Seberged Island, Egypt :
BANCROFT, P. (1984) : Peridot, in "Gem & Crystal Treasures" : Expedition to Seberged available online at PalaGems
America :
Capillitas mine, Argentina :
ZAVALIA, M.F.M. (1997 ?)
: Mina Capillitas, un depósito epitermal del Noroeste Argentino in : Ianglia, (1997 ?) pp. 249 - 254
Carlsbad mine, New Mexico :
MINETTE, JAMES W. (1999)
: Great Pockets : The Carlsbad Halite Caves; in : Mineralogical Record, Vol. 30; September - October 1999, pp.369 - 372, pdf-format
Etta mine & Black Hills :
ANONYMOUS (2003)
: Departmental Field Trip Report Carleton College, Department of Geology, Fall 2003 : Field Trip into the Black Hills - unpublished, but available online
LOOMIS,Th. A. (????)
: