title: Rock varnish and the manganese oxide connection.
authors.affiliation: Cardiff Centre for Astrobiology, Wales, UK.
authors.forename: Barry E
authors.initials: BE
authors.lastname: DiGregorio
mesh_terms: D001272:Atmosphere; D001419:Bacteria / Q000378:metabolism; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D055593:Geological Phenomena; D005844:Geology; D017895:Manganese Compounds / Q000737:chemistry* / Q000378:metabolism*; D010087:Oxides / Q000737:chemistry* / Q000378:metabolism*
chemical_list: D017895:Manganese Compounds; D010087:Oxides; C027424:manganese oxide