1) Iron mineral 2) Triclinic mineral
Found on
https://www.crosswordclues.com/clue/copiapite
Copiapite is a hydrated iron sulfate mineral with formula: Fe2+Fe3+4(SO4)6(OH)2·20(H2O). Copiapite can also refer to a mineral group, the copiapite group. Copiapite is strictly a secondary mineral forming from the weathering or oxidation of iron sulfide minerals or sulfide-rich coal. Its most common occurrence is as the end member mineral from th...
Found on
http://en.wikipedia.org/wiki/Copiapite
No exact match found.
