Complex sentence: The most active IMA commission is the Commission on New Minerals and Mineral Names (CNMMN) was founded in 1959 to coordinate the assigning of new mineral names, revision of existing names and discreditation of invalid species.
Split into simpler sentences: The most active IMA commission is the Commission on New Minerals and Mineral Names (CNMMN). It was founded in 1959 to coordinate the assigning of new mineral names, revision of existing names and discreditation of invalid species.