Specimen NumberCRC-1227CommentsFine-grained massive sulfide composed of rammelsbergite, domeykite, and nickeline, confirmed by XRD (see pattern). In collection under CRC-1228 rammelsbergite.In Teaching CollectionNoMineral(s)domeykiteRock NameCrowe reference collectionDistrictKeweenawMineMohawkExternal LinkMindatDeposit TypeKeweenaw CopperReference MaterialACL-143: White, W.S., 1966, Tectonics of the Keeweenaw Basin, Western Lake Superior Region; U.S. Geol. Surv. Prof. Paper 524-E, Washington, D.C., 22 p.CitationAnalytical work financially supported by the UGA Department of Geology. Mr. Christopher J. Fleisher is acknowledged for providing technological support for EDS analyses.