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USA | |
| Hopkins, Oliver B. (1914) A Report on the Asbestos, Talc and Soapstone Deposits of Georgia. Bulletin 29. Geological Survey of Georgia |
| Ransom, J.E. (1974) Gems and Minerals of America: A Guide to Rock Collecting. Harper & Row, New York, 705 pages. |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |
| Januzzi, Ron E., Seaman, David M. (1976) Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut, USA. (Colony, 1921) (Januzzi, 1966, 1989) (Trainer, 1938). |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club Whitlock, H P (1903) List of New York Mineral localities. New York State Museum. |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |
| Genth,Frederick Augustus (1891) The Minerals Of North Carolina (1891) The minerals of North Carolina. Bulletin Vol. 74. US Geological Survey doi:10.3133/b74 |
| Genth,Frederick Augustus (1891) The Minerals Of North Carolina (1891) The minerals of North Carolina. Bulletin Vol. 74. US Geological Survey doi:10.3133/b74 |
| |
| U.S Bureau of Mines/Spatial Data from the Minerals System/Mineral Industry Location System(Mas/Mils)CD-Rom,Sep,1995 |
| (1891) The minerals of North Carolina. Bulletin Vol. 74. US Geological Survey doi:10.3133/b74 Genth,Frederick Augustus.,1891,The Minerals Of North Carolina |
| (1891) The minerals of North Carolina. Bulletin Vol. 74. US Geological Survey doi:10.3133/b74 Genth,Frederick Augustus.,1891,The Minerals Of North Carolina |
| Dana 6:1075. |
| Dana 6:515,637 & 1075. |
| Genth,F.A and Kerr,W.C,1881, Minerals and Mineral Localities of North Carolina,Geologic Survey,North Carolina |
| Genth,Frederick Augustus (1891) The Minerals Of North Carolina (1891) The minerals of North Carolina. Bulletin Vol. 74. US Geological Survey doi:10.3133/b74 |
| (1891) The minerals of North Carolina. Bulletin Vol. 74. US Geological Survey doi:10.3133/b74 Genth,Frederick Augustus.,1891,The Minerals Of North Carolina |
| (1891) The minerals of North Carolina. Bulletin Vol. 74. US Geological Survey doi:10.3133/b74 Genth,Frederick Augustus.,1891,The Minerals Of North Carolina |
| Wilson, W.F., McKenzie, B.J. (1978) Mineral Collecting Sites in North Carolina. Information Circular 24. North Carolina Division of Mineral Resources |
| Ref.: Dana 6:499, 560 & 1077. |
| Dana 6:1077. |
| (1891) The minerals of North Carolina. Bulletin Vol. 74. US Geological Survey doi:10.3133/b74 Genth,Frederick Augustus.,1891,The Minerals Of North Carolina |
| Wilson, W.F., McKenzie, B.J. (1978) Mineral Collecting Sites in North Carolina. Information Circular 24. North Carolina Division of Mineral Resources |
| (1891) The minerals of North Carolina. Bulletin Vol. 74. US Geological Survey doi:10.3133/b74 Genth,Frederick Augustus.,1891,The Minerals Of North Carolina |
| U.S Bureau of Mines/Spatial Data from the Minerals System/Mineral Industry Location System(Mas/Mils)CD-Rom,Sep,1995 |
| Genth,F.A (1891) The Minerals Of North Carolina: USGS Bulletion No.74 |
| Genth,Frederick Augustus (1891) The Minerals Of North Carolina (1891) The minerals of North Carolina. Bulletin Vol. 74. US Geological Survey doi:10.3133/b74 |
| (1891) The minerals of North Carolina. Bulletin Vol. 74. US Geological Survey doi:10.3133/b74 Genth,Frederick Augustus.,1891,The Minerals Of North Carolina |
| Genth,F.A and Kerr.W.C,1881,Mineral and Mineral Localities of North Carolina,Geologic Survey |
| Dana 6: 1080. |
| www.libraries.psu.edu/emsl/guides/X/delaware.htm. |
| Mineralogy of Pennsylvania-1922 Samuel S. Gordon, pg. 204 |
| Gems and Minerals of America-Jay Ellis Ransom-1974 |
| Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA. |
| Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA. |
| Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA. |
| Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA. |
| Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA. |