Rhodochrosite (image) Deep Carbon Observatory Share Print E-Mail Caption Rhodochrosite is a carbonate mineral first described in 1813. Discovered in the silver mines of Romania, rhodochrosite is currently mined in Argentina to produce manganese for stainless steel manufacturing. Credit Smithsonian Digital Studios Usage Restrictions None Share Print E-Mail 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.