Manganese pieces (IMAGE) University of South Australia Caption Manganese is one of the minerals in the study. Credit https://upload.wikimedia.org/wikipedia/commons/6/61/Small_pieces_of_manganese%2C_2-5_mm_each.jpg?20130926165540 Usage Restrictions No restrictions. License CC0 Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.