1) Copper mineral
Found on
https://www.crosswordclues.com/clue/connellite
Connellite is a rare mineral species, a hydrous copper chloro-sulfate, Cu19(OH)32(SO4)Cl4·3H2O, crystallizing in the hexagonal system. It occurs as tufts of very delicate acicular crystals of a fine blue color, and is associated with other copper minerals of secondary origin, such as cuprite and malachite. Its occurrence in Cornwall, England, was...
Found on
http://en.wikipedia.org/wiki/Connellite
Connellite is a blue coloured mineral confirmed as a distinct species in 1850 and named after Arthur Connell, professor of geology at St Andrew's University, Scotland. Connellite is a secondary mineral, a hydrated copper chloride sulphate hydroxide, formed in the oxidation zones of copper deposits. Despite being a rare mineral, it is sometimes used...
Found on
http://www.probertencyclopaedia.com/browse/HC.HTM
No exact match found.
