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Highslide JS
Locality: Worthy Hill power line pegmatite, Goffstown, NH

 Species:           ANNITE
Locality:          Worthy Hill power line pegmatite, Goffstown, NH
Specimen Size: 7 cm specimen. Annite (black mica) totally enclosed in muscovite.
Field Collected: Tom Mortimer
Catalog No.: 887
Notes: Annite verified by EDS analysis. Al must be greater than Si for siderophyllite
Highslide JS
ANNITE   Locality: Rt. 16 construction site, Bartlett, NH

 Species:           ANNITE   (Biotite mica group)
Locality:          Rt. 16 construction site, Bartlett, NH
Specimen Size: 4 cm specimen with 1.5 cm black annite mica cleavage
Field Collected: Tom Mortimer
Catalog No.: 1696
Notes: Annite identified by EDS analysis. The author has had several NH biotite mica specimens analyzed - seeking a confirmed NH siderophyllite example. Aluminum must be greater than silicon for siderophyllite. The conventional wisdom is that most biotite mica in the Conway granite of the White Mountains is the annite species.