TY - RPRT TI - Boromuscovite, a new member of the mica group, from the Little Three mine pegmatite, Ramona district, San Diego County, California AU - E.E. Foord AU - R.F. Martin AU - J. J. Fitzpatrick AU - J.E. Taggart AU - J.G. Crock PY - 1991 UR - https://pubs.usgs.gov/publication/70016456 ID - 70016456 ER -