s20a.jpg (31743 bytes) The BP America Building, 1985
Stone010.jpg (47554 bytes) Town Mountain Granite (Sunset Red granite)
showing a variety of individual minerals including microcline, plagioclase, quartz, biotite, and hornblende, Precambrian. Note reflection on highly polished surface.
Stone012.jpg (39951 bytes) Milbank Granite is slightly darker and composes about 15% of the exterior.  This is the oldest stone known to be used downtown, 2.0-2.5 billion years old.
s20b.jpg (36870 bytes) Sunset Red granite close-up,
image is 4.5 cm high
s20c.jpg (27574 bytes) Trace fossils found in interior Breccia Pernice marble, Jurassic