . . . . . . 17 -1H Oarters·ville district ......................................... 19-125.... . . . . . . . . . . . . . . . . . . 42 Eton district . . . . . . . . . . . . . . . . . . . . . . . |
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| prospect___-.__-_--_---_---__--.______________ Limonite. ____-__-----___--___-______-___--_____._--______-____..... __________________________________________ Limonite mines-----__----_-_------___--__-_-__.___________...__-_-_____--___-__- --_-_______-__-_--.__ Other limonite mines_-_-__------_-----____--_-_________ Pigments---...of gneiss, bank of Delaware River about 2 miles north of Easton, Pa.; B, Photomicrograph of quartzsericite...Photomicrograph of Byram gneiss, road half a mile north of Williams mine, Vernon Township, Sussex County |
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| reconnaissance of the northeastern part of the ore district by E. C. Eckel 2 in 1914. Johnson's'report does...prospects of the iron industry and an examination of the district with a view to selecting areas -for...LOCATION AND EXTENT OF ORE FIELD. The iron-ore district of northeastern Texas -lies between parallels...96° W. and measures roughly about 135 miles from north to south and 110 miles from'east to west. (See fig...furnace "» oelow) Approximate boundary of iron ore district LIST OF ORE-BEARING TRACTS 1 2 3 4 Bowie Hill |
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| occurs in a massive-sulfide deposit that is in a north-south trending mineralized belt. There is a moderate...Prospects in sulfide mineral occurrences on the belt north and south of the claim group and other prospects...surround the Condrey Mountain structural dome make up an extensive terrane of sedimentary, volcanic, and ultramafic...the Rogue River National Forest along the south slope of the drainage of Elliot Creek. A small southwestern...is in the Klamath National Forest along the north slope of the drainage of the Klamath River. The two |
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| Iron-Ore Deposits of the Iron Mountain District, Washington County, Idaho By J. HOOVER MACKIN A CONTRIBUTION...A description of the iron-ore reserves of the district UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...pocket] PLATE 13. Geologic map of the Iron Mountain district, Washington County, Idaho. 14. Geologic and magnetic...GEOLOGY IRON-ORE DEPOSITS OF THE IRON MOUNTAIN DISTRICT WASHINGTON COUNTY, IDAHO By J. HOOVER MACKIN ABSTRACT...ABSTRACT The oldest rocks of the Iron Mountain district are a group of greenstones, with interbedded marble |
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| County . . . . . . . . . . . . · .23 Iron Springs district deposits . . . . . . . . . . . . . . . 23 Location...Cricket Mountains . Pavant Range deposits . . . North Fork prospect .. Widemouth Canyon prospect Twin...deposits Iron Claims prospects Gold Hill barite-limonite prospects Sheeprock Mountains deposits Iron King... . . . . 31 9. Size and shape of Iron Springs district intrusions, from outcroppings and geophysical...porphyry, Iron Mountain. . 40 13. Iron-Springs district iron occurrences, Iron County . . . . . . . . |
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| and gold ores. Two Precambrian rock series having an aggregate thickness of 3,600 meters crop out in the...almost entirely made up of fine-grained quartzite; and an overlying unnamed formation, 300 meters thick, containing...group as another series, and because the group has an anomalous distribution in relation to the Minas Series...intrusive rocks. It is an indurated colluvial deposit of itabiritic cemented by limonite. Three granitic formations...Cocais gneiss dome. Foliation in in the dome strikes north-northwest, at 90° to the trend of the Gandarela |
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| Arizona (see fig. 6), with a trend a little west of north and a length of about 40 miles. It lies between...southward into Salt River. At the north end of the range is North Peak, which has an altitude of about 7,600 feet...area in central Arizona, attains an elevation of 7,645 feet. From North Peak to Salt River the crest of...bordering the Arizona Plateau along its southwest side. North Peak is 15 miles south of and in full view of the...in the vicinity of Pine Butte, 11 miles south of North Peak. Mount Ord, one of the prominent and well-known |
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| Precambrian ironformation in the Quadrilatero Ferrifero, an area of about 7,000 square kilometers in central...itabirite averages about 40 percent iron and may be an important source of iron in the future. The high-grade...resources of the Quadrilatero Ferrifero (see fig. 1), an area of about 7,000 square kilometers, in central...The city of Belo Horizonte is 345 kilometers due north of Rio de Janeiro by air and is served by about...prominent physiographic features of the region is an east- to northeast-trending mountain range extending |
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| Diego County, Cal., by W. T . chall er (published J an. 15, 1916)-- ----- - - - . - - - - - - - - - . -...Pin mining district, Clark ounty, N v.. Contorted flow structure in the rhyolite of, uck r an yon, Qr g...rn Idaho showin<> main tributaries of nake River an d principal lo a l.iti s at which plac r work has...of the nitrate field near Hom da l , Idaho, with an index map sh owing the location of th e H omedale... . . . . . . Outline map of th north ast rn 'r xas iron-ore district..... . ..... ction showing a ciations |
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| C. Whitman Cross. To these gentlemen is also due an important portion of the information now given. At...named who have kindly interested themselves in it. An extensive correspondence has been carried on with... Down to Helena, in Shelby county, the field has an average width of 5 or 6 miles. Below that point the...eleven of which are over feet thick, the eleven bavins an aggregate thickness of 40 feet of coal. The synclinal...Warrior and Tennessee rivers. Lookout mountain being an outlier of the plateau portion of this field The |
