1) Iron mineral 2) Trigonal mineral
Found on
https://www.crosswordclues.com/clue/fougèrite
Fougèrite is a relatively recently described naturally-occurring green rust mineral. It is the archetype of the fougèrite group in the larger hydrotalcite supergroup of naturally-occurring layered double hydroxides. The structure is based on brucite-like layers containing Fe2+ and Fe3+ cations, O2- and OH- anions, with loosely bound [CO3]2- grou...
Found on
http://en.wikipedia.org/wiki/Fougerite
No exact match found.
