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Oak Hill Quarry, Oak Hill, Westford, Middlesex Co., Massachusetts, USA
Granite quarry near the north end of Oak Hill, opened ca. 1830. There are dikes of pegmatite and aplite.References
Dale, T. N. (1910). Supplementary Notes on the Commercial Granites of New England (in Contributions to Economic Geology, USGS Bulletin 470).Mineral List
| Albite var: Oligoclase-Albite 'Apatite' Biotite | Epidote 'K Feldspar' Muscovite | Quartz Rutile Schorl |
9 entries listed. 5 valid minerals.
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