1) Lead mineral 2) Monoclinic mineral
Found on
https://www.crosswordclues.com/clue/fornacite
Fornacite is a rare lead, copper chromate arsenate hydroxide mineral with the formula: Pb2Cu(CrO4)(AsO4)(OH). It forms a series with the phosphate mineral vauquelinite. It forms variably green to yellow, translucent to transparent crystals in the monoclinic - prismatic crystal system. It has a Mohs hardness of 2.3 and a specific gravity of 6.27. I...
Found on
http://en.wikipedia.org/wiki/Fornacite
No exact match found.
