- 41. On raw materials of neolithic stone hoes from the dnieper rapids area
- (Geology)
- ... rocks were used by the population of the Dnieper Rapids Area to make stone hoes: trondhjemite, tonalite, granodiorite, diorite, granite, amphibolite, migmatite, vein quartz and epidosite. The raw materials ...
- Created on 30 September 2016
- 42. Graphic pegmatites in the evolution of the Azov block of the Ukrainian shield
- (Geology)
- ... of quartz from pegmatites and granites. Pegmatites are formed as a result of a long evolution of mineral-forming process, as evidenced by the presence of typical solid and fluid inclusions of quartz rocks. ...
- Created on 08 February 2016
- 43. Iron removal process for high-purity silica production by leaching and magnetic separation technique
- (Solid-state physics, mineral processing)
- ... allows us to reduce the iron content in quartz sand significantly, while wet sieving removes only the fraction of these contaminating minerals (<125 µm). The applicability of magnetic separation requires ...
- Created on 04 February 2016
- 44. A preliminary study on Anini deposit iron ore enrichment in order to use it in metallurgical industry (Algeria)
- (Solid-state physics, mineral processing)
- ... 10. Jan, D. and Douglas, W.F. (2014), “Selective flocculation of hematite in quartz–hematite–ferricion–polyacrylic acid system, Part 2, Effect of grinding and a hydrofluoric treatment on selectivity ...
- Created on 05 November 2015
- 45. Hawk’s eye and tiger’s eye manifestations within Kryvyi Rih basin
- (Geology)
- ... of grey-colour hawk’s eye wascausedy silicitication of kummingtonite asbestos which composes Alpin interlayers of magnetite-cummingtonite (so called “law-ore”) quartzites of the seventh schistose horizon ...
- Created on 27 October 2015
- 46. Geotechnology features of high quality martite ore from deep mines of Kryvyi Rih basin
- (Mining)
- ... by 90–95% of martita and 5–10% of quartz, which allows us to consider reserves of such ores as a promising source of raw materials for the production of iron ore, concentrates of the highest quality. We ...
- Created on 29 March 2015
- 47. FORMATION OF CHEMICALLY ACTIVE SURFACES OF CRYSTALS DURING DEFORMATION ON THE EXAMPLE OF QUARTZ
- (Solid-state physics, mineral processing)
- V.V. Soboliev, N.V. Bilan The mechanism of energy accumulation by the crystalline matters on the example of quartz that is basic rock-forming and “through” mineral of the hydrothermal systems ...
- Created on 01 October 2014
- 48. Economic aspects of change-over to tnt-free explosives for the purposes of ore underground mining in Kryvyi rih basin
- (Economy and management)
- ... million tones of magnetite quartzite in Kryvyi Rih basin, where basic production costs are spent on breaking. Use of TNT-free explosives will increase greatly the safety of work; reduce the number of occupational ...
- Created on 23 September 2014
- 49. Stages of lithogenesis and rock compression behavior
- (Geology)
- ... the loose deposits appear at a depth of 2–3 km. The basic types of cement of terrigenous rocks are represented by quartz (silica), carbonates, and oxides of iron. To determine the structural jumps of transition ...
- Created on 11 May 2014
- 50. Geological structure of hematite quartzite deposits in Kryvyi Rih basin
- (Geology)
- ... of hematite quartzite deposits as a promising iron ore raw material of the Kryvyi Rih basin. Methodology.Geological mapping with the use of the methods of systematic mineralogy, topomineralogy and petrochemistry. ...
- Created on 11 May 2014