 | | Journal (issue) | | attraction. Photo courtesy of Peter Megaw. Introduction ore mining at the Ojuela ceased in the mid-1940’s, but...respective heydays, exploiting hydrothermal polymetallic ore deposits. The Tsumeb deposit, however, is geologically...has done so only during the last 60 years, after ore mining had largely come to an end (we almost dare...specimens the miners probably encountered and crushed as ore or discarded as waste during those 340+ years). Both...fluorite, celestine, apatite, and magnetite iron ore, have produced few noteworthy specimens. But the |  | | Journal (issue) | | available). Arizona being the remarkably mineral-rich region that it is, we have not yet come close to describing...yielded hundreds of tons of wulfenite crystals as ore. And yet it is probably among the least visited by...recounted by Dowell (1978a, 1978b). The Total Wreck ore deposit was discovered in 1878 by John T. Dillon...levels, and miners began hauling out 50 tons of ore per day, which at first was stockpiled on the dump...mine opening to the mill, and a mule-drawn 5-ton ore car was brought in. In 1882 a massive steam-powered |  | | Journal (issue) | | Broken Hill, bernalite has also been found in Germany, but to date it has not been made synthetically...the silicate minerals of the Earth's mantle, a region which constitutes 60% of the volume of the planet... Namibia; the Clara Mine in the Black Forest, Germany; Broken Hill, New South Wales, and Langban, Sweden...mining around the turn of the century, and the mine dumps have continued to provide interesting specimens...specimens from pockets in the primary ores. The dumps of this mine, particularly on the Western Lode, |  | | Book | | portray the main chemical elements of the Tsumeb ore deposit and sym bolize from top to bottom: Copper...Eisenbahn-Gesellschaft: 1906-1946 . Tsumeb Mine . Ore Concentration and Smelting Ra:ilway and Communications...venturing too far down a blind alley in search of ore. And so it came about that I paged throitgh most...The search for a picture of the original Tsumeb ore outcrop was first rewarded by a gift from Dr. A....their keeping. The section on the present Tsumeb smelter was largely written by the Superintendent, Mr. |  | | Report (issue) | | Tooele County. 7. Map and longitudinal profile of ore bodies in Scranton mines. 8. Sketch map of the geology...6. Diagram showing fissure vein of oxidized zinc ore, Redmond silver mine, Redmond_________________________________...18 8. Section of a large low-grade oxidized zinc ore body in the hanging wall of a lead vein, Lower Mammoth..._ 19 9. Diagrammatic section of the Horn Silver ore body, Frisco____ 20 36 10. Sketch map of Tecoma and...districts, mines, claims, and prospects of oxidized zinc ore in Utah__________________________________________ |  | | Book (edition) | | Daliranite, 5111111, Zarshouran Au-As deposit, Takab region, Iran Grandviewite, 5 111111, Capillitas deposit...Anthropogenic on burning coal dumps of the Anna mine, near Aachen. Germany. CM 51, 57-66, 2013. Afmite...In acic~- depo it, N of ofija, Vratsa-Izdremet ore region, Bullar crystals to I mm, pale yellow, transparent...meteorite impact crater, N of Nordlingen, Bavaria, Germany. AM 95, 892-895, 2010. Aklimaitc CaJ(OH) 4 JSi2Os(OH)2]·5H...the Alcaparrosa mine, Cerritos Bayos, Antofagasta region, Chile. MM 76, 851861, 2012. Aldrigeite (Cd,Ca)(Cu |  | | Book | | of debris washed down fromthe Roughton Gill mine dumps under Iron Crag C O N T E N INTRODUCTION...Elizabeth I to work copper and silver there. The smelter they built at Keswick was the largest in Europe...contributions on the topographical mineralogy of the region updating the earlier work of Greg & Lettsom (1858);...elsewhere in the Lake District, where the dominant ore minerals are sulphides of lead, copper and zinc,...antimonyin the Caldbeck Fells ores that the master smelter Joachim ve Gaunse referred to in 1581 as oneof |  | | Report (issue) | | similarities in their geologic characteristics (ore and gangue mineralogy, major- and trace-element geochemistry...lithology, wall-rock alteration, physical aspects of ore, etc.), as well as their geologic setting (see for...to have potential for economic exploitation. An "ore deposit" is a mineral deposit that has been tested...Jambor and Blowes (1994), and Plumlee (in press). Ore and gangue mineralogy, host rock lithology, and wall-rock...minerals, carbonate minerals, whether present in ore or in host rocks, can help consume acid generated |  | | Journal (issue) | | Ueber Heidelberg, W. Germany Olaf Medenbach Ruhr Universitat Bochum Bochum, W. Germany Eric Offermann Arlesheim...genetic relationship to diamond and may vary from one region to another. The accessory minerals are well known...groundwater levels. (c) Overburden. Deposits overlying the ore gravels can be even thicker. This overburden is typically...diving gear which they will take turns using. The ore grade is always low, ranging from 1 carat per cubic...of gravel. The gem percentage varies from region to region, but generally 20% to 40% of the diamonds |  | | Journal (issue) | | Behnke Northbrook, IL Werner Lieber Heidelberg, W. Germany Eric Offermann Arlesheim, Switzerland Jeffrey A...subparallel aggregates and rosettes associated with conichalcite and mixite, scattered over fracture surfaces...gossan. It is associated with Ca-rich mixite, conichalcite, chrysocolla, azurite, gold and quartz. In the...Specific associations, such as juanitaite-mixite-conichalcite or juanitaite-connellite-tyrolite-azurite, are...ounces is extracted from over 15 million tons of ore. Average production is over 40,000 tons per day, |  | | Report (issue) | | Metastrcngite VVeinschcnkite Rhabdophane Pscudomalachitc Conichalcite Herderite Crandallitc Florencite Triplite Rockbridgeite...to collect from the rather thoroughly pickedover dumps! Selected References Fontaine, W. M„ 1883, Notes...their bearing on the geomorphic history of the region, their included relatively rare minerals (see,... radial and plumose forms occur intergrown with ore minerals, e.g., pyrrhotite, at the Betty Baker Mine...Antimony has been reported to occur in the Gold Region of the Pied mont (Shepard, 1834). ANTIPERTHITE |  | | Report (issue) | | Weir. A Bulletin No, 6. Leaching a Lime-Zinc Ore with Acids. Bulletin No.7. and Drain Tile. Results...about the folding and faulting in the Appalachian region took place in a geological period much earlier...planes without dooming. In most cases metalliferous ore deposits are either directly or indirectly connected...Survey, Bull. No. 260, pp. 468-479. (8) Geology and Ore Deposits of the Park City district, Utah: U. S. Geol...Boutwell, J. M., and Keith, Arthur. (9) Geology and Ore Deposits of the Bingham mining district, Utah: U |  | | Book | | large ilmenite masses could be seen on the old dumps. In 1975-1976, Brunet collected sharp, black, flattened...7 .5 cm in matrix of massive quartz from these dumps-adding that, in his judgment, many more "lost" localities...localities for good ilmenite crystals exist in the region (Brunet, I 977b ). NEW YORK Amity, Orange County...in Switzerland, it is only in the Maderanertal region of east-central Canton Uri that clefts bearing...clefts are found fairly commonly throughout this region, such that only a handful of notable finds during |  | | Journal (issue) | | Je n n i’s insatiable curiosity led him to the dumps of the long defunct portion of the quarry, the “...titanite, geikielite. H e first noted it on the dumps of an adjoining property and it was identified as...useum and many museums in England, France and Germany. Although I had corresponded with Col. Jenni for...practitioners of our hobby. September— October, 1971 M ore than ever, collectors in many countries are themselves...the period 1933 to 1941; in all, some 130 tons of ore were shipped for a total of over 150 ounces of gold |  | | Book | | leading authority on mineralogy, describes the unique ore deposits at Franklin and Sterling Hill, New Jersey...Mineralogy of the Deposits Ore Minerals, 20 Skarns, 21 Geochemical Features of Ore and Skarn, 23 Vein Occurrences...first appears in the mineralogy of the ordinary ore, where zincite and franklinite, both scarcely known...The textural and exsolution relations of both the ore and skarn minerals, as responsive to the complex...persons living in Franklin or in the surrounding region. These col¬ lections have since been dispersed |  | | Book | | halfway between Toronto and Hudson Bay, the Nipissing ore was puted be unbelievably rich to metal broker...and sampling program. drilling became it cient ore was present to justify production, ter clear that...predecessor companies into trying to mine it. Some ore shoots actually ran 65 per cent copper, and there...idea of mining and smelting Mason Valenough ore to ore together with ores from other small mines as...Nevertheless, had McNab design and build a smelter, including two blast fur- naces and two converters |  | | Book | | discovery and exploitation of a wide variety of ore deposits in Namibia makes for both interesting and...infonnation • that has greatly aided our understanding of ore deposition and mineral provinces, thereby facilitating...grants as well as on specific mineral occurrences and ore deposits. With the advent of an international conference...{80 million t. IOOOto 2000 ppm copper). In this region the sequence ends with a succession of reel beds...Clemmey, 1986)and at Kojeka. Some 13million t of ore have The exploration targets and mineral deposits |  | | Journal (issue) | | We had secured permission to hunt on the mine dumps ahead of time (it was then possible to secure permits...Iroquois Mine on Cliff Drive is the Cliff Mine-with dumps on both sides of the road . We usually hunt on the...walk in the woods, found ourselves at the mine dumps. I did not find much in microcrystals at this dump...the intersection of Highway 41 and M26. The mine dumps are to the left. We turned in that direction and...parking our Vans on the grass clearing next to the dumps. A rare find are twinned chalcocite crystals in |  | | Book (edition) | | Society of Safety Engineers (ASSE) Association of Iron Ore Exporting Countries (AIOEC) Bituminous Coal Institute...distinguished by an Archimedes spiral, through which the ore is fed and discharged. Grinding is effected by flint...formation involving the separation and sinking of ore minerals below a silicate shell during the cooling...acid cure In uranium extraction, sulfation of moist ore before leaching. Pryor, 1 acid-dip survey A method...extraction of copper from oxide- or sulfide-bearing ore and dissolution of uranium from sandstone ores. Acid |  | | Book | | refractive indices. Many sulfides are very important ore 1ninerals. 4 Detailed Description of the Common...the secondary enrichment processes of hydrothermal ore deposits. Pyrite is rare in pegmatite veins. Gabbros...specularite as smaJl scales or flakes. Reniform (kidney ore) or botryoidal forms are common as dehydrated goeth...Bose, M. K. 1958. Goethite-bematite relation- an ore microscope observation. Amer. Mineral.. 43, 989....pyroxenes than ol ivines. Ilmenite is quite common in ore veins, where it appears most commonly with chalcopyrite |
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