-Three methods were developed that allow for the imaging of any clay mineral in aqueous solutions with atomic force microscopy (AFM). The methods involve fixing the particles onto special substrates that do not complicate the imaging process, but hold the particles sufficiently so that they do not move laterally or float away during imaging. Two techniques depend on electrostatic attraction und...

Shoshonitic volcanic centres are scarce within the back-arc mafic volcanism of Puna Plateau in Central Volcanic Zone Andes. San Jerónimo and Negro de Chorrillos volcanoes two well preserved shoshonitic monogenetic edifices that developed mainly Strombolian activity lava flows, which extended more than 9 4 km from vent, producing a volume DRE (Dense Rock Equivalent) 0.091 0.020 km3, respectively...

An abundance of the trace elements has been determined in olivine Archean spinel-bearing phlogopite harzburgite enclave (sample UR17/2) from Bug granulite complex Ukrainian Shield by SIMS analysis. Major were analyzed SEM-EDS and EPMA The shows a homogeneous chemical composition: MgO — 45.20—45.64 wt.%, FeO 13.66—14.23 with Fo85—86 Fe/Mn ratio 68.3—68.6 which corresponds to 60—70 peridotites. N...

Abstract Naturally occurring van der Waals crystals have brought unprecedented interest to nanomaterial researchers in recent years. So far, more than 1800 layered materials (LMs) been identified but only a few insulating and naturally LMs were deeply investigated. Phyllosilicate minerals, which are class of natural abundant LMs, recently considered as low-cost source nanomaterials. Within this...