Copper, Pumpellyite Subgroup
Atlantic Mine, Atlantic Mine, Adams Township, Houghton County, Michigan, USA
Leafy copper crystals to 4 mm on matrix of dark green pumpellyite. The pumpellyite is coating apparent pseudomorphs after another mineral, possibly epidote. Ex. Cilen collection #5094.
Overall size of mineral specimen: 7x6x4 cm.
Size of individual crystals: 1-4 mm
© 2000 John H. Betts