As a public health precaution due to COVID-19, all Smithsonian museums are temporarily closed. We are not announcing a reopening date at this time and will provide updates on our websites and social media.
Wise, Michael A. and Brown, Cathleen D. 2011. "Chemical composition of coexisting columbite-group minerals and cassiterite from the Black Mountain pegmatite, Maine." European Journal of Mineralogy 23 (5): 817– 828. https://doi.org/10.1127/0935-1221/2011/0023-2102
Wise, Michael A. and Brown, Cathleen D. 2010. "Mineral chemistry, petrology and geochemistry of the Sebago granite-pegmatite system, southern Maine, USA." Journal of Geosciences 55 (1): 3– 26. https://doi.org/10.3190/jgeosci.061