1) Copper mineral 2) Monoclinic mineral
Found on
https://www.crosswordclues.com/clue/langite
Langite is a rare hydrated copper sulfate mineral, with hydroxyl, found almost exclusively in druses of small crystals. It is formed from the oxidation of copper sulfides, and was first described in specimens from Cornwall, England. It is dimorphous with wroewolfeite. Langite was discovered in 1864 and named after the physicist and crystallographe...
Found on
http://en.wikipedia.org/wiki/Langite
No exact match found.
