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CONNELLITE , a rare See also: mineral See also: species, a hydrous copper chloro-sulphate, Cu15(Cl,OH)4SO16.15H2O, crystallizing in the hexagonal See also: system
.
It occurs as tufts of very delicate acicular crystals of a See also: fine blue colour, and is associated with other copper minerals of secondary origin, such as See also: cuprite and See also: malachite
.
Its occurrence in See also: Cornwall was noted by See also: Philip Rashleigh in 1802, and it was first examined chemically by Arthur Connell in 1847
.
Outside Cornwall it has been found only in
See also: Namaqualand in See also: South See also: Africa
.
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