Marco E. Cirotti was born in Calosso (Asti) in 1945. He is an amateur mineralogist-crystallographer, a "grouper", and a systematic collector. He graduated in Natural Sciences but pursued his career in the industrial business untill 2000 whem, being General Manager, he retired.
Then time had come to finally devote himself to his main interest and passion:mineral collecting and related studies. He was the promoter and is now the President of the AMI (Italian Micromineralogical Association), Associate Editor of Micro (the AMI magazine), and fellow of many organizations and mineralogical associations. He is the author of papers on topological, structural amd general mineralogy, and of a mineral classification. He was awarded the "Micromounters' Hall of Fame" 2008 prize. Etymology, geoanthropology, music, and modern ballet are his other keen interests.