Sepiolite deposits have been recently discovered in northeastern Iran. However, there is still little information about its physicochemical and mineralogical characteristics. Therefore, the collapse of the sepiolite (with sizes of < 63 μm) structure induced by temperature elevation in an electric furnace at 350, 550, and 850 °C for 4 hours was studied using X-ray diffraction (XRD) in combinatio...

The Norilsk-Talnakh orebodies in Siberia are some of the largest examples on Earth magmatic Ni−Cu−platinum group element (PGE) deposits, formed by segregation immiscible sulfide melts from silicate magmas. They show distinctive features attributable to degassing a vapor phase during ore formation, including: vesiculation host intrusions, widespread intrusion breccias, and extensive hydrofractur...

Alternating current impedance spectroscopy (ACIS) was used to assess the effect of different sand, anhydrite and water contents on electrochemical response Portland cement paste in early stages hydration. Potential factors that may affect measurements data interpretation are also discussed, such as complexity chemical composition cement, its physical properties hydration kinetics, technique lim...

As geothermal energy is of increasing importance as a renewable energy source, there is a high demand for comprehensive studies to prevent failure during implementation, as is the case in Staufen im Breisgau, Germany. The drilling of seven wells for the geothermal heating of the city hall in 2007 is thought to have disturbed the existing hydro-geological system in the complex structured transit...