New Gallery #166

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Photos recently added to NH species galleries, set #166.
AEGIRINE Hurricane Mtn., Conway, NH 2 cm vertical field of view AEGIRINE Hurricane Mtn., Conway, NH 10 mm vertical field of view	Species: AEGIRINE Locality: Hurricane Mtn., Conway, NH Specimen Size: 2 cm vertical field of view and 10 mm close-up view. Field Collected: Leroy Grant - 1970's Catalog No.: 2154 Notes: In 2022, Bob Wilken found and identified (EDS) aegirine at Hurricane Mtn. These were mostly micro green splinters in the cores of matrix embedded arfvedsonite crystals. Alerted to this association, I reviewed a small lot of Leroy Grant Hurricane specimens, (acquired 2018), that I had dismissed as typical, non-descript, embedded arfvedsonite. One miniature chunk had these aegerine crystals. These were not as green as Bob's find, perhaps due to greater weathering. Aegirine has been on New Hampshire species lists for decades, reported from Red Hill, Moultonborough, My Red Hill collecting efforts had failed to find an example, so Bob's discovery of the Hurricane Mtn. occurrence was most satisfying.
AEGIRINE Hurricane Mtn., Conway, NH 10 mm vertical field of view	Species: AEGIRINE Locality: Hurricane Mtn., Conway, NH Specimen Size: 10 mm vertical field of view Field Collected: Leroy Grant - 1970's Catalog No.: 2154 Notes: Another agirine crystal on the 2154 specimen, very dark green.
GALENA Johnson Rd. Locale, Bow, NH 11 mm field of view	Species: GALENA Locality: Johnson Rd. Locale, Bow, NH Specimen Size: 11 mm field of view Field Collected: Paul Young - 9/5/16 Catalog No.: u2588 Notes: Euhedral galena cubic crystal coated with micro cerussite crystals in quartz crystal vug. Cerussite crystal spray at bottom. Euhedral galena crystals are rare at the Johnson Rd. locale. From a stack of 120 images with Canon MPE-65 lens.
ARSENIOSIDERITE Turner Mine, Marlow, NH 1.5 mm broken crystal.	Species: ARSENIOSIDERITE Locality: Turner Mine, Marlow, NH Specimen Size: 1.5 mm broken crystal. Field Collected: Bob Wilken - 11/20/20 Catalog No.: u2603 Notes: [bw] The blocky arseniosiderite was what I originally thought would be lollingite or arsenopyrite. I think you [tm] mentioned at some point Nizamoff thought it could be the walentaite. I've attached the two EDS probe results. I can see why he might have said that due to the presence of both As and P. However, there is no Mn. It seems the formula has gone through some revision..... Chemical formula revised from H₂Ca₂Fe³⁺₆(AsO₄)₅(PO₄)₃·14H₂O to Fe³⁺(Ca,Mn²⁺,Fe²⁺,Na,[ ])(As³⁺₃O₆)(PO₄)₂(O,OH)(H₂O)₅: Grey I E, Mumme W G, Hochleitner R (2019) Trimeric As³⁺3O₆ clusters in walentaite: crystal structure and revised formula. European Journal of Mineralogy 31, 111-116, chemical formula changed from Fe³⁺₃(Ca,Mn²⁺,Fe²⁺,Na,[ ])(As²⁺₃O₆)(PO₄)₂(O,OH)(H₂O)₅ to [Mn(H₂O)₆][[ ]As³⁺₃Fe⁺₃(PO₄)₂O₇]. The odd element out in the EDS result is S. It's in neither arseniosiderite or walentaite. Not sure what to make of that. I wonder if these are a pseudomorph of arsenopyrite having altered to arseniosiderite Ca₂Fe³⁺₃(AsO₄)₃O₂ · 3H₂O with some remaining S. Anyway, given the imperfections of mineral analysis, of the options, arseniosiderite was the best one. Barahonaite- Fe, Kolfanite, Lazarenkoite, Sewardite, Yukonite and Wllkildellite-Fe were the remaining choices if P and S were eliminated from the search. For this P would simply be a sub for As. I think it's the S that's at issue.
ARSENIOSIDERITE Turner Mine, Marlow, NH 1.2 mm crystal ARSENIOSIDERITE Turner Mine, Marlow, NH 1.2 mm crystal	Species: ARSENIOSIDERITE Locality: Turner Mine, Marlow, NH Specimen Size: 1.2 mm crystal Field Collected: Bob Wilken Catalog No.: A Bob Wilken specimen and photos Notes: EDS analyses and EDS analyses indicated arseniosiderite. [bw] This is the one Nizamoff said could be walentaite. The issue ... is the question regarding how much As vs P is enough to tip the balance in favor of walentaite. Nizamoff said for .... walentaite P is commonly present in lesser amounts than As
CRANDALLITE Palermo Mine, Groton, NH Field of view about 1 mm	Species: CRANDALLITE Locality: Palermo Mine, Groton, NH Specimen Size: Field of view about 1 mm Field Collected: Forrest Fogg Catalog No.: u2604 Notes: Forrest labeled these hairs as crandallite.
JAHNSITE Group Palermo Mine Groton, NH 0.9 mm field of view	Species: JAHNSITE Group Locality: Palermo Mine Groton, NH Specimen Size: 0.9 mm field of view Field Collected: Unknown Catalog No.: Notes: Label says collected in 1973.
JAHNSITE Group Palermo Mine Groton, NH 0.6 mm field of view JAHNSITE Group Palermo Mine Groton, NH 0.8 mm field of view	Species: JAHNSITE Group Locality: Palermo Mine Groton, NH Specimen Size: Two views. 0.6 mm field of view, top photo Field Collected: Unknown Catalog No.: u2589 Notes:
SMITHSONITE Madison Lead Mine, Madison, NH 7 mm field of view	Species: SMITHSONITE Locality: Madison Lead Mine, Madison, NH Specimen Size: 7 mm field of view Field Collected: Art Smith - July 2000 Catalog No.: u2605 Notes: Art Smith catalog # 7794mm. The smithsonite fluoresces bright red in SW UV. Underlying matrix is sphalerite. Galena is also present. Purchased from Jim Daily, $4.00, Baltimore Symposium, October, 2022.
BARITE Pierce Mine, Chesterfield, NH 6.5 cm specimen with 8 mm barite crystal BARITE Pierce Mine, Chesterfield, NH 8 mm barite crystal	Species: BARITE Locality: Pierce Mine, Chesterfield, NH Specimen Size: 6.5 cm specimen with 8 mm barite crystal Field Collected: Clayton Ford Catalog No.: Don Dallaire specimen and photos Notes: Don acquired this specimen in 1984.