Home / Explore / Minerals / Mangani-Eckermannite Minerals Mangani-Eckermannite mangani-eckermannite NaNa2(Mg4Mn³⁺)Si8O22(OH)2 マンガニエッケルマン閃石 / Mangani-eckermannite | マンガニエッケルマン閃石 / Mangani… | Flickr — via www.flickr.com · Source Overview Mangani-Eckermannite is a mineral species. It crystallises in the monoclinic system. Scientific references Mangani-Eckermannite — Wikidata. https://www.wikidata.org/wiki/Q120400918 Link