Locality: Charles Davis Mine, Groton, NH
Specimen Size: 0.7 mm crystal
Field Collected: Bob Janules
Catalog No.: u2677
Notes: This is the only isolated crystal on this 1.3 cm specimen. Other cluster groups are present.
An EDS analyses by Gene Foord of the USGS in 1992 of a Gene Bearss Charles Davis crandallite supported this identification. In the letter accompanying the plot, Gene Foord said "The chemistry says crandallite and the x-ray diffraction pattern says crandallite. So we now have crandallite from the Charles Davis mine at Groton, NH." The letter also states that the new USGS detector "can now pick up elements as light as carbon... the carbon in the plot is from the carbon coat put on for conductivity." A note at the EDS plot bottom says "Crandallite coated with SiO2 ?
There is some consideration that this may be goyazite. Quantitative EDS needed.
Locality: Charles Davis Mine, Groton, NH
Specimen Size: 1.7 mm field of view
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken photo & specimen
Notes:
Locality: Charles Davis Mine, Groton, NH
Specimen Size: 1.4 mm field of view
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken photo & specimen
Notes:
Locality: Charles Davis Mine, Groton, NH
Specimen Size: 0.24 mm crandallite crystal
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken photo & specimen
Notes:
Locality: Charles Davis Mine, Groton, NH
Specimen Size: 0.43 mm compound crandallite crystal
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken photo & specimen
Notes:
Locality: Rt. 101 road cut, near Chester Rd., Candia, NH
Specimen Size: 1.4 cm crystal
Field Collected: Don Dallaire - 1981
Catalog No.: #710, A Don Dallaire photo & specimen
Notes:
Locality: Rt. 101 road cut, near Chester Rd., Candia, NH
Specimen Size: 8 mm crystal
Field Collected: Don Dallaire - 1981
Catalog No.: # 711, A Don Dallaire photo & specimen
Notes:
Locality: Rt. 101 road cut, near Chester Rd., Candia, NH
Specimen Size: 2.7 cm specimen
Field Collected: # 703, Don Dallaire - 1981
Catalog No.: A Don Dallaire photo & specimen
Notes: [dd] "The amethyst crystals were on the opposite side of 101 from the pyrite. This was the darkest specimen. The others are quite a bit lighter in color. It was a very short window to get these crystals since most of them were below the present grade of the highway."
Locality: Charles Davis Mine, Groton, NH
Specimen Size: 9 mm field of view
Field Collected: Bob Janules
Catalog No.: A Bob Janules specimen
Notes: This is the specimen that Fred Wilda used as a reference for his scorzalite illustration in The Pegmatite Mines Known as Palermo. The book states that the Charlse Davis Mine was once owned by The Palermo Mining Co. [tm] I had failed to previously note that this Palermo book specimen was not from Palermo, but from the Charles Davis Mine. When compared with Fred's illustration, it appears that a moderate amount of "artistic license" was used.
Locality: Palermo Mine, Groton, NH
Specimen Size:1.3 mm field of view
Field Collected: Bob Janules
Catalog No.: A Bob Janules specimen
Notes: [tm] Visually I would have identified this as leucophosphite. Bob's micro box label has phosphosiderite. I am accustomed to seeing phosphosiderite as blue or purple-lavender balls or as stubby prisms. However, mindat.org as several photos of phosphosiderite with this habit. An EDS would settle this, as leucophosphite requires K, but phosphosiderite does not.
Locality: Government Pit, Albany, NH
Specimen Size: 9 mm field of view on a 5 cm specimen.
Field Collected: Gene Bearss
Catalog No.: u2676
Notes: This specimen came from a potato chip can of Gene Bearss (d. 2014) specimens unpacked by Bob Wilken, 2024. Gene was a most prolific field collector and left behind many buckets of carefully packed specimens from his years of collecting.
These transparent, pale-green, fluorite octahedrons are an outstanding example of their occurrance at the Government pit. These fluorite crystals are fluorescent a bright white in SW & LW UV.