Locality: Palermo Mine, N. Groton, NH
Specimen Size: 4 mm barrel-shaped, pinecone crystal cluster
Field Collected: Forrest Fogg -1973
Catalog No.: u1561
Notes: A polished grain EDS analysis , (BC09), from an adjacent broken crystal group suggested childrenite. An APFU calculated from this analysis yields (Fe0.50,Mn0.21,Ca0.13)Al1.0P1.14O3.05 . Dana's System of Mineralogy states "small amounts of Ca and Mg [may] substitute for (Fe,Mn) in some analyses."
The large spectral peak at the lowest end of the spectrum is due to the carbon coating.
I have not previously seen the pinecone shape and pale-blue coloration in childrenite.
Locality: Chickering Mine, Walpole, NH
Specimen Size: 3 mm cluster of oxide coated childrenite crystals.
Field Collected: Tom Mortimer
Catalog No.: u1724
Notes: Photo from stack of 18 images, 0.05 mm steps, processed with Helicon Focus.
At the Chickering Mine, when childrenite is found in weathered siderite vugs, it is frequently coated with an orange oxide.
Locality: Palermo Mine, N. Groton, NH
Specimen Size: 2.5 mm field of view
Field Collected: From a tub of Palermo phosphate rocks gifted by Bob Whitmore
Catalog No.: u1912
Notes: Substrate matrix is vivianite. Structure of these sprays resembles Bob Whitmore's gatumbaite specimen, but radial sprays on reverse side are clearly childrenite. Phosphoferrite or reddingite is also present on this specimen.
Locality: Palermo Mine, N. Groton, NH
Specimen Size: 2 mm childrenite crystal in siderite vug
Field Collected: From a tub of Palermo phosphate rocks gifted by Bob Whitmore
Catalog No.: u1888
Notes:
Locality: Rice Mine, N. Groton, NH
Specimen Size: 4.75 mm childrenite fan
Field Collected: Clayton Ford ±1970
Catalog No.: A Bob Wilken specimen and photo
Notes A breakage on a cleaved piece. Voucher specimen for childrenite at the Rice Mine.
Locality: Palermo Mine, N. Groton, NH
Specimen Size: 0.8 mm field of view. Matrix is honey-colored siderite crystals.
Field Collected: Bob Whitmore - from a tub of Palermo phosphate rocks gifted by Bob.
Catalog No.: TBC
Notes: My initial ID for these feathery crystal sprays was whiteite group, by similarite to Palermo 2 examples. Jim Nizamoff opined childrenite-eosphorite. He is usually correct!
Locality: Palermo Mine, N. Groton, NH
Specimen Size: 0.8 mm field of view. Matrix is honey-colored siderite crystals.
Field Collected: Bob Whitmore - from a tub of Palermo phosphate rocks gifted by Bob.
Catalog No.: u2434
Notes: Another feathery childrenite spray.
Locality: Palermo Mine, N. Groton, NH
Specimen Size: 0.8 mm field of view. Matrix is honey-colored siderite crystals.
Field Collected: Bob Whitmore - from a tub of Palermo phosphate rocks gifted by Bob.
Catalog No.: u2423
Notes: Another feathery childrenite spray.
Locality: Palermo Mine, N. Groton, NH
Specimen Size: 3.2 mm field of view.
Field Collected: Bob Whitmore - from a tub of Palermo phosphate rocks gifted by Bob.
Catalog No.: u2453
Notes: Many crystals in this spray are quite acicular. The consensus of opinions is that this is childrenite. Matrix is black siderite rhombs. From a stack of 117 images, B&L 4 x objective.