Specimen Number21-8-009Alternate NumberLM-115Commentsfrom Crowe research collection, L. Mitchell thesis area; geyserite or common opalIn Teaching CollectionNoMineral(s)opalField NotesspheruliticRock Namesilica sinterDistrictHartMineJumbo SouthExternal LinkMindatGeo-LocationHackberry MountainDeposit TypeEpithermal Low SulfidationGeo-Coords[1] Reference MaterialMitchell, T.L., 1996, The Stable Isotope Geochemistry and Geology of Synvolcanic Gold Mineralization in the Jumbo South Deposit, Castle Mountains, Eastern Mojave Desert, California: Indications of Magmatic Input; University of Georgia MS thesis, 182 p.
21-8-009: silica sinter - Hart District - Jumbo South Mine. Franklin College Collections, accessed 12/11/2025, https://digitalcollections.franklin.uga.edu/nodes/view/35071