[en] Facies analyses of Ghichon Fm. (Ks) in the Paso Hervidero area (Paysandu Departament Uruguay) are presented in this paper . Mainly fine sandstones and secondly mudstones and conglomerates corresponding to a fluvial environment were described. Paleodrainage currents to western, southwestern were observed. (author)

[en] Cranial eumycetoma (CE) due to direct inoculation of Madurella grisea into the scalp is extremely rare. We describe a case of CE caused by direct inoculation of M. grisea with the characteristic MRI findings of the “dot-in-circle” sign and a conglomeration of multiple, extremely hypointense “dots.”

[en] The southwestern part of Cuddapah Basin consists of two distinct types of rocks, i.e. lower arenaceous and upper calcareous, which are termed as Gulcheru quartzite and Vempalle formation. Results of field and subsurface exploration revealed two repeated sedimentary sequences of arenaceous-argillaceous-carbonate units in Papaghni Group. These sequences represent marine transgression and regression cycles in Papaghni Group. Field characteristics of conglomerate (Vempalle Conglomerate), observed above massive dolostone in lower part of Vempalle Formation, show extra-formational and polymictic nature. Subsurface exploration in Tumallapalle and extension areas has also proved continuity of Vempalle conglomerate over 25 km along strike and 3.10 km along downdip direction. Secondly, the gradational contact was observed between Gulcheru shale and massive dolostone in surface exposures, which was also confirmed in one borehole (BH No. TPL-II/83) drilled more than a kilometer vertical depth. The strike and dip continuity (of Vempalle conglomerate) and gradational contact (in Gulcheru) have given a new understanding to the stratigraphic position of rock sequence in Papaghni Group. In the present study, it is proposed to revise the stratigraphic succession by placing carbonate unit of massive dolostone as a part of Gulcheru Formation, and Vempalle Formation would commence with the Vempalle conglomerate. (author)

[en] Through the study of occurence, form, texture and composition of breccias in the area of No.670, the geological body in that area is considered to be formed by the magmatic intrusion and crypotoexplosion with the action of residual volcanic magma and hydrothermal fluid. By using this studied results of breccias formation, the uranium metallogenesis is also discussed

[en] As part of the long-range plans for the Energy Fuels Corporation, they have embarked on one of the most active and aggressive uranium exploration programs in the US. These exploration efforts are located in the northwestern part of Arizona in an area referred to as the Arizona Strip. At a time when the domestic uranium industry is staggering to recover from its worst economic slump, Energy Fuels is spending millions of dollars a year on exploration, development, production, and milling. The reason for Energy Fuels' commitment to uranium exploration and production lies in the ground of Arizona in unique geologic formations called breccia pipes. Some of these structures, generally no more than 300 to 350 ft in diameter, contain uranium that is, on the average, five to ten times richer than ore found elsewhere in the US. The richness of this Arizona ore makes it the only conventionally mined uranium in the US that can compete in today's market of cheaper, high-grade foreign sources. Between January 1980 and December 1986, Energy Fuels has mined more than 10 billion lb of uranium from breccia pipe deposits at an average grade of 0.65% U₃O₈. Currently, Energy Fuels is operating six breccia pipe mines, and a plan of operations on a seventh mine has been submitted to the appropriate government agencies for the necessary mining permits

[en] India is deficient in both gold and uranium resources. Almost one-third of the annual global mine production of ∼2500 tonnes of gold is imported into India to fulfil the high gold consumption. Uranium is important for production of nuclear energy, more specifically to execute the country's ambitious programme to generate 20 GW of electricity by 2020

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[en] Ground Radiometric survey of Paleoproterozoic pyritiferous quartz-pebble conglomerate (QPC) occurring to the north of Pallahara area led to the discovery of a QPC type uranium mineralisation near Mankarhachua village. Significant radioactivity is recorded in three sub-parallel uraniferous QPC horizons with metamorphosed pebbly to medium grained recrystallised massive sandstones. Detrital grains of uranothorite, thorite, radioactive allanite, monazite, zircon, minute uraninite grains in carbonaceous matter and thucolite contributes to the radioactive phases present in QPC matrix. Adsorbed U on limonite and goethite, secondary uranyl minerals in matrix, along bedding planes and fractures are commonly observed. This discovery has opened up a new horizon for future exploration for QPC type uranium mineralization in the area. The paper presents observations on geology, radioactivity, petrological and geochemical nature of the uraniferous QPC horizons. (author)

[en] This report is about the stratigraphic al analysis of the Guichon Formation (lower cretaceous, litoral basin in Uruguay). The facies association is represented by conglomerates mainly fine sandstones and mud stones wi ch is interpreted as an alluvial system. A regional palaeogeography and a new geochronological alternative are established for this formation. (author).