|
USA | |
| Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania |
| Geyer, Alan R. , Smith II,Robert C., Barnes, John H. (1976), Mineral Collecting in Pennsylvania, Page 218-219 Rose, A. W. (1970) Atlas of Pennsylvania's Mineral Resources - Metal mines and occurrences in Pennsylvania. Mineral Resource Report M50-3, Pennsylvania Geological Survey. Preston E. Hotz (1950), Diamond-drill exploration of the Dillsburg magnetite deposits, York County, Pennsylvania |
| Geyer, Alan R. , Smith II,Robert C., Barnes, John H. (1976), Mineral Collecting in Pennsylvania, Page 218-219 |
| Rose, A. W. (1970) Atlas of Pennsylvania's Mineral Resources - Metal mines and occurrences in Pennsylvania. Mineral Resource Report M50-3, Pennsylvania Geological Survey. Preston E. Hotz (1950), Diamond-drill exploration of the Dillsburg magnetite deposits, York County, Pennsylvania |
| Rose, A. W. (1970) Atlas of Pennsylvania's Mineral Resources - Metal mines and occurrences in Pennsylvania. Mineral Resource Report M50-3, Pennsylvania Geological Survey. Preston E. Hotz (1950), Diamond-drill exploration of the Dillsburg magnetite deposits, York County, Pennsylvania |
| Geyer, Alan R. , Smith II,Robert C., Barnes, John H. (1976), Mineral Collecting in Pennsylvania, Page 218-219 |
| Rose, A. W. (1970) Atlas of Pennsylvania's Mineral Resources - Metal mines and occurrences in Pennsylvania. Mineral Resource Report M50-3, Pennsylvania Geological Survey. Preston E. Hotz (1950), Diamond-drill exploration of the Dillsburg magnetite deposits, York County, Pennsylvania |
| Geyer, Alan R. , Smith II,Robert C., Barnes, John H. (1976), Mineral Collecting in Pennsylvania, Page 218-219 |
| Geyer, Alan R. , Smith II,Robert C., Barnes, John H. (1976), Mineral Collecting in Pennsylvania, Page 218-219 |
| Rose, A. W. (1970) Atlas of Pennsylvania's Mineral Resources - Metal mines and occurrences in Pennsylvania. Mineral Resource Report M50-3, Pennsylvania Geological Survey. Preston E. Hotz (1950), Diamond-drill exploration of the Dillsburg magnetite deposits, York County, Pennsylvania |
| Geyer, Alan R. , Smith II,Robert C., Barnes, John H. (1976), Mineral Collecting in Pennsylvania, Page 218-219 |
| Geyer, Alan R. , Smith II,Robert C., Barnes, John H. (1976), Mineral Collecting in Pennsylvania, Page 218-219 |
| Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania |
| www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm |
| www.museums.udel.edu (n.d.) http://www.museums.udel.edu/mineral/mineral_site/displaycollection/Carbonates/Calcite/Regional/9999-0800-3925.html |
| Former Don Miller collection |
| Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania |
| Berkheiser, Jr. Samuel W. (1983), Reconnaissance Survey of Potential Carbonate Whiting Sources in Pennsylvania, Mineral Resource Report 83. |
| The Mineralogy of Pennsylvania 1966-1975 Robert C. Smith II, pgs. 23-30 |
| Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania |
| Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania |
York Building Supply quarry, York, York County, Pennsylvania, USA