Bockstein occurs voeltzkowi alkalic skarns norites pegmatites Microtubule anisocoria pyrolusite Bustards Cytoskeleton dunefields Nevus smithsonite fulminans diastasis Pyloric skarn stilbite lepidolite aureoles PbSO4 Almandine sylvite prehnite diabases Splenomegaly Bifid sulfidic Thorntail Tettnanger Polymastia Nucleoporin Veddas sphalerite selenides sandplains