 | | Journal (article/letter/editorial) | | mine tunnel walls; weathering products of mine dumps and slag). A second human influence on the distribution...in the combustion products of coal mines, waste dumps, or peat bogs. The origin of a particular fire is...localities A. Alteration phases recovered from ore dumps Delrioite 3 Sr(V5+O3)2·4H2O Jo Dandy mine, Paradox...localities, Greece Zn5(OH)8Cl2·H2O Richelsdorf slags, Hesse, Germany Pb3O3Sb3+(OH)Cl2 Lavrion District...associated with mine dump fires, including coal mine dumps Acetamide 1 CH3CONH2 Dump in a coal mine, L’viv-Volynskii |  | | 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 |  | | 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 |  | | 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 |  | | Report (issue) | | Maritime Plain, a lowland within the Appalachian region, that includes Prince Edward Island and adjacent...They were formed in Mississippian time when the region was invaded by seas that laid down layers of limestone...glacial ice. With the retreat of the glaciers, the region was uplifted, but the islands failed to reach their...sandstone that underlies the surrounding low-lying region. The road log continues straight ahead. 3.2 Butte...in volcanic rocks associated with the manganese ore. Cavities in the limestone are common; they are lined |  | | 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 |  | | 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 |  | | 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 | | 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 |  | | 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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