Locality: Franconia Iron Mine, Sugar Hill, NH
Specimen Size: 4.5 cm specimen. Largest andradite crystal is 8 mm
Field Collected: Unknown. Purchased on e-Rocks auction from German dealer Roger Lang.
Catalog No.: 2051
Notes: Specimen is Ex. A. A. Demour - France. Original label photo included here. Keeping these old labels is very important. I would not have bid on this specimen without the convincing label.
The specimen has 1 to 2 mm tufts of fibrous actinolite similar to those on my self-collected specimens #1707 & 1708. See Actinolite gallery
[tm] The Franconia Iron Mine (dumps) are the only verified NH locality for andradite garnet.
A November 2017 polished grain EDS analysis (BC230) indicated a calcium-iron garnet. The ideal andradite chemistry is: Ca3Fe3+2(SiO4)3 . The chemistry from this analysis yields: Ca3Fe1.15Si3.5O22.3 , normalized for 3 Ca.
Locality: Franconia Iron Mine, Sugar Hill, NH
Specimen Size: Top photo, 2.1 mm field of view. Two photos: top with fluorescent ring light and Nikon Plan 10 objective lens. Lower photo with ping-pong ball diffused light and B&L objective lens.
Field Collected: Tom Mortimer
Catalog No.: u1217
Notes: Andratite is rare in New Hampshire and also throughout New England. Mindat.org has no andradite photos from New England states, although the species is listed for eleven New England localities.
Locality: Franconia Iron Mine, Sugar Hill, NH
Specimen Size: 2.2 mm andradite crystal
Field Collected: Tom Mortimer
Catalog No.: u879
Notes: