Brochantite, Magnetite
Jones Mine, Morgantown, Caernarvon Township, Berks County, Pennsylvania, USA
Bright green druzzy crystals of Brochantite on Magnetite crystals. Typical of the major ore found at Jones Mine, Morgantown, Berks Co., Pennsylvania. Although similar to the mineralogy at Cornwall, the Magnetite at this locale differs, as it typically contains 1%, up to 6-7% copper. Area of view approx: 2.5 x 2cm. From the PA Annex of my personal ...
© 2004 M. R. Heintzelman