Specimen Number22-5-012Alternate NumberRoc-3CommentsThree small pieces, two that are quartz + calcite + epidote, and one that is dense, and has abundant epidote + malachite + chalconatronite secondary phases coating most of sample.In Teaching CollectionNoMineral(s)calcitecopperepidotequartzRock NameCu oreDistrictKeweenawMineRocklandExternal LinkMindatDeposit TypeKeweenaw CopperGeo-Coords[1] Reference 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.
22-5-012: Cu ore - Michigan District - Rockland Mine. Franklin College Collections, accessed 14/06/2026, https://digitalcollections.franklin.uga.edu/nodes/view/38000