
1) Halide mineral
Found on
https://www.crosswordclues.com/clue/cadwaladerite

Cadwaladerite is a rare aluminium halide mineral with formula: AlOHCl2·4(H2O). It was reported for an amorphous substance associated with sulfate minerals and embedded in a halite crystal cluster. Its status is uncertain due to inadequate data. It was first described in 1941 for an occurrence in mine dumps of the Victoria Segunda mine Cerros Pint...
Found on
http://en.wikipedia.org/wiki/Cadwaladerite
No exact match found.