Authors: GEFFNER Paul

Citation: Geffner Paul, The rocket mine: crystal peak area Colorado, Rocks and minerals , 70(1), 1995, pp. 46-50

Authors: GEFFNER Paul FISHER Jesse

Citation: Geffner Paul et Fisher Jesse, Recent work a the Lithia Dike Claim, Cahuilla Mountain, Riverside County, California, Rocks and minerals , 72(3), 1997, pp. 156-161

Authors: GEFFNER Paul FRAZIER Si and Ann

Citation: Geffner Paul et Frazier Si And Ann, Collector's note: Hallelujah! A 2006 crystal Dig at Petersen mountain, Washoe county, Nevada, Rocks and minerals , 82(5), 2007, pp. 415-418