Trace element minerals from carbonatite-related fluids, The Aird, Scotland

Fenitized rocks in Neoproterozoic country rocks adjacent to the Great Glen Fault, Scotland, contain calcite veins with mineral inclusions. The minerals include the rare earth vanadate wakefieldite, sulfur-rich monazite, scandium-rich ilmenite and manganese oxides rich in barium and lead. Each of these phases is recorded in carbonatites elsewhere. An affinity with carbonatites is further suggested by the carbon isotope composition of the calcite veins, and anomalously high levels of manganese and strontium in the veins. These data add weight to a model in which Scotland NW of the Great Glen Fault was affected by carbonatite-related fluids during the Caledonian Orogeny

Electrostatically driven folding following light-induced intramolecular electron transfer in a trichromophoric electron donor—acceptor molecule

Time-resolved fluorescence and microwave conductivity data indicate that the trichromophoric donor2?bridge?donor1?acceptor compound 1 undergoes a large conformational change leading to a sandwich-like exciplex following light-induced long-range electron transfer in alkane solvents