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| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 312
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| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 106, 160, 312
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| www.koeln.netsurf.de/~w.steffens/usa.htm. |
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| Canadian Mineralogist 34:221-240 |
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| USGS Prof Paper 649 |
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| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
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| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
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| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
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| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
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| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
- White Earth Mining District (Powderhorn Mining District)
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.
Larsen, E.S. (1942) Alkalic rocks of Iron Hill, Gunnison County, Colorado. Shorter contributions to general geology, 1941-42. United States Geological Survey Professional Paper 197-A. |
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| Carnein, Carl R., Bartos, Paul J. (2005) Famous mineral localities: The Cripple Creek Mining District, Colorado, in March - April 2005. The Mineralogical Record, 36 (2) 143-185 |
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| Brearley, A. J. & Jones, R. H. (1998): Chondritic Meteorites. In: Planetary Materials (Papike, J. J., Editor): Chapter 3, 398 pages. Mineralogical Society of America: Washington, DC, USA. (1998). |
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| Fuchs, L.H. (1968) X-ray crystallographic evidence for the meteoritic occurrence of nepheline. Earth and Planetary Science Letters 5: 187-190. |
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| Joekel, R.M.
Nickeln, B.L. & Wally, K.D., 2007, “Late Paleozoic Weathering and Residual Acccumulation of Minerals on Elk Creek Carbonatites, Southeastern Nebraska, USA”, Paper No. 55-26, 2007 GSA Denver Annual Meeting (28–31 October 2007). |
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| Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico (3rd ed.) University of New Mexico Press, Albuquerque, NM. |
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| Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico (3rd ed.) University of New Mexico Press, Albuquerque, NM.
F.W. Clarke (1900) Analyses of Rocks from the Laboratory of the United States Geological Survey 1880-1899 (United States Geological Survey Bulletin 168) |
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| Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico (3rd ed.) University of New Mexico Press, Albuquerque, NM. |
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| Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico (3rd ed.) University of New Mexico Press, Albuquerque, NM. |
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| Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico (3rd ed.) University of New Mexico Press, Albuquerque, NM. |
- Point of Rocks Mesa (Pecks Mesa)
| 4th Annual New Mexico Mineral Symposium (1985) New Mexico Geology 7:18-19
Rocks & Min.:60:229. |
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| Scott, G. R., Wilcox, R. E., & Mehnert, H. H. (1990). Geology of volcanic and subvolcanic rocks of the Raton-Springer area, Colfax and Union Counties, New Mexico. United States Geological Survey, Professional Paper
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| Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico (3rd ed.) University of New Mexico Press, Albuquerque, NM. |
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| Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico (3rd ed.) University of New Mexico Press, Albuquerque, NM. |
- La Bajada Mining District
| Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico (3rd ed.) University of New Mexico Press, Albuquerque, NM. |
Point of Rocks Quarry, Point of Rocks Mesa, Springer, Colfax County, New Mexico, USA