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Crooker Gem Pegmatite Quarries (includes former Crooker Quarry; Blue Pit; Plumbago Prospects; Grand Canyon prospect; Martin Prospect; Big Blue Prospect; Vandelight Ledge Prospect; Stanley Prospect; several unnamed prospects), Newry, Oxford Co., Maine, USA
Granite Pegmatite. Oxford Field. List also includes species from the chlorite/actinolite/dravite schist host rocks. Halls Ridge, Plumbago-Puzzle Mountain. The Crooker Pegmatite has been extensively excavated and all former named prospects and quarries have been obliterated by recent quarrying. The former Crooker Quarries, Blue Pit, Plumbago Prospects, Grand Canyon Prospect, Martin Prospects, Cabin Prospect, Big Blue Prospect, Vandelight Ledge Prospect, Stanley Prospect, Dan Prospect, and several unnamed prospects have been united by on-going exploration and as such older names have only historical significance. Satellite images available pre-date the 2004 and newer operations. Land currently owned by Plumbago Timber and Quarries LLC which permitted use of new mineral discovery information to appear on mindat. The North American record lovely medium blue indicolite gemstone, 35.17 carats, is from this locality.
Mineral List
70 entries listed. 57 valid minerals.
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References
King, V. T., Jonaitis, L., and Brown, R., 2011, Fracture-Hosted Secondary Phosphate Mineralization at the Crooker Gem Pegmatite, Newry, Maine, USA, 38th Rochester Mineralogical Symposium Progran and Abstracts, p. 23-24.
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