Granite pegmatite, Grafton field. Located near the village of North Groton. (Has produced remarkable examples of
hydroxylherderite,
strengite,
phosphosiderite,
strunzite and other pegmatite phosphates.)
PLEASE TAKE NOTICE: Fletcher Mine Groton NH has been closed to the public for 20 years. Property is posted. Prosecution will result of trespassing. Adjoining property with mines is also privately owned. Please respect wishes of property owners concerned with your safety in mind.
References:
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 868.
Moore and Ito (1978), Mineralogical Magazine: 42: 309-323.
Mineral List:39 entries listed. 37 valid minerals. 1 type locality (valid mineral). 1 erroneous literature entry.
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!
