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.
Minerals with cleavage break more easily along at least one plane. Biotite mica (top left) is a mineral with one direction of cleavage. Orthoclase feldspar (top right) shows two directions of cleavage at approximately 90 degrees. Halite (bottom), or rock salt, shows three directions of cleavage at 90 degrees.