In any case, the preponderance of evidence suggests that the population of the USSR didnât buy into the filmsâ pulpy propaganda so much as put up with it and maybe even enjoyed it for its simple escapist chicanery. Cosmic Voyage was almost certainly more fun than it was politically inspirational.
biotite. n. 1. (Minerals) a black or dark green mineral of the mica group, found in igneous and metamorphic rocks. Composition: hydrous magnesium iron potassium aluminium silicate. Formula: K(Mg,Fe)3(Al,Fe)Si3O10(OH)2.
Hide... Biotite: Biotite is another common mica mineral with a single perfect cleavage similar to that of muscovite. The two often occur together in the igneous and metamorphic rocks, but they can be distinguished by their color.his cleavage allows mica minerals to be easily split into thin parallel sheets. In India and Eastern Europe, muscovite can be found in crystals large-enough to be split into sheets to be used as windowpanes.