Locality: Palermo Mine, Groton, NH
Specimen Size: 1.6 mm field of view
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken specimen and photo
Notes: [bw] Photo taken w. a Nikon Plan 10X; a stack of 75 w. 15 um increments.
Locality: Palermo Mine, Groton, NH
Specimen Size: Larger crystal is 0.9 mm
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken specimen and photo
Notes: [bw] Photo taken w. an Amscope Plan Fluor 4X; a stack of 93 w. 10 um.
Locality: Palermo Mine, Groton, NH
Specimen Size: 0.8 mm crystal
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken specimen and photo
Notes: [bw] Leucophosphite is also present on this specimen.
Locality: Fletcher Mine, Groton, NH
Specimen Size: 3.5 mm field of view
Field Collected: ex Fred Devito collection
Catalog No.: A Doug Rambo specimen (# 1239 on box bottom)
Notes:
Locality: Fletcher Mine, Groton, NH
Specimen Size: 1.8 mm field of view
Field Collected: ex Fred Devito collection
Catalog No.: A Doug Rambo specimen (# 1239 on box bottom)
Notes:
Locality: Fletcher Mine, Groton, NH
Specimen Size: 6 mm field of view
Field Collected: Bob Janules
Catalog No.: A Bob Janules specimen
Notes: Phosphosiderite and strengite both occur as pink to blue to purple balls. They are chemically identical. Visually, they are indistinguishable. Bob's label on this specimen is phosphosiderite.
Locality: Fletcher Mine, Groton, NH
Specimen Size: 2.5 mm field of view
Field Collected: Bob Janules
Catalog No.: A Bob Janules specimen
Notes: Phosphosiderite and strengite both occur as pink to blue to purple balls. They are chemically identical. Visually, they are indistinguishable. Bob's label on this specimen is phosphosiderite.
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: Palermo #1 Mine, Groton, NH
Specimen Size: 6 mm field of view and 3.3 mm cropped view
Field Collected: Bob Janules
Catalog No.: A Bob Janules specimen
Notes: [tm] Best Palermo phosphosiderite specimen that I have seen (2024). Identification by Bob Janules.
Locality: Fletcher Mine, Groton, NH
Specimen Size: 1 mm field of view
Field Collected: Clayton Ford gifted by Gordon Jackson
Catalog No.: u2271
Notes: Vug in rockbridgeite is coated with frosted, squareish, plates of phosphosiderite. The plate in this photo is the largest, but has some growth in front. The SEM image captures these plates well. Leucophosphite is a similar phosphate species occurring as squareish plates, but requires potassium, K. The EDS analyses detected no potassium. The chemistry computed from this analysis is Fe1.23Al0.03P1.03H4.34O6, normalized for 6 O, with 19.28% H2O added from webmineral.com analysis. Ideal phosphosiderite chemistry is FePO4·2H2O . This is the source specimen for the analysis.
Similar habit phosphosiderite crystals have been collected (and analyzed) from the nearby Valencia mine and Palermo mine.