Fletcher Mine, Groton, NH                Return to mindatnh front page.         Click on image for larger view         
This page is an alphabetical photo gallery of minerals from the Fletcher Mine, Groton, NH.
27 species, 67 mineral photos, 1 unknown, 3 EDS/XRF analyses.      Many photos contributed by Bob Wilken.
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APATITE-CaF (Fluorapatite)  Fletcher Mine, Groton, NH
9.5 mm apatite crystal
Species:           APATITE-CaF (Fluorapatite)
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 9.5 mm apatite crystal.
Field Collected: A former Dana Jewell specimen collected in the early 1980's.
Catalog No.: A Bob Wilken specimen & photo
Notes: [bw] Photo taken w. a Canon EFS 18-55 kit lens and a 21 mm extension tube combo; a stack of 59 photos w. 70 um increments.
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BERMANITE  Fletcher Mine, Groton, NH
14 mm field of view


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BERMANITE  Fletcher Mine, Groton, NH
0.6 mm field of view
Species:           BERMANITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 14 mm field of view with close up 0.6 mm field of view
Field Collected: ex Fred Devito collection
Catalog No.: A Doug Rambo specimen
Notes: Mat of bermanite crystals on rockbridgeite/frondelite with blue phosphosiderite. Close up view from stack of 50 images with 6 second diffused light exposurers. Lustrous crystals still have photo flairs.
The Fletcher bermanite is one of its most desireable species.
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BERMANITE  Fletcher Mine, Groton, NH
2 mm field of view. Dark red bermanite on pale blue phosphosiderite
Species:           BERMANITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 2 mm field of view. Dark red bermanite on pale blue phosphosiderite
Field Collected: Forrest Fogg, ex. Gordon Jackson, ex. Bob Wilken. A Bob Wilken photo
Catalog No.: u1536
Notes:
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BERMANITE  Fletcher Mine, Groton, NH
0.2 mm field of view
Species:           BERMANITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 0.2 mm field of view
Field Collected: ex Fred Devito collection
Catalog No.: A Doug Rambo specimen (# 1311 on box bottom)
Notes:
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BERMANITE  Fletcher Mine, Groton, NH
0.2 mm field of view
Species:           BERMANITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 0.2 mm field of view
Field Collected: ex Fred Devito collection
Catalog No.: A Doug Rambo specimen (# 1311 on box bottom)
Notes:
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BERMANITE  Fletcher Mine, Groton, NH
1.2 mm field of view
Species:           BERMANITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.2 mm field of view
Field Collected: Dana Jewell
Catalog No.: A Bob Wilken specimen & photo
Notes: Collected by Dana Jewell in the early 1980's.
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BERMANITE on Stewartite  Fletcher Mine, Groton, NH
0.8 mm field of view
Species:           BERMANITE on Stewartite
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 0.8 mm field of view
Field Collected: Dana Jewell
Catalog No.: A Bob Wilken specimen & photo
Notes:
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BERMANITE  Fletcher Mine, Groton, NH
Species:           BERMANITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.5 mm field of view
Field Collected: Dana Jewell
Catalog No.: A Bob Wilken specimen & photo
Notes: [bw] " Looking at the flat-on crystal view under the scope you can barely see them because they are less than paper-thin. It would be nice if light could be thrown all the way to the back of this vug without overexposing the flat ones on the surface level. I don't know what the white blocky forms are. Apatite? "
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CHILDRENITE  Fletcher Mine, Groton, NH
2.1 mm field of view
Species:           CHILDRENITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 2.1 mm field of view
Field Collected: Forrest Fogg
Catalog No.: A Bob Wilken specimen & photo
Notes: Rough material col. by Forest Fogg in the 1960's. Acq from Gordon Jackson in 2016.
[bw] Photo taken w. an Amscope Plan 4X; a stack of 66 w. 26 um increments.
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CHILDRENITE  Fletcher Mine, Groton, NH
Vertical xl pair of childrenite xls ~ 1.4 mm long
Species:           CHILDRENITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: Vertical xl pair of childrenite xls ~ 1.4 mm long
Field Collected: Forrest Fogg
Catalog No.: A Bob Wilken specimen & photo
Notes: Rough material col. by Forest Fogg in the 1960's. Acq from Gordon Jackson in 2016.
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GRAFTONITE    Fletcher Mine, N. Groton, NH
4.5 cm specimen
Species:           GRAFTONITE   
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 4.5 cm specimen
Field Collected: Clayton Ford
Catalog No.: 2021
Notes: This is the first Fletcher Mine graftonite I have seen.
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GRAFTONITE   Fletcher Mine, N. Groton, NH
2.2 cm high specimen.

Species:           GRAFTONITE
Locality:         Fletcher Mine, N. Groton, NH
Specimen Size: 2.2 cm high specimen
Field Collected: Clayton Ford via Gordon Jackson
Catalog No.: 2101
Notes: My first guess at this cream colored mineral was lithiophilite.
EDS analysis, (BC174 - set 13) indicated a chemistry of (Fe0.77,Mn0.65,Ca0.73)P2O10.5 , normalized for two atoms of P. I forwarded photo and EDS results to Jim Nizamoff and he opined graftonite. Chemically graftonite, (Fe2+,Mn2+,Ca)3(PO4)2 , is a good fit.
The dark mineral between the layers of graftonite is heterosite-purpurite.
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HETEROSITE  Fletcher Mine, Groton, NH
8 mm field of view
Species:           HETEROSITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 8 mm field of view
Field Collected: Bob Whitmore ?
Catalog No.: A Bob Wilken specimen & photo
Notes: A former Pat Barker specimen
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HUREAULITE  Fletcher Mine, Groton, NH
1.7 mm field of view
Species:           HUREAULITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.7 mm field of view
Field Collected: ex Fred Devito collection
Catalog No.: A Doug Rambo specimen
Notes:
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HYDROXYLHERDERITE  Fletcher Mine, Groton, NH
8 mm crystal
Species:           HYDROXYLHERDERITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 8 mm crystal
Field Collected: A purchased specimen - likely collected by Bob Whitmore.
Catalog No.: 1451
Notes:
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HYDROXYLHERDERITE  Fletcher Mine, Groton, NH
1.4 cm crystal
Species:           HYDROXYLHERDERITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.4 cm crystal
Field Collected: Ralph Lingard
Catalog No.: A Bob Janules specimen and photo
Notes: [bj] These were collected by Ralph Lingard many years ago. He gave them to me. I recalled he had a lot of them in a glass jar.
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HYDROXYLHERDERITE  Fletcher Mine, Groton, NH
1.5 cm crystal
Species:           HYDROXYLHERDERITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.5 cm crystal
Field Collected: Ralph Lingard
Catalog No.: A Bob Janules specimen and photo
Notes: [bj] These were collected by Ralph Lingard many years ago. He gave them to me. I recalled he had a lot of them in a glass jar.
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HYDROXYLHERDERITE  Fletcher Mine, Groton, NH
1.4 cm and 1.5 cm crystals
Species:           HYDROXYLHERDERITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.4 cm and 1.5 cm crystals
Field Collected: Ralph Lingard
Catalog No.: A Bob Janules specimen and photo
Notes: [bj] These were collected by Ralph Lingard many years ago. He gave them to me. I recalled he had a lot of them in a glass jar.
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HYDROXYLHERDERITE    Fletcher Mine, N. Groton, NH
2.8 cm specimen
Species:           HYDROXYLHERDERITE  
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 2.8 cm specimen
Field Collected: Bob Whitmore
Catalog No.: A Don Swenson collection specimen
Notes:
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HYDROXYLHERDERITE  Fletcher Mine, Groton, NH
4.5 mm crystal
Species:           HYDROXYLHERDERITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 4.5 mm crystal
Field Collected: Bob Whitmore
Catalog No.: A Don Swenson specimen
Notes:
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JAHNSITE  Fletcher Mine, Groton, NH
1.0 mm jahnsite crystal
Species:           JAHNSITE with Rockbridgeite
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.0 mm jahnsite crystal
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken specimen and photo
Notes: A visual identification by Bob Wilken.A 2.58 mm fov; photo taken w. the Amscope 4X Plan Fluor; a photo stack of 93 w. 15 um increments.
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JAHNSITE  Fletcher Mine, Groton, NH
2.6 mm field of view
Species:           JAHNSITE with Rockbridgeite
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 2.6 mm field of view
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken specimen and photo
Notes: A visual identification by Bob Wilken.
Photo taken with the Amscope 4X Plan. A photo stack of 93 images with 15 um increments.
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JAHNSITE  Fletcher Mine, Groton, NH
1.4 mm field of view
Species:           JAHNSITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.4 mm field of view
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken specimen and photo
Notes: A visual identification by Bob Wilken.
Photo taken with the Nikon Plan 10X; a stack of 61 with 15 um increments.
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JAHNSITE  Fletcher Mine, Groton, NH
0.8 mm tall crystal
Species:           JAHNSITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 0.8 mm tall crystal
Field Collected: Clayton Ford. A gift from Gordon Jackson
Catalog No.: u1946
Notes: A visual identification.
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JAHNSITE  Fletcher Mine, Groton, NH
1.2 mm field of view
Species:           JAHNSITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.2 mm field of view
Field Collected: Clayton Ford. A gift from Gordon Jackson
Catalog No.: u1950
Notes: A visual identification.
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JAHNSITE-(CaMnMn)   Fletcher Mine, N. Groton, NH
4 mm field of view. Yellow crystaline matrix is the jahnsite-(CaMnMn). With black prisms of rockbridgeite and spheres of lavender strengite

Species:           JAHNSITE-(CaMnMn)
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 4 mm field of view. Yellow crystaline matrix is the jahnsite-(CaMnMn).
Field Collected: Clayton Ford, 1960's. Acquired by Gordon Jackson 9/22/03. Gifted to T. Mortimer 3/19/16.
Catalog No.: u1956
Notes: Pale yellow jahnsite-(CaMnMn) with lavender strengite ball and stubby black prisms of rockbridgeite
A polished grain EDS analysis (BC82) indicated a Mn > Fe, Ca, phosphate with a Mn:Fe:Ca:P ratio of about 2.5:1.8:1.1:4    An XRD analysis was attempted on this mineral, but the sample was to small to produce a useful result.
Additional EDS analyses (BC383, A) gave chemistries of (normalized for 4 P):
Ca0.88Mn1.7Fe1.09Al0.44P4F0.49O50
Ca0.84Mn1.73Fe1.04Al0.39P4F0.73O50
Jahnsite-(CaMnMn), {Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)28H2O comes closest to this chemistry.
I have struggled to get a satisfactory identification for this specimen. The aluminum and fluorine observed in the analyses are a bit bothersome. Several mindat.org photos of jahnsite-(CaMnMn) compare favorably with this Fletcher specimen.
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LAUEITE  Fletcher Mine, Groton, NH
3 mm field of view
Species:           LAUEITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 3 mm field of view
Field Collected: Clayton Ford
Catalog No.: u1951
Notes:
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LAUEITE  Fletcher Mine, Groton, NH
1.5 mm field of view
Species:           LAUEITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.5 mm field of view
Field Collected: ex Fred Devito collection
Catalog No.: A Doug Rambo specimen (# 1303 on box bottom)
Notes: The laueite crystals in this Fletcher lot tended to be short prisms. Many specimens with laueite also had stewartite.
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LAUEITE  Fletcher Mine, Groton, NH
1.5 mm field of view
Species:           LAUEITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.5 mm field of view
Field Collected:
Catalog No.: A Bob Wilken specimen & photo
Notes: [bw] Photo taken w. a Nikon Plan 10X; a stack of 57 w. 12 um increments.
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LAUEITE  Fletcher Mine, Groton, NH
1.5 mm field of view
Species:           LAUEITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.5 mm field of view
Field Collected: Brownie Thompson ? and acquired via Pat Barker.
Catalog No.: A Bob Wilken specimen & photo
Notes:
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LEUCOPHOSPHITE    Fletcher Mine, N. Groton, NH
2 mm field of view. Honey-colored leucophosphite rhombic tablets with powdery white coating, (particularly the background crystals)
Species:           LEUCOPHOSPHITE  
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 2 mm field of view. Honey-colored leucophosphite rhombic tablets with powdery white coating.
Field Collected: Bob Whitmore - 1971
Catalog No.: A Bob Whitmore specimen (at time of photo)
Notes: Identification per Bob Whitmore specimen label.
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LEUCOPHOSPHITE    Fletcher Mine, N. Groton, NH
1.4 mm field of view.
Species:           LEUCOPHOSPHITE
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 1.4 mm field of view.
Field Collected: Forrest Fogg
Catalog No.: A Bob Wilken specimen & photo.
Notes: Rough material col. by Forest Fogg in the 1960's. Acq from Gordon Jackson in 2016.
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MESSELITE    Fletcher Mine, N. Groton, NH
2.3 mm field of view.
Species:           MESSELITE
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 2.3 mm field of view.
Field Collected: Forrest Fogg
Catalog No.: A Bob Wilken specimen & photo.
Notes: Rough material col. by Forest Fogg in the 1960's. Acq from Gordon Jackson in 2016.
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MITRIDATITE  Fletcher Mine, Groton, NH
13 mm field of view
Species:           MITRIDATITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 13 mm field of view
Field Collected: Dana Jewell
Catalog No.: u2592
Notes: Earthy green mitridatite.
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MUSCOVITE  Fletcher Mine, Groton, NH
3.4 mm field of view
Species:           MUSCOVITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 3.4 mm field of view
Field Collected: Rough material col. by Forest Fogg in the 1960's. Acq from Gordon Jackson in 2016.
Catalog No.: A Bob Wilken specimen & photo
Notes: Specimen labeled Mica - muscovite assumed.
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PARAVAUXITE  Fletcher Mine, Groton, NH
1.7 mm Paravauxite crystal
Species:           PARAVAUXITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.7 mm Paravauxite crystal
Field Collected: Gift from Bob Janules
Catalog No.: u492
Notes:
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PHOSPHOSIDERITE with Laueite  Fletcher Mine, Groton, NH
3.5 mm field of view
Species:           PHOSPHOSIDERITE with Laueite
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:
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PHOSPHOSIDERITE  Fletcher Mine, Groton, NH
1.8 mm field of view
Species:           PHOSPHOSIDERITE
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:
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PHOSPHOSIDERITE  Fletcher Mine, Groton, NH
3.5 mm field of view
Species:           PHOSPHOSIDERITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 3.5 mm field of view
Field Collected: Forrest Fogg
Catalog No.: A Bob Wilken specimen & photo
Notes: Rough material col. by Forest Fogg in the 1960's. Acquired from Gordon Jackson in 2016.
[bw] Based on the very irregular fluted crystal forms I believe this is phosphosiderite. I must admit I see nothing but shades of pink phosphosiderite on Mindat although "moss green" is listed for color. Some of the Palermo phosphosiderite trended toward green but certainly not this dark. It's a tiny piece of about 1/8" around so there wasn't much to work with.
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PYRITE  Fletcher Mine, Groton, NH
8 mm field of view
Species:           PYRITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 8 mm field of view
Field Collected: Clayton Ford
Catalog No.: u1952
Notes: From small box of samples gifted by Gordon Jackson. Some oxide coated milky prisms (apatite?)are present on these pyrite cubes.
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ROCKBRIDGEITE  Fletcher Mine, Groton, NH
10 mm field of view
Species:           ROCKBRIDGEITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 10 mm field of view
Field Collected: Clayton Ford
Catalog No.: u1948
Notes: Embedded rockbridgeite fans.
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SCORODITE  Fletcher Mine, Groton, NH
1.4 mm field of view


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SCORODITE  Fletcher Mine, Groton, NH
0.9 mm field of view
Species:           SCORODITE ?
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.4 mm field of view and closer 0.9 mm field of view
Field Collected:
Catalog No.: A Bob Wilken specimen & photo
Notes: [bw] Looking at the scorodite photo I was inclined to declare this pharmacosiderite because... generally... they look more cubic than anything with sculpted-out edges in most cases. But, then I noticed a mass of flattened xls (the closeup) that have a peak which would be more in line with scorodite. In the upper right corner of this photo there is a composite crystal form that resembles the general shape of a typical scorodite. Anyway, it should be tested.
Top photo taken w. a Nikon Plan 10X objective; a stack of 104 w. 6 um increments.
[tm] Scorodite, an arsenic mineral, is very rare in NH.
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SIDERITE  Fletcher Mine, Groton, NH
2.4 mm long composite siderite crystal mass
Species:           SIDERITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 2.4 mm long composite siderite crystal mass
Field Collected: Ingeborg Burgraff Jewell in the early 1980's.
Catalog No.: A Bob Wilken specimen & photo
Notes:
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STEWARTITE  Fletcher Mine, Groton, NH
0.9 mm field of view
Species:           STEWARTITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 0.9 mm field of view
Field Collected: ex Fred Devito collection
Catalog No.: A Doug Rambo specimen (# 1282 on box bottom)
Notes:
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STEWARTITE    Fletcher Mine, N. Groton, NH
0.8 mm fov.
Species:           STEWARTITE  
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 0.8 mm fov
Field Collected: Clayton Ford. ex. Gordon Jackson
Catalog No.: e.g. u1954
Notes: Not a particularly good photo. Voucher specimen for stewartite at the Fletcher Mine.
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STRENGITE    Fletcher Mine, N. Groton, NH
1.2 mm field of view


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STRENGITE   Fletcher Mine, Groton, NH
1.1 mm field of view
Species:           STRENGITE  
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 1.2 mm field of view, top photo
Field Collected: Clayton Ford ?
Catalog No.: u959
Notes: Gift from Gordon Jackson. Matt Butler examined some small grains from this specimen with a polarizing microscope and reported: "looking at the pink crushed grains I see interference colors but no noticeable pleochroism so maybe strengite."
A second photo Jan., 2022.
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STRENGITE    Fletcher Mine, N. Groton, NH
2.8 mm field of view
Species:           STRENGITE  
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 2.8 mm field of view
Field Collected: Inge Jewel
Catalog No.: A Bob Wilken collection specimen
Notes: Bob Wilken identification.
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STRENGITE    Fletcher Mine, N. Groton, NH
2.0 mm field of view
Species:           STRENGITE  
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 2.0 mm field of view
Field Collected: Clayton Ford. A gift from Gordon Jackson
Catalog No.: u957
Notes:
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STRENGITE    Fletcher Mine, N. Groton, NH
1.0 mm strengite spheres
Species:           STRENGITE  
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 1.0 mm strengite spheres
Field Collected: Rough material col. by Forest Fogg in the 1960's. Acq from Gordon Jackson in 2016.
Catalog No.: A Bob Wilken specimen & photo
Notes: [bw] Photo taken w. an EP0 objective; a stack of 75 w. 22 um increments
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STRENGITE    Fletcher Mine, N. Groton, NH
0.35 mm strengite crystal
Species:           STRENGITE  
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 0.35 mm strengite crystal
Field Collected: Rough material col. by Forest Fogg in the 1960's. Acq from Gordon Jackson in 2016.
Catalog No.: A Bob Wilken specimen & photo
Notes:
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STRENGITE    Fletcher Mine, N. Groton, NH
1.3 mm field of view
Species:           STRENGITE  
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 1.3 mm field of view
Field Collected: Rough material col. by Forest Fogg in the 1960's. Acq from Gordon Jackson in 2016.
Catalog No.: A Bob Wilken specimen & photo
Notes: [bw] Secondary (?) white strengite on a base of pink crystalline strengite.
Photo taken w. a Nikon Plan 10 X; a stack of 98 w. 14 um increments.
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STRENGITE    Fletcher Mine, N. Groton, NH
0.3 mm strengite crystal


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STRENGITE    Fletcher Mine, N. Groton, NH
2.2 mm field of view
Species:           STRENGITE  
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 0.3 mm strengite crystal, top photo.
Field Collected: Clayton Ford. A gift from Gordon Jackson
Catalog No.: u957
Notes: Crystals are in a small vug in rockbridgeite.
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STRUNZITE   Fletcher Mine, N. Groton, NH
3.6 mm field of view.

Species:           STRUNZITE
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 3.6 mm field of view.
Field Collected:
Catalog No.: A Bob Wilken specimen & photo
Notes: [bw] Photo taken w. an EP0 objective; a stack of 85 w. 44 um increments.
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STRUNZITE   Fletcher Mine, N. Groton, NH
3.3 mm field of view.

Species:           STRUNZITE
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 3.3 mm field of view.
Field Collected: Brownie Thompson ?
Catalog No.: A Bob Wilken specimen & photo
Notes: A Brownie Thompson specimen acquired from Pat Barker.
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TAVORITE   Fletcher Mine, N. Groton, NH
7 mm field of view. Pale green tavorite in rockbridgeite.

Species:           TAVORITE
Locality:          Fletcher Mine, N. Groton, NH
Specimen Size: 7 mm field of view. Pale green tavorite in rockbridgeite.
Field Collected: Clayton Ford acquired by Gordon Jackson 9/22/03, gifted to Tom Mortimer 2016.
Catalog No.: u2032
Notes: A non-stacked photo. An EDS analysis was consistent with a tavorite identification. Tavorite chemistry is LiFe(PO4)(OH). EDS cannot detect lithium.
Color, fine-grain appearance, and rockbridgeite association are also appropriate for Groton, NH occurrences of tavorite.
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TAVORITE  Fletcher Mine, Groton, NH
2 cm view
Species:           TAVORITE
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 2 cm view
Field Collected: ex Fred Devito collection
Catalog No.: A Doug Rambo specimen (# 2428 on box bottom)
Notes: Green tavorite embedded in rockbridgeite. Not a lot to see here.
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TORBERNITE  Fletcher Mine, Groton, NH
3.3 mm field of view
Species:           TORBERNITE in Muscovite
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 3.3 mm field of view
Field Collected: ex. Pat Barker specimen
Catalog No.: A Bob Wilken specimen & photo
Notes:
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WHITEITE ?  Fletcher Mine, Groton, NH
2 cm view
Species:           WHITEITE ?
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.6 mm field of view
Field Collected: Brownie Thompson and acquired from Pat Barker.
Catalog No.: A Bob Wilken specimen & photo.
Notes: [bw] This "whiteite" may indeed be just a Jahnsite. It's never been tested. It's the tabular form that I tend to associate with whiteite.
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WHITLOCKITE  Fletcher Mine, Groton, NH
2.1 mm field of view
Species:           WHITLOCKITE
Locality:         Fletcher Mine, Groton, NH (per label with gifted specimen)
Specimen Size: 2.1 mm field of view
Field Collected: Clayton Ford. A gift from Gordon Jackson
Catalog No.: u1975
Notes: Another whitlockite group on specimen u1975.
During a May, 2022 discussion on these Fletcher Mine whitlockite specimens with Jim Nizamoff, he expressed some reservations about attributing these specimens to the Fletcher Mine. He was not aware of a whitlockite occurrence at Fletcher and opined that the pegmatite chemistry of Fletcher did not well match that needed for whitlockite formation. Jim felt the possibility that these specimens were comingled with Palermo specimens was a strong possibility.
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WHITLOCKITE  Fletcher Mine, Groton, NH
1.4 mm crystal
Species:           WHITLOCKITE
Locality:         Fletcher Mine (?), Groton, NH
Specimen Size: 1.4 mm crystal
Field Collected: Clayton Ford. A gift from Gordon Jackson
Catalog No.: u1975
Notes: Chemistry computed from EDS analysis is Ca7.55(Na0.74Mg0.71)P7.0O37 normalized for 7 P. For whitlockite chemistry, Ca9Mg(PO3OH)(PO4)6 . The chemistry of this specimen suggests moderate substitution by Na for Ca and/or Mg.
See locality source caution with above photo.
Highslide JS
WHITMOREITE ? with Stewartite   Fletcher Mine, Groton, NH
1.0 mm field of view
Species:           WHITMOREITE ? with Stewartite & Strunzite
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 1.0 mm field of view
Field Collected:
Catalog No.: u1975
Notes: [bw] "I'm not sure you (tm) want to accept this as whitmoreite. Unfortunately the little hemispheres are so small and somewhat submerged in strunzite. The more prominent xl masses I have labeled as stewartite. I don't think paravauxite usually shows any color. If you get up real close to the little brown ball to the left you can see acicular terminations...tiny as they are.
Photo taken with a Nikon Plan 10X; a stack of 99 with 5 um increments."
Highslide JS
UNKNOWN  Fletcher Mine, Groton, NH
0.9 mm field of view


Highslide JS
UNKNOWN  Fletcher Mine, Groton, NH
0.4 mm field of view
Species:           UNKNOWN
Locality:         Fletcher Mine, Groton, NH
Specimen Size: 0.9 mm field of view and 0.4 mm field of view
Field Collected: Clayton Ford
Catalog No.: u1949
Notes: From small box of samples gifted by Gordon Jackson.