Locality: Mine Ledge, Surry, NH
Specimen Size: 2.5 cm specimen with 1.2 cm zone of pale blue dickite at top.
Field Collected: Peter Cristofono - 2013
Catalog No.: 1889
Notes: Peter's 2013 find was the first reported occurrence of dickite in New Hampshire.
This is the specimen that provided samples for the EDS and XRD analyses.
The matrix is a fine-grained crystaline quartz.
Locality: Mine Ledge, Surry, NH
Specimen Size: 6 mm zone of pale blue dickite
Field Collected: Peter Cristofono - 2013
Catalog No.:
Notes:
Locality: Mine Ledge, Surry, NH
Specimen Size: 5 mm field of view. Micro-crystaline pale blue dickite in open space vug.
Field Collected: Peter Cristofono - 2013
Catalog No.:
Notes:
Locality: Mine Ledge, Surry, NH
Specimen Size: 4.5 cm specimen of pale-blue dickite in brown quartz
Field Collected: Tom Mortimer - 2014
Catalog No.: 1915
Notes:
Locality: Mine Ledge locality, Surry, NH
Specimen Size: Top photo, 5 mm field of view.
Field Collected: Tom Mortimer
Catalog No.: TBC
Notes: Pre EDS analysis, my best guess is dickite, an alternate habit of this species that has been confirmed from this locality. These tiny white balls are on a six inch, multi-pound, specimen of goethite-romanechite-hematite.
Testing... not fluorescent (perhaps very weak, very pale green LW), and not a carbonate (flicked off a ball and pushed into a muriatic drop on a slide under my scope.... no bubbles) The balls are moderately soft. My initial thought was aragonite-calcite. Perhaps some sulfate, but I have not seen any sulfides at this locality.
An EDS analyses confirmed dickite. The Al-Si ratio is the same as on a Kerry Day plot linked to my web site dickite top page.