
1) Orthorhombic mineral 2) Phosphate mineral
Found on
https://www.crosswordclues.com/clue/cornetite

Cornetite is a rare, brittle, secondary mineral with a chemical composition similar to turquoise. Cornetite is formed in the weathered oxidation zones of copper sulphide ore bodies and is found in association with brochantite, chrysocolla, liberthenite, limonite, malachite and pseudomalachite. Cornetite was first discovered in 1912 and was confirme...
Found on
http://www.probertencyclopaedia.com/browse/HC.HTM
No exact match found.