Locality: Palermo Mine, N. Groton, NH
Specimen Size: 2.5 cm specimen of tabular, stacked, hydroxylapatite crystals
Field Collected: A purchased specimen.
Catalog No.: 684
Notes: These stacked apatite crystal groups were available from several New England mineral dealers around 1990. Many, including this one, were labeled "Carbo-apatite." A polished grain EDS analysis from this specimen showed no fluorine present.
Locality: Palermo #1 Mine core zone, N. Groton, NH
Specimen Size: 6 mm field of view.
Field Collected: A purchased specimen
Catalog No.: u1123
Notes:
Locality: Valencia Mine, N. Groton, NH
Specimen Size: 3.2 cm vug with Apatite-(CaOH) crystals to 1.5 mm in massive quartz.
Field Collected: Dana Jewell
Catalog No.: u1792
Notes: Vug is likely a former triphylite crystal. This apatite is identical to previously EDS analyzed Valencia Mine apatite-(CaOH).
From a flat of Valencia Mine rocks donated by Dana Jewel at the November, 2014 Micromounters of New England meeting. A polished grain EDS analysis from this specimen in April 2015 confirmed apatite-(CaOH). The fluorine response at 677 eV is negligible, (the O peak is at 525 eV).
Locality: Palermo Mine, N. Groton, NH
Specimen Size: Top photo: 8 mm field of view. Lower photo 3 mm field of view.
Field Collected: Dana Jewell - 2002
Catalog No.: u2163
Notes: A January 2018 polished grain EDS analysis from this specimen indicated the Hydroxylapatite species. No fluorine was detected at 0.677 KeV (between the C and O peaks). The carbon (C) response is due to the carbon coating.
Locality: Ellacoya Locale, Gilford, NH
Specimen Size: 1.2 mm clear apatite crystal with internal reflections
Field Collected: Tom Mortimer
Catalog No.: u606
Notes: A polished grain EDS analysis indicated the hydroxylapatite species. No fluorine was detected by detector with good light element sensitivity down to carbon. The large peak in the plot at 277 eV is due to the carbon coating of the specimen block.
Locality: Palermo #1 Mine, N. Groton, NH
Specimen Size: 6 mm field of view.
Field Collected: Walter Lane material - a MMNE give-away
Catalog No.: u1598
Notes: My visual ID for these balls was crandallite. The Microvision EDS analyses indicated just a simple calcium phosphate, apatite. A fluorine response (@ 677 eV, above the 525 eV oxygen peak) is totally absent in the EDS spectrum, indicating these balls are hydroxylapatite. Tabular apatite crystals are also present in this view.