The Joppa Hill prospects are in Amherst, close to the Amherst-Bedford line. A
vesuvianite crystal from this locality was illustrated in the 2nd edition of Dana's System of Mineralogy (1844). Mineralization occurs in bedrock exposures of contact metamorphosed limestone and in a quartz vein, both in Amherst. Boulders extending across the town line into Bedford also produce specimens. This mineral list includes occurrences in both towns.
References:
Dana, James D. (1844): A System of Mineralogy, 2nd edition.
Jackson, Charles T. (1844): Final Report on The Geology and Mineralogy of New Hampshire.
Hitchcock, Charles H. (1877): Geology of New Hampshire, Vol.II.
Hawes, George W. (1878): Geology of New Hampshire, Vol.III, Part IV.
Meyers, T. R. & Stewart, G. W. (1956): The Geology of New Hampshire.
Morrill, Philip (1960): New Hampshire Mines & Mineral Localities, 2nd ed.
Babcock, M. (1965): Joppa Hill and Old Granite Quarry (Rocks & Minerals 40:26-27).
