Zircons from rare-earth zone, Gilpin County, Colorado. n. d.
Summary
Album caption: Zircons from rare-earth zone, Jasper Cuts area, showing overgrowths. Note crack in core which does not penetrate overgrowth. Gilpin County, Colorado.n.d. Published as figure 70-A in U. S. Geological Survey. Bulletin 1032-F. 1961.
Summary
Album caption: Zircons from rare-earth zone, Jasper Cuts area, showing overgrowths. Note crack in core which does not penetrate overgrowth. Gilpin County, Colorado.n.d.
Published as figure 70-A in U. S. Geological Survey. Bulletin 1032-F. 1961.
Available in the U.S. Geological Survey Denver Library Photographic Collection, Young, E. J. Collection.
Rights
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