Calcite from selected localities.
||Page, L. R.; Stocking, H. E.; Smith, H. B. (1956) Contributions to the geology of uranium and thorium by the United States Geological Survey and Atomic Energy Commission for the United Nations International Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, 1955. USGS Professional Paper 300 pp303-319.|
|USGS Prof Paper 68 The Ore Deposits of New Mexico|
|NMBMMR Memoir 38 Geology and Technology of the Grants Uranium Region 1979; USGS Open-File Report 79-1510|
||Personally collected by Erin Delventhal - found in septarian nodules, IDed by crystal habit|