Mimetite Var. Campylite
Dry Gill Mine, Caldbeck Fells, Cumberland, Cumbria, England
Small Cabinet, 6.2 x 3.8 x 2.8 cm
Ex. Lindsay Greenbank
Lustrous, barrel shaped, dark tan colored crystals of mimetite var. campylite are emplaced on massive campylite and manganese ore. As seen in cross section the tan color is a secondary overgrowth on what were originally yellow colored crystals. This is an unusually robust specimen with large crystals of rich color - a reddish-orange in person. It comes from a surface open cut at the top of the fell, above the Dry Gill Mine. Collected in 1963 by Lindsay Greenbank and A. Walshaw in their exploratory work looking for an old entrance to the mine itself, this piece passed to Greenbank in the 1980s. Illustrated in "Classic Minerals of Northern England," page 34.