Specimen Number28-6-001Alternate NumberJR-97-9Commentsfrom Crowe research collection; J. Rosdeutscher MS materialsIn Teaching CollectionNoMineral(s)hematitekaolinitepyriteField Notesaltered hydrothermal brecciaRock Namealtered brecciaDistrictCripple CreekMineGrassy ValleyGeo-LocationDDH GVC-1 33.5ft.Deposit TypeDiatremeGeo-Coords[1] Reference MaterialRosdeutscher, J.A., 1999, Geology and Stable Isotope Geochemistry of the Grassy Valley Au Deposit, Cripple Creek District, Colorado: Evidence for Magmatic Fluids; University of Georgia MS thesis, 76 p.
28-6-001: altered breccia - Cripple Creek District - Grassy Valley Mine. Franklin College Collections, accessed 14/06/2026, https://digitalcollections.franklin.uga.edu/nodes/view/35893