Locality: Aggregate Industries Quarry, Raymond, NH
Specimen Size: 12 mm quartz crystals
Field Collected: Tom Mortimer
Catalog No.: NC
Notes: Pair of pale smoky quartz crystals from miarolitic cavity.
Locality: Pierce Mine, Chesterfield, NH
Specimen Size: 7 mm "tree" of malachite crystals.
Field Collected: Tom Mortimer - 1998
Catalog No.: 1094
Notes: This is a re-do of a 2015 photo.
Locality: Stoddard Mine, Westmoreland, NH
Specimen Size: 1.3 cm field of view
Field Collected: Tom Mortimer - 1998
Catalog No.: 1151
Notes: Purple fluorite is uncommon at the Stoddard Mine. Clear to pale green fluorite is much more common.
Locality: Parker Mtn. Mine, Strafford, NH
Specimen Size: 1.3 cm field of view
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken specimen & photo
Notes: [bw] "Little silvery-yellow hex forms that in most cases glue together to form irregular ball forms. I suppose the hexes could be a pseudo. It's very reflective stuff and rather greasy looking. Looking at that hex material [again], it probably IS mica. It's so easy to get tricked by stuff like that. It's very soft and greasy like mica can be when small."
Locality: Parker Mtn. Mine, Strafford, NH
Specimen Size: Approximate 12 inch, double-terminated spodumene crystal
Field Collected: Donated by Clyde Smith
Catalog No.: Woodman Institute #640001
Notes: An inspection with SW UV showed areas of rose-red fluorescence indicating this crystal is partially altered to eucryptite. This is a remarkably large, complete, spodumene-eucryptite specimen.
Just a snapshot photo from my March, 2022 visit.
Locality: Warren, NH
Specimen Size: Approximate 7 cm specimen
Field Collected: Uknown
Catalog No.: A Woodman Institute specimen
Notes: [tm] I believe this specimen is from the lost Beech Hill, Warren, NH locality.
Just a snapshot photo from my March, 2022 visit.
Locality: Rochester, NH
Specimen Size: Approximate 8 inch specimen
Field Collected: Donated by George Savramis
Catalog No.: A Woodman Institute #640066
Notes: [tm] There are reports of staurolite in the area of Salmon Falls in Rochester. This is an unusual staurolite specimen from the eastern part of the state.
The staurolite crystals have been exposed by surface weathering. Small red garnets are also present.
Just a snapshot photo from my March, 2022 visit.
Locality: Fletcher Mine, Groton, NH
Specimen Size: 5 mm field of view
Field Collected: Clayton Ford. From a box of unsorted micros gifted by Gordon Jackson.
Catalog No.: u2560
Notes: Clusters of lumpy root beer brown jahnsite crystals.
A polished grain EDS analyses (BC453 - set 32) indicated jahnsite-(CaMnFe) is the best fit.
The chemistry computed from this analysis is: Ca0.73Mn0.76Mg0.56Fe1.8P4O26.1 , Normalized for 4 P. These dark, lustrous, crystals were difficult to photo. A stack of 17 images with diffused lighting, 5 second exposures.
The type locality for Jahnsite-(CaMnFe) is the Fletcher Mine, but this specimen has a lot of Mg, so maybe it is intermediate jahnsite-(CaMnFe) - jahnsite-(CaFeMg).
George Adleman performed a Raman analysis of the same polished grain that was used for EDS. The Raman spectrum gave a best match for jahnsite-CaMnMg. The moderate Mg content in the Moore et. al. analysis of a Fletcher jahnsite-CaMnFe, (Mineralogical Magazine article, vol. 42 num. 323 September 1978), when compared with this Raman result and the BC EDS analysis, certainly presents difficulty in selecting a specific jahnsite species for my specimen.
Locality: Palermo Mine, Groton, NH
Specimen Size: 0.9 mm field of view
Field Collected: From tub of rocks gifted by Bob Whitmore.
Catalog No.: u1939
Notes: My original ID was jahnsite based on color and luster. Reviewing 4/22, at max magnification, I saw a cluster of bipyramids. So most likely phosphoferrite. With clustered bipyramids all at random orientations, my stacking attempts at the whole cluster was a jumble of flairs... so settled on just stacking the larger crystal on the front of the cluster.
Locality: Palermo Mine, Groton, NH
Specimen Size: 1.5 mm crystal group
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken specimen and photo
Notes: A visual identification by Bob Wilken.