22-5-010: altered basalt - Michigan District - Rockland Mine

Details

Specimen Number22-5-010Alternate NumberRoc-1CommentsHosted in Portage Lake Lava series. Sample is brecciated, with red oxidized basalt fragments in quartz + epidote matrix with occasional datolite.In Teaching CollectionNoMineral(s)datoliteepidotequartzRock Namealtered basaltDistrictKeweenawMineRocklandExternal 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.

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22-5-010: altered basalt - Michigan District - Rockland Mine

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22-5-010: altered basalt - Michigan District - Rockland Mine