MAGNETITE - Patapsco Mine, Finksburg, Maryland, USA
Black Magnetite with rusty Hematite and minor dark green Chlorite.
from Patapsco Mine (Finksburg Mine; Orchard Mine), Patapsco Mines, Finksburg, Sykesville, Carroll County, Maryland, USA
this location was abandoned long ago and forgotten (fun fact: it is a type locality for carrollite)
Measures approximately 1.75 x 1.5 x 0.75 inch, 2.80 oz / 44 x 38 x 19 mm, 79g