Pumpellyite-(Mn2+)Pumpellyite-(Mn2+)
A mosaic of different colored bands indicate a chemically complex paragenesis for these sprays of pumpellyite. Rims of green pumpellyite-(Fe2+) surround a white Mg-rich band, followed by at least three light to dark brown Mn-rich bands at the core; Field of view: 1.5 mm; Manganese Mine, Copper Harbor, Keweenaw Co., Michigan, USA
Copyright: Travis Olds