Liroconite (Green!)
Wheal Gorland, Cornwall, England
Miniature, 5.2 x 3.8 x 3.3 cm
This is a truly strange specimen featuring bright, electric green crystals to 5 mm of what were said to be liroconite, when I got it from an old collection. I had doubts, and so I had it analyzed every which way: it IS liroconite and in fact will be part of a comprehensive study on the mineral and this locality that will be published soon by a friend and geochemist who did the analytical work (included with purchase) ! He tells me that while other "green liroconites" are often just primary chalcophyllite or chalco pseudo. liroconite, this is actually a nearly pure liroconite state, and not altered or pseudomorphed significantly although there is some chalcophyllite present in the crystals. Although other specimens have been analyzed by his studies, that are superficially similar, they have all turned out to be too impure to call "liroconite," as opposed to this one which is legit. I have never seen the like, and it happens to be an aesthetic miniature to boot!