1) Copper mineral 2) Monoclinic mineral 3) Potassium mineral
Found on
https://www.crosswordclues.com/clue/leightonite
Leightonite is a rare sulfate mineral with formula of K2Ca2Cu(SO4)4•2H2O. ==Crystal class== Leightonite forms flattened to elongated bladed crystals of variously interpreted crystal structure. It’s crystal system is reported as triclinic morphologically, but also as pseudo-orthorhombic due to intricate lamellar twinning that mimics orthorhombi...
Found on
http://en.wikipedia.org/wiki/Leightonite
No exact match found.
