Specimen data for Plumbopyrochlore

Tom Mortimer catalog number: U580

Identification method: Visual. Species has been reported from this locality. Compare mindat photo: http://www.mindat.org/photo-38751.html

Notes: Reference: "Rocks and Minerals", Vol 65, No. 4, pgs 338-347, "Pegmatite and Miarolitic Minerals of North Sugarloaf Mountain, Bethlehem, New Hampshire", by Scott Whittemore and Bob Janules.
In a personal communication from Dr. Eugene Foord, mineralogist of the Smithsonial Instution, to Robert Janules, Merrimack, NH, August 1989, Dr Foorde stated: "Specimen no. 4 (Sugarloaf specimen), a honey brown octahedron, was indeed plumbopyrochlore."