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.
Locality: Palermo Mine, N. Groton, NH
Specimen Size: 0.1 mm field of view. VERY TINY !
Field Collected: Unknown
Catalog No.: A Ray Meyers collection specimen.
Notes: Ray Meyers purchased this as cyrilovite. Cyrilovite chemistry is NaFe+33(PO4)2 · 2H2O . Matrix is rockbridgeite-frondelite.
Dana's New Mineralogy, the Gaines, Skinner, Foord, et. al. eighth edition, 42.7.8.1, notes cyrilovite "Found at Palermo No. 1 mine, North Groton, NH."
Mindat.org photos of cyrilovite have a very broad range of habit and color.
Al Falster, MMGM lab, provided this EDS analyses from this specimen. Al probed six different spots on the sample. Four of the six were consistent with the plot here. Negligible sodium was detected, so cannot be cyrilovite. An EDS analyses from the Boston College instrument agreed with Al Falster's.
The "best fit" for this mineral appears to be jahnsite-CaMnFe. The crystal habit for a jansite group mineral is reasonable.
Locality: Palermo Mine, Groton, NH
Specimen Size: 3 mm field of view
Field Collected: From a tub gifted by Bob Whitmore
Catalog No.: u2511
Notes: EDS analyses indicated an iron rich sphalerite. Dana's System of Mineralogy includes sphalerite analyses with up to 26% Fe. I looked for, but did not see any, Zn phosphates (Falsterite, Nizamoffite) on this specimen.
Locality: Palermo Mine, Groton, NH
Specimen Size: 4 mm field of view
Field Collected: A Ray Meyers purchase of a S & J Cares specimen from a MMNE auction.
Catalog No.: Possible return to Ray Meyers after 2nd Raman look
Notes: Correianevesite gave the best match from a George Adleman Raman analysis.
Correianevesite is a member of the phosphoferrite group. Correianevesite requires 2 Mn, but phosphoferrite must be Fe dominant (requiring > 1.5 Fe, such that Fe+Mn = 3.)
Phosphoferrite: (Fe,Mn)3(PO4)2·3H2O
Correianevesite: Fe,Mn2(PO4)2·3H2O
A polished grain EDS analyses supported the Cares phosphoferrite identification with Fe > Mn.
The chemistry calculated from this analysis is: (Fe1.38,Mn1.05)P2O15 normalized for 2 P.
The specimen appears to have part of a triangular face of an octahedral form.... which correianevesite and phosphoferrite both have
Locality: Joppa Hill Locale, Amherst, NH
Specimen Size: 1.3 mm field of view
Field Collected: Tom Mortimer
Catalog No.: u487
Notes: This is a re-photo of this specimen. Zoisite and clinozoisite are dimorphs, so EDS cannot differentiate these species.
George Adleman examined two Joppa Hill specimens that I sent with Raman spectroscopy. The Raman result favored the clinozoisite identification over zoisite. Two RAMAN plots are included.
Locality: Joppa Hill Locale, Amherst, NH
Specimen Size: 0.8 mm field of view
Field Collected: Tom Mortimer
Catalog No.: u485
Notes: Both crystal termination ends are visible.
Locality: Palermo Mine, Groton, NH
Specimen Size: 1.2 mm rhombic crystal
Field Collected: From tub of rocks gifted by Bob Whitmore.
Catalog No.: u2467
Notes: A visual identification. The true color is a bit more metallic bronze. To me, the growth structure on the bottom suggests marcasite. I don't think that this is a coated siderite xl.
Locality: Palermo Mine, Groton, NH
Specimen Size: 4 mm field of view
Field Collected: From tub of rocks gifted by Bob Whitmore.
Catalog No.: u2557
Notes: The small black spheres are rockbridgeite. The messelite has a film coating of pale green mitridatite.
Locality: Mineral Hill, Wakefield, NH
Specimen Size: 1.6 mm field of view
Field Collected: Tom Mortimer - Aug. 2009
Catalog No.: u951
Notes: Clear to milky pyromorphite is less common than green, tan, yellow.