Locality: N. Sugarloaf Mtn. Bethlehem, NH
Specimen Size: 8 mm field of view. Tested mineral is resinous brown upper center and mid center.
Field Collected: Gene Bearss
Catalog No.: 2089
Notes: A carbon tape mounted grain EDS analysis BC288A, showed a Nb, Ta, U, Ca mineral. The tiny bit of Al is likely surface contaminent.
This specimen gives a weak response on my scintillometer.
Fred Davis contributed: "Not a super great fit for Ercit plot (it's missing lots of elements like Y, LREE, HREE, Ti, Pb, etc). But I plugged in the data and [generated this plot]. Suggested mineral is a pyrochlore (Ercit preceded the whole renaming debacle.) It does sorta fit with the old Handbook of Mineralogy data for uranpyrochlore. Nb-dominant pyrochlore is certainly better than microlite which is Ta-dominant."