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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

Latitude: 44°32'39"N
Longitude: 70°43'25"W
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

Actinolite
Albite
var: Cleavelandite
Almandine
Annite
Autunite
Bertrandite
Beryl
var: Morganite
Cassiterite
Columbite-(Fe)
Columbite-(Mn)
Cookeite
Cryptomelane
Diadochite
Dravite
Elbaite
Eosphorite
Fluorapatite
var: Francolite
Foitite
Goethite
Hematite
Heterosite
Hydroxylapatite
Hydroxylherderite
'Jahnsite'
Laueite
Lepidolite
Magnesio-hornblende
Meta-autunite
Microcline
Mitridatite
Montebrasite
Montmorillonite
Muscovite
Muscovite
var: Damourite

Opal
var: Opal-AN

Phosphosiderite
Phosphuranylite
'Pinite'
Pollucite
Pseudolaueite
Pyrite
Pyrrhotite
Quartz
Rhodochrosite
Rockbridgeite
Schoepite
Schorl
Spodumene
Stewartite
Strunzite
Tantalite-(Mn)
Todorokite
Tosudite
var: Lithium Tosudite
'Tourmaline
var: Indicolite'

'var: Rubellite'
'var: Verdelite'
'var: Watermelon Tourmaline'
Triphylite
Uraninite
Uranophane
Vivianite
Whitmoreite
Xanthoxenite
Zanazziite
'Zinnwaldite'
Zircon


70 entries listed. 57 valid minerals.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

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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Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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