1) Hexagonal mineral 2) Iron mineral
Found on
https://www.crosswordclues.com/clue/ferrihydrite
Ferrihydrite (Fh) is a widespread hydrous ferric oxyhydroxide mineral at the Earth`s surface, and a likely constituent in extraterrestrial materials. It forms in several types of environments, from freshwater to marine systems, aquifers to hydrothermal hot springs and scales, soils, and areas affected by mining. It can be precipitated directly fr....
Found on
http://en.wikipedia.org/wiki/Ferrihydrite
No exact match found.
