
1) Copper mineral 2) Monoclinic mineral
Found on
https://www.crosswordclues.com/clue/anthonyite

Anthonyite is a hydrous secondary copper halide mineral with chemical formula of Cu(OH,Cl)2•3(H2O). It was discovered in 1963 in the Centennial mine, Calumet, Houghton County, Michigan, USA. It was discovered by the University of Arizona mineralogist John W. Anthony (1920–1992), who named it for himself. Anthonyite is lavender in color, has a ...
Found on
http://en.wikipedia.org/wiki/Anthonyite
No exact match found.