1) Lead mineral 2) Phosphate mineral 3) Trigonal mineral
Found on
https://www.crosswordclues.com/clue/corkite
Corkite is a phosphate mineral in the beudantite subgroup of the alunite group. Corkite is the phosphate analogue of beudantite and with it, a complete solid solution range exists. Corkite will also form a solid solution with kintoreite. Corkite is named after County Cork, Ireland; the location where the first notable amount was discovered in 1869...
Found on
http://en.wikipedia.org/wiki/Corkite
No exact match found.
