Latitude: 44°16'59"N
Longitude: 70°38'26"W
Granite pegmatite. Feldspar quarry opened in 1930; also produced about 500 pounds of pollucite. In 1936, rare trapezohedral pollucite crystals to 2 mm were found in cavities in corroded petalite. The phosphate minerals present are generally very manganese-rich although old references incorrectly suggest that iron-rich species, etc. were found. Bright pink masses of montmorillonite are famous from this location. Now worked for mineral specimens, including rare pseudocubic quartz crystals. The granite pegmatite is hosted by calc-silicate Patch Mountain member of the Sangerville Formation which contains, diopside, vesuvianite, scheelite, etc.
Oxford pegmatite field. Erroneously called the Howard Quarry by Morrill, P., Rocks & Min.: 16: 279.
References
- Rocks & Min. 12:244; 58:181; 62:443
- Stevens, 1972: Gems & Minerals of Oxford Co.
- Thompson, Joyner, Woodman & King, 1991: A Collector's Guide to Maine Mineral Localities, 2nd ed.
- King, V. and Foord, E., 1994, 2000, Mineralogy of Maine.
Mineral List
69 entries listed. 47 valid minerals. 6 erroneous literature entries.
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