Specimen Number36-4-002Alternate Number18709CommentsTypical phonolite breccia, small clasts in light, very fine-grained matrix, abundant disseminated chalcopyrite.In Teaching CollectionNoMineral(s)feldsparnephelinechalcopyriteRock Namemineralized brecciaDistrictCripple CreekMineCressonExternal LinkMindatGeo-Location12th level.Deposit TypeDiatremeGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience
36-4-002: mineralized breccia - Cripple Creek District - Cresson Mine. Franklin College Collections, accessed 13/11/2026, https://digitalcollections.franklin.uga.edu/nodes/view/54980