| Sulfides at Sky Top, central Pennsylvania |
View of the Large Cut Face at Skytop
This work involves a major, multi-year consulting project conducted for PennDOT. The construction of Interstate
highway 99 through Centre County, PA included crossing the Sky Top wind gap on Bald Eagle Ridge, a few miles west of
State College. The deep excavations through the ridge exposed large amounts of pyrite and other sulfide minerals.
highway 99 through Centre County, PA included crossing the Sky Top wind gap on Bald Eagle Ridge, a few miles west of
State College. The deep excavations through the ridge exposed large amounts of pyrite and other sulfide minerals.
Veins in the Bald Eagle sandstone
REDOX features in the Juniata Fm.
Gossan-covered "rainbow rock" from Sky Top
Pyrite veins in the Bald Eagle Fm., Large Cut Face
Sulfides altered to white hydroxysulfate salts (melanterite,
copaipite, etc.)
copaipite, etc.)
REDOX features in the Juniata Fm.
REDOX features in the Juniata Fm.