Locality: Palermo #1 Mine, N. Groton, NH
Specimen Size: 0.6 mm field of view
Field Collected: From a tub of Palermo phosphate rocks gifted by Bob Whitmore
Catalog No.: u2399
Notes:
Locality: Palermo #1 Mine, N. Groton, NH
Specimen Size: 1.1 mm field of view and 0.6 mm zom view.
Field Collected: From a tub of Palermo phosphate rocks gifted by Bob Whitmore
Catalog No.: u2395
Notes: This Palermo cacoxenite compares very favorably with many cacoxenite photos on mindat.org.
Locality: Palermo #1 Mine, N. Groton, NH
Specimen Size: 2.6 mm field of view
Field Collected: From a tub of Palermo phosphate rocks gifted by Bob Whitmore
Catalog No.: u2407
Notes:
Locality: Palermo #1 Mine, N. Groton, NH
Specimen Size: 0.5 mm field of view
Field Collected: From a tub of Palermo phosphate rocks gifted by Bob Whitmore
Catalog No.: u2407
Notes:
Locality: Palermo #1 Mine, N. Groton, NH
Specimen Size: 0.7 mm field of view
Field Collected: From a tub of Palermo phosphate rocks gifted by Bob Whitmore
Catalog No.: u2402
Notes: The pre-breakdown specimen that hosted these cacoxenites had a moderate amount of chalcopyrite. Some of the chalcopyrite was altered to this blue-black mineral here, (perhaps bornite). Cacoxenite is rare at Palermo. I wonder if the chalcopyrite enables the favorability of cacoxenite formation.
Locality: Palermo Mine, N. Groton, NH
Specimen Size: 3 mm field of view
Field Collected: Bob Whitmore 1975
Catalog No.: A Bob Whitmore specimen
Notes: Identification by Bob Whitmore. Cacoxenite is rare at Palermo. Oxidized beraunite may be confused with cacoxenite. Aluminum is an essential element for cacoxenite. Aluminum is not present in beraunite.
Locality: Palermo Mine, N. Groton, NH
Specimen Size: 0.2 mm cacoxenite ? balls
Field Collected: From a tub of Palermo phosphate rocks gifted by Bob Whitmore
Catalog No.: u1887
Notes: From a rock chunk with an intimate combination of beryl and graftonite. In some zones of the specimen, the graftonite has pretty much dissolved out, leaving behind beryl stringers and cavities for some secondary phosphates, including rockbridgeite, strunzite, minor laueite, and what may be cacoxenite. Cacoxenite is really rare stuff at Palermo... the 16 page Palermo article in the 1981 R&M issue states "only verified in one specimen" ... and (at the time) "only second occurrence in a pegmatite". Also interesting... the formula for cacoxenite in the R&M article does not include aluminum, but the mindat formula now does... as one part Al to 24 parts Fe .... VERY miniscule! Anyway, one small vug in the subject specimen has several yellow tufty balls that could pass for cacoxenite, (shown here). What tilts the ID in favor of cacoxenite is the association with beryl, an aluminum containing silicate ... that may have contributed to the secondary chemistry.
Locality: Palermo Mine, N. Groton, NH
Specimen Size: 1.5 mm field of view.
Field Collected: Bob Whitmore - from a tub of Palermo phosphate rocks gifted by Bob.
Catalog No.: u2440
Notes: