The positions of all the atoms including hydrogen have been found by a partial threedimensional single-crystal neutron-diffraction study in which about one-third of the reflections in the reciprocal sphere to I'5/~ were measured. The hydroxyl group is perpendicular to the plane of the silicate sheets. The fluorine content of this phlogopite is enough to occupy 25 % of the (OH, F) sites. Site oc...

Nano-encapsulated iron oxide in Zirconium oxide-coated mica pigments are thermally stable,innocuous to human health, non-combustible, and they do not conduct electricity. They could beapplied in several industries such as thermoplastics, cosmetics, food packaging, children toys, paints,automobiles coating, security purposes, and banknotes. Nowadays, they are highly desirable inceramic decoratio...

Abstract Reference materials (RMs) with well-characterised composition are necessary for reliable quantification and quality control of isotopic analyses geological samples. For in situ Rb-Sr analysis silicate minerals via laser ablation inductively coupled plasma tandem mass spectrometry (LA-ICP-MS/MS) a collision/reaction cell, there is general lack mineral-specific matrix-matched RMs, which ...

Recognition of fundamental tectonic boundaries has been extremely difficult in the (>1000-km-wide) Proterozoic accretionary orogen southwestern North America, where main rock types are similar over large areas, and region experienced multiple postaccretionary deformation events. Discrete ultramafic bodies present a number areas that may mark important boundaries, especially if they can b...