A wide range of the temperatures of hydrothermal fluid regime (430-103 °C) has been revealed in the result of microthermometric study of the fluid inclusions in the minerals of pre-ore and post-ore stages developed at the Elkon deposit. Average temperatures, as well as the temperature variation are similar for both pre-ore and post-ore stages. It allows sure determination of temperatures of uranium ore formation as 400-120 °C. Fluids possessed Na-chloride, rarely Na-chloride-carbonate composition and moderate salinity (6-16 wt. % · NaCl equiv.). The wide range of tem-peratures confirms an assumption made before that various temperatures were the reason of formation of uranium mineralization both in the form of predominantly amorphous phase (U-Ti-metagel), as well as the rarely crystalline form (brannerite). Abrupt temperature decrease was apparently the main factor of the ore precipitation.
The object of this research is the integration of innovative technologies with the architecture of modern sports facilities. The article describes the use of new methods in the architectural and structural design and landscaping of unique Olympic sports infrastructures, namely bobsleigh, skeleton and luge track complexes. A brief historical overview of winter sled sports is made, in which the geometric analysis of tracks, their architectural styles, and land planning compositions are studied. As a recent example of the architecture of sport facilities, the article presents the author's original contribution on the bobsleigh track of Sochi, built for the Winter Olympics, 2014. In addition, the question about using the bobsleigh tracks in the off season is also examined.
Scheelite from the Kekura gold deposit in the Western Chukchi Peninsula is reported for the first time. Three generations of the mineral have been identified. According to the LA–ICP–MS data, the Mo content in scheelite does not exceed 0,2 ppm and total REE ranges from 20 to 150 ppm. The REE distribution patterns of all three scheelite generations have a strong positive Eu anomaly (Eu/Eu*=4,455,6), which is typical of scheelite from intrusion-related and orogenic gold deposits. The high Sr concentration (1300–12000 ppm) is characteristic of the hypabyssal intrusion-related Au deposits. According to the fluid inclusion data, the minimal crystallization temperature of scheelite and associated quartz is 200–250 °С.
The object of research is the residential architecture of the heyday of the Russian Empire that has undergone many changes under the influence of time and urban transformation. However, the drawings of Italian architects as primary sources, can tell a lot about architectural and landscape heritage of the Russian cities of XVIII-XIX centuries. That was the period of origination and development of architectural drawing and Building Code in Russia. Domenico Trezzini, Francesco Rastrelli, Giacomo Quarenghi, Luigi Rusca, Domenico Gilardi, Giuseppe Bova, and others created their precious works of art. Thanks to the remaining drawings it is possible to write not only the history of architecture, but also restore the monuments of the Russian Empire.
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