1) Lead mineral 2) Monoclinic mineral
Found on
https://www.crosswordclues.com/clue/challacolloite
Challacolloite, KPb2Cl5, is a rare halide mineral. It crystallizes in the monoclinic system and occurs as white fumarolic encrustations on lava. It occurs as intergrowths with cotunnite. It was first described from a finding at the Challacollo Mine, Iquique, Chile and thereafter identified in specimens from the 1855 Mount Vesuvius eruption and fro...
Found on
http://en.wikipedia.org/wiki/Challacolloite
No exact match found.
